Thank you, Rob. Good afternoon, everyone, and welcome to Skyworks' first fiscal quarter 2021 conference call. With me today are Liam Griffin, our President and Chief Executive Officer and Kris Sennesael, our Chief Financial Officer.

Before we begin, I would like to remind everyone that our discussion will include statements relating to future results and expectations that are or may be considered forward-looking statements. Please refer to our earnings press release and recent SEC filings, including our Annual Report on Form 10-K for information on certain risks that could cause actual outcomes to differ materially and adversely from any forward-looking statements made today. Additionally, the results and guidance we will discuss include non-GAAP financial measures, consistent with our past practice. Please refer to our press release within the Investor Relations section of our company website for a complete reconciliation to GAAP.

With that, I'll turn the call to Liam.

Liam K. Griffin - President and Chief Executive Officer

Thanks, Mitch, and welcome, everyone. Skyworks delivered record quarterly results in the first fiscal quarter of 2021, leveraging our expansive technology reach and deep customer engagements, spanning both mobile and broad markets. We established new quarterly records for revenue, operating margin and earnings per share, demonstrating both the power of our financial model and unique opportunity to lead the global transition to more advanced wireless communications.

Now looking at the quarter in more detail. We delivered revenue of $1.51 billion, more than $455 million above the midpoint of our guidance. We posted earnings per share of $3.36, exceeding our guidance by $1.30, effectively doubling year-over-year earnings. We achieved gross margin of 51.1% and record operating margin of 41.2%. And we generate strong operating cash flow, totaling $485 million in the quarter.

As our results demonstrate, the demand for always-on connectivity is accelerating and extending into new applications, including telemedicine, high-speed video conferencing, remote learning, autonomous transport, essential services for the infrastructure markets, store-to-door delivery and touchless commerce. This is a global phenomenon, where upgrades of key technologies are increasingly critical in the face of the ongoing pandemic.

The investments we've made over the last two decades have prepared Skyworks to address these challenges. The mobile and wireless ecosystems will benefit from these dynamics, yet outsized gains will largely accrue to those companies that have invested deeply in core technology and scale. These gains are being driven by both a growing device count and an expanding content per device. In some cases, doubling or even tripling for Skyworks.

We are proud to play an instrumental role in shaping the fast-evolving landscape, collaborating with our partners and customers, leveraging key technologies from TC-SAW to high-performance BAW filtering, SOI, gallium arsenide and state-of-the-art packaging technologies. Our strong results in Q1 demonstrate our execution around these themes. Specifically in mobile, we accelerated the ramp of our Sky5 portfolio, supporting the next wave of 5G launches at Samsung, Oppo, Vivo, Xiaomi and other Tier 1s.

In IoT, we captured design wins across a diversified array of new and existing customers. Specifically, we partnered with the ASUS, delivering the world's first Wi-Fi 6E connected home router. We shipped Wi-Fi 6 solutions for access points at top network OEMs, including Cisco, NETGEAR, CenturyLink and Aruba. We captured new wins at Google for their latest Fitbit smartwatch, and we delivered low-latency cognitive audio solutions, powering wireless gaming headsets at multiple Tier 1 accounts.

In industrial, we ramped Itron's multi-standard ISM connectivity solutions for smart cities. In infrastructure, we deployed 5G amplifier and receive modules, supporting multiple European base station OEMs. And finally, in automotive, we accelerated shipments of advanced connectivity solutions, supporting the world's premier EV manufacturer. We leveraged V2X solutions with Volkswagen and Toyota for their enhanced safety systems and partnered with MediaTek for 5G reference designs, specifically targeted at automotive applications.

Moving forward, we are seeing the confluence of multiple market developments, a significant rise in device complexity, an expansion in wireless spectrum and band count, combined with the technology bar that has never been higher. These trends directly translate to increased opportunity for Skyworks with both new and existing customers. With the central technologies and scale propelling performance gains across a broad set of applications, our purpose-built solutions address all key network protocols spanning 5G, Wi-Fi, enhanced GPS and Bluetooth.

Additionally, we expect the current C band auction to be a catalyst, with new spectrum creating significant content opportunities for our Sky5 platform. While smartphones were the first to embrace 5G, the performance gains will power a broad set of use cases, extending in a billions of IoT devices. Looking ahead, we see 5G as a transformative technology, catalyzing new applications, while acting as the universal connector from the home to the car to the factory floor.

In summary, Skyworks is solidifying market leadership as connectivity meaningfully alters the way we live, work, play and educate, not just from home, but from anywhere. Our record performance clearly reflects this dynamic.

With that, I will turn the call over to Kris for a discussion of Q1 and our outlook for Q2.

Kris Sennesael - Senior Vice President and Chief Financial Officer

Thanks, Liam. Skyworks started fiscal '21 with very strong Q1 results, delivering all-time record revenue of $1.51 billion, adding more than $550 million of incremental sequential revenue and exceeding the midpoint of the guidance for Q1 by $455 million. Revenue was up 58% sequentially and up 69% year-over-year, driven by increasing adoption of our mobile solutions with all smartphone OEMs, along with record broad market revenue and customer reach.

Mobile revenue grew 80% sequentially, as well as on a year-over-year basis, largely driven by widespread content increases as 5G phones are ramping with all major smartphone brands worldwide. Broad markets' revenue grew to $326 million, establishing a new quarterly record. This reflects revenue growth of 35% over Q1 of last year, benefiting from a diverse set of use cases, supporting work, play, learn from anywhere and increasing adoption of technology such as Wi-Fi 6 and 6E, along with the continued momentum in our audio solutions business.

Gross profit in the first quarter was $771 million, resulting in a gross margin of 51.1%, up 70 basis points sequentially and up 100 basis points year-over-year. Operating expenses were $149 million, or 10% of revenue, demonstrating strong leverage in our operating model, while continuing our strategic investments in support of future growth. We generated $622 million of operating income, translating into an all-time record operating margin of 41.2%.

Other income was $1 million and our effective tax rate was 10%, resulting in net income of $560 million or a net income margin of 37.1%. Top line momentum and execution on both gross and operating margins drove record diluted earnings per share of $3.36, beating the guidance by $1.30. EPS grew 82% sequentially and doubled, when compared to Q1 of last year.

Turning to the balance sheet and cash flow. First fiscal quarter cash flow from operations was $485 million. Capital expenditures were $119 million. We paid $83 million in dividends, and we spent $196 million to repurchase 1.4 million shares of our common stock at an average price of approximately $139 per share.

Additionally, as noted in our separate press release issued today, Skyworks' Board of Directors has authorized a new $2 billion stock repurchase program. This new buyback plan reflects our Board's confidence in Skyworks' business model and in management's ability to consistently produce strong free cash flow, allowing us to leverage share repurchases and dividends to generate higher stockholder returns.

Now let's move on to our outlook for Q2 of fiscal 2021. We expect a continued and rapid adoption of multiple wireless protocols and expanding use cases to drive strong year-over-year growth for Skyworks. Specifically, in the second fiscal quarter of 2021, we anticipate revenue to be between $1.125 billion and $1.175 billion with non-GAAP diluted earnings per share of $2.34 at the midpoint of our revenue range. This translates into year-over-year revenue growth of 50% at the midpoint of the revenue range and year-over-year non-GAAP diluted earnings per share growth of 75%.

Gross margin is projected to be in the range of 50.5% to 51%. We expect operating expenses to be between $150 million and $152 million. And below the line, we anticipate roughly $1 million in other income and a tax rate of approximately 10%. We expect our diluted share count to be approximately 166.5 million shares.

And with that, I will turn the call back over to Liam.

Liam K. Griffin - President and Chief Executive Officer

Thanks, Chris. Skyworks started the new fiscal year with record results, clearly demonstrating the breadth and depth of our business model from Tier 1 mobile to 1,000s of broad market customers. Importantly, the multi-year wireless transition is now underway, creating a burgeoning set of new opportunities in use cases. With deep customer engagements, underpinned by decades of technology investments and scale, Skyworks is uniquely positioned to lead.

Finally, our high levels of profitability and strong cash generation afford us the flexibility to invest and win, while generating consistent returns to our stockholders.

That concludes our prepared remarks. Operator, let's open the lines for questions.

Question & Answers

Operator

[Operator Instructions] And your first question comes from the line of Karl Ackerman from Cowen and Company. Your line is open.

Karl Ackerman - Cowen & Company - Analyst

Hey. Good afternoon, gentlemen, and thank you for letting me ask a question. I guess, with results and an outlook this strong, the elephant in the room is about sustainability, both in terms of revenue growth, but also profitability. We know that 5G handsets will increase this year. But I would really appreciate, if you could talk perhaps qualitatively of how you see that outlook for the balance of the year, as well as your view on broad markets too, given what appears to be a multitude of design ramps across your Wi-Fi 6 portfolio? Thank you.

Liam K. Griffin - President and Chief Executive Officer

Sure. Absolutely. Well, a couple of things. The 5G cycle really is just beginning and that's clear. And I think if you listen to Skyworks and what we've been saying, it's all about complexity, it's all about content gains and the culmination of those coming together with a tremendous unit launch in 5G and again, very early in 5G. The estimates for unit uptake at 5G, if you think about 2020, maybe there were 200 million, 220 million phones. Those numbers are going to be more than double going into '21 and will continue to move. You've got almost 7 billion subscribers in the planet, and the percentage that own a 5G phone are very, very low. So, there's a tremendous upside there in our core business in mobile. And also advanced by great technology execution with our team, so that's one big driver.

The second driver that's been bubbling up for a while is our broad market portfolio. We had tremendous gains in our broad market portfolio of 35% year-over-year with a broad set of customers. Names like Nokia, names like Honeywell, names like GE, Bosch, just an entirely new landscape of customers that we've been able to engage with. And then we talked a lot about usage cases here in the call. Usage cases, new applications that require connectivity whether it's Wi-Fi, whether it's Bluetooth, whether it's 5G, all of those trends are moving in the right direction for us and they are sustainable.

Karl Ackerman - Cowen & Company - Analyst

Appreciate that very much. If I could, for a follow-up, one of the baseband companies in Asia, the other day spoke about how they do not see any evidence of a build of inventory across the channel. Similarly, it's now well-known that there remains tightness across the foundry and component supply chain. My question is how are these dynamics driving your discussions on both pricing and volume commitments to your customers? Thank you.

Liam K. Griffin - President and Chief Executive Officer

Sure. Yes, great question. I think one of - and by the way, you're right about the tightness in supply and some of the challenges operationally. And I would say that the Skyworks team did an incredible job executing in the Q1 period. And I think we'll continue to see that opportunity extend into the full-year. But I will say this, we have made the unique investments in capital and scale. We have our own 10 billion unit TC-SAW factory for customized filtering. We have bulk acoustic wave in-house. We have our own assembly and test and packaging capabilities that are unique and purpose-built for this market.

So, we were able to avoid some of the real challenges in supply chain, because we've built a lot of this in-house, in our own factories. But there certainly have been some bumps on the execution side throughout the landscape, the technology landscape and the connectivity landscape. But we're starting to see that clear. And fortunately, we're able to execute through that in the December quarter.

Operator

And your next question comes from the line of Ambrish Srivastava from BMO. Your line is open.

Ambrish Srivastava - BMO Capital Markets - Analyst

Hi. Thank you, Liam and Chris. I was fooled for a second. I thought, I was reading a TI or ADI earnings release with that, kind of, operating margin. So, that's pretty solid, guys. But let me address maybe a baby elephant that's running around, at least in our minds, which is China. So, there's been a lot of talk about overbuild in China, especially in the Vox contracts and how they're trying to take share from Huawei. So maybe if you could just give us some sense quantitatively, how big was the China business and then qualitatively, just help us understand what's going on? And then I had a follow-up for Chris.

Liam K. Griffin - President and Chief Executive Officer

Sure. Well, we've been a key element, a key supplier for the Oppo, Vivo, Xiaomi ecosystem and that continues. And we had great results with those accounts this year. There's a lot of opportunity to grow their 5G base as well. And that's something that we should be looking forward to throughout the year and it's a multi-year cycle, of course. But again, one of the things that we continue to say here at Skyworks and it really rings true was our ability to get in and help these customers customizing, configure the complexity around 5G, leverage solutions like Sky5 that really integrates a tremendous amount of components and complexity and make it easy for the customer to go to market.

So, we had some strong uptake there in the China space. We continue to see that looking good. Obviously, there you have a Chinese New Year opportunity here as we get into our New Year. So, I think there's going to be some good signs of growth, but we have a good position there today and I think there's just more room to move on units as we go through the year.

Ambrish Srivastava - BMO Capital Markets - Analyst

What was the growth in China, Liam, Q-over-Q?

Kris Sennesael - Senior Vice President and Chief Financial Officer

So, our China business in the December quarter was up double-digit sequentially, and of course very, very strongly on a year-over-year basis. And of course, looking into March, we will have stronger than seasonal growth, double-digit growth, accelerating our year-over-year growth with those accounts.

Ambrish Srivastava - BMO Capital Markets - Analyst

Okay. And a quick follow-up for you, Chris, since you're on the line. Just remind us on the capital allocation priorities. Good to see the $2 billion buyback. But just kind of just walk us through divi, buyback and M&A and I'm assuming M&A with mostly be the [Phonetic] broad markets. Thank you.

Kris Sennesael - Senior Vice President and Chief Financial Officer

Yes, we're not changing our strategy there. We did have a $2 billion buyback program in place that had a two-year life cycle. And so that came to an end. And so we are replacing that program with a new $2 billion buyback program. And so we will continue to return most of our free cash flow back to the shareholders, combination of our dividend program and now the new $2 billion buyback program.

Ambrish Srivastava - BMO Capital Markets - Analyst

Thanks.

Operator

Your next question comes from the line of Timothy Arcuri from UBS. Your line is open.

Timothy Arcuri - UBS - Analyst

Hi. Thanks. I guess the first question is the beat was so significant and you guided just in early November. And you typically get pretty good visibility from your biggest customer. So, I guess my first question is sort of like what drove the big beat? Was it a pull in from your large customers? Can you just sort of double click on what drove the beat? And then I had a follow-up. Thanks.

Liam K. Griffin - President and Chief Executive Officer

Sure. Yes, well, it was certainly not pull in, that's for sure. I mean, it was a quarter that started a little slow and really accelerated through the period, a tremendous amount of technology execution behind this on the mobile side. But again, in broad markets, we had a record 35% year-over-year. So it's a combination of strong 5G launches with the most important customers. And within those launches, an extended reach of technology from Skyworks. The content that we're putting forth right now is significantly more advanced and more impactful than what we've had in prior years. And that comes through our own technology, fabs, our own investments in R&D and in scale to make that happen.

So, you had a very strong mobile opportunity. And then you had a broad market opportunity in parallel that was leveraging some of the core technologies. But again, things like Wi-Fi moved, GPS, Bluetooth, all the connectivity protocols and your usage cases popped up, customers that we didn't have before emerged. So, it was a culmination of multiple factors, but those factors are sustainable. I mean, those customers that we've won are going to stay with us, as we go through the next couple of quarters and years. And we look forward to more opportunity there.

Timothy Arcuri - UBS - Analyst

Okay. Got it. And then I guess, Kris, oftentimes you give us what your largest customer was in terms of revenue in the quarter. I think last December, it was in the low-60%. So, I imagine that's probably that or even higher in December. So, can you give us that number?

Kris Sennesael - Senior Vice President and Chief Financial Officer

Yes. Revenue with the largest customer in the December quarter was approximately 70% of total revenue. Obviously, it was a great quarter with that large customer that just launched their first 5G phones with very rich Skyworks' content inside. We talked about that, and we indicated that nine, 12 months ago. In addition to that, we do have some very nice and good content in some of their other products that are large customer as well. But again - so great execution there. We have a large customer.

But as Liam indicated, the strength in the December quarter was not just with the large customer, all our other customers, all our other segments, every region was up double-digit sequentially and strong double-digits on a year-over-year basis.

Liam K. Griffin - President and Chief Executive Officer

Yes. And just to follow-up with Kris, I think it is important to note that the growth with our large customer is also accelerating in their new applications. So, it is not all just about smartphones, lot of other opportunities there that require the connectivity protocols that we bring to market, which is really great.

Timothy Arcuri - UBS - Analyst

Got it. Got it. Yes, thank you.

Operator

Your next question comes from the line of Blayne Curtis from Barclays. Your line is open.

Blayne Curtis - Barclays - Analyst

Hey, guys. Thanks for taking my question and just truly amazing results. Maybe just help us a little bit with March, obviously, your large customer had very high numbers, should have some seasonality. I'm curious your outlook, maybe between mobile and broad market. Do you expect broad markets - I guess, typically, would be down, but within that outlook remarks, do you expect it to be up?

Kris Sennesael - Senior Vice President and Chief Financial Officer

Yes. No absolutely, so the guide that we provided for March has some seasonality with the large customer, as you can expect. But if you look at the revenue in mobile, outside of the large customer, as well as the revenue in broad markets, it will be up double-digits sequentially, which is actually stronger than normal seasonality, a lot stronger than normal seasonality. And it further accelerates our year-over-year revenue growth with all those accounts, all the Korean, the Chinese, as well as 1,000s of broad market customers.

Blayne Curtis - Barclays - Analyst

Got you. And then I want to ask you also, I guess, within broad markets and the mobile play as well. On Wi-Fi 6E, Samsung launch a phone with that. I'm assuming you'll see another mobile customer with that. And then, I guess at some point, you'll see access points. Can you just talk about the content driver for you, for Wi-Fi 6E?

Liam K. Griffin - President and Chief Executive Officer

Sure. Yes, I mean, we are seeing that rollout now very quickly, lot of great design wins with key customers today - now. And so, I mean, there is a technology pop there, Blayne. When you look at the Wi-Fi 6E product, there's even bulk acoustic wave opportunity within those systems. And the data rates and speed are demonstrably more powerful. You could see that in your Zoom calls or whatever. So, Wi-Fi 6E is a big driver for us as is Wi-Fi 6. And that's one of the things to think about with Skyworks, it's really about connectivity. Connectivity can be 5G. Connectivity can be Wi-Fi 6, Wi-Fi 6E, can be Bluetooth. All those protocols are there. But Wi-Fi 6 and 6E are meaningful. And they are really now the product of choice in the work at home, work from anywhere dynamic. And I think that's an opportunity for continued gains for us and with content and also with adding additional customers.

Operator

Your next question comes from the line of Kevin Cassidy from Rosenblatt. Your line is open.

Kevin Cassidy - Rosenblatt Securities - Analyst

Thanks for taking my questions. And I'll add to the congratulations on outstanding quarter.

Liam K. Griffin - President and Chief Executive Officer

Thank you.

Kevin Cassidy - Rosenblatt Securities - Analyst

For your outlook, is there any capacity constraints in your own manufacturing? Or is - you brought inventory down, is that a constrained number?

Liam K. Griffin - President and Chief Executive Officer

No, I think right now we are in good shape from a capacity point of view. In fact, I think, we've been able to broaden the aperture a little bit on execution and drive more technologies through our own fabs. So, we should be in good shape. I mean, obviously, the December quarter really tested our mettle. In terms of execution, team did very, very well. We still had to navigate some supply chain hiccups here and there that were outside of our supply chains. But for the most part, we executed very well. And we can take that momentum and the lessons learned through the December quarter to put us in better position to come through strong through the calendar year 2021.

Kevin Cassidy - Rosenblatt Securities - Analyst

Okay. Great. Thanks. And just - can you give us a timeline for the C band?? How does that move into revenue and what kind of a percentage increase would you expect those handsets with C band having?

Liam K. Griffin - President and Chief Executive Officer

Yes. No, that's a great question. So the C band auction now is pretty much commenced. And what it does, which is great, is it opens up new spectrum in mid-band. So let's call it mid-band 1 gig to 6 gig. There is a lot of opportunity there, that had been really, kind of, tied up pre-auction. That will be very beneficial for Skyworks, because we have a great portfolio of product in mid-band. We have great product in ultra-high band and high band as well. But C band is going to be unique here.

It's going to be an important piece of the 5G landscape, a very necessary piece going from low to mid to high, kind of, a layer cake approach, if you will, with low-band at the bottom, mid-band in the middle and then technologies like millimeter wave narrowly at the top. So that C band auction will drive more technology. We will be delivering 5G signal through that new spectrum, will require upgrades in our Sky5 platform that we're ready to go on and it will be able to add content.

Kevin Cassidy - Rosenblatt Securities - Analyst

Okay. Great. Thank you.

Operator

Your next question comes from the line of Chris Caso from Raymond James. Your line is open.

Chris Caso - Raymond James - Analyst

Yes. Thank you. Good evening. I guess the first question is just digging into what was different from your expectations going into the quarter again. And if I could ask the question maybe a little differently, we had talked about some supply constraints coming into the quarter. Was the nature of this be just that you were able to get more supply out the door this quarter than you had expected and otherwise when you guided back in September that perhaps more of this would have been pushed into the March quarter? But was it that either content or demand from your customers turned out to be better?

Liam K. Griffin - President and Chief Executive Officer

Yes, Chris. It really is a lot of - there is elements of each comment. So first of all, there was a - an accelerating demand signal here in the December quarter, which was great. Things were a little bit slower in the Q4 period and we've started really seeing the wheels turn in the right way in December and that accelerated. That was a - the December quarter was a quarter that accelerated. It didn't decelerated. We've had other periods where we had launches that started out great and kind of tailed off. That didn't happen. And so what it did is it put a lot of focus on execution - supply chain execution. And fortunately, if you look at, obviously, our filings, we've been spending money on capital, on capex. And that really isn't just adding lanes of new equipment, it's actually bringing new technology to the market.

So, it was a combination of supply chain execution, largely within Skyworks. And we had a couple of hiccups outside. We don't make everything in-house. But most of it's done in-house. So owning our own factories, delivering within our facilities, being efficient there, managing the constraints, but then also bringing that technology up. And we learned a lot in that period. It puts us in a much better position at the company. The lessons learned, when the intensity was high, I think really are key for us and it will make us a better company as we supply further.

But then some of the other things that Kris mentioned, this was not just the mobile launch. Mobile was great and was the highlight, but we really executed in our broad markets. And I'm really proud about that. Some of the customer names I already rattled off, but really high-quality accounts that were not customers of Skyworks a year ago. And they are today and they will be in the future.

Chris Caso - Raymond James - Analyst

Thank you. As a follow-up, with the big revenue growth, what can we speak - what can we think about margins as we go into next year? And I know that you may have been leaning on some production outsourcing, given all the supply constraints and the big ramp that happened this year. With the investments that you're making now, will that allow you to get some more margin leverage on these very large revenue numbers and start to grow the gross margin line as we go into next year?

Kris Sennesael - Senior Vice President and Chief Financial Officer

Yes, Chris. Great question. And so, first of all, I'm pleased with the fact that we delivered 51.1% gross margin, up 70 basis points sequentially, up 100 basis points year-over-year and 35 basis points above the high-end of what we guided, right? Despite the fact that, as you pointed out, it was a very tight supply chain environment. And keep in mind, we still have some COVID-19 headwinds out there as well. But as Liam indicated, great execution by the operational team, delivering more than $1.5 billion in revenue to our customers, right?

And so as we move forward and as we move, of course, to our seasonal trends here, and some of those headwinds I just talked about will abate over time. We definitely will see further gross margins improvements here. And maybe just to add there. Of course, I mean, we are focused on driving top line growth and we are focused on driving gross margins improvements all the time, but we are also focused on overall profitability and operating margins improvements. And so there as well, very pleased with the delivery of the 41.2% operating margin in the December quarter.

Chris Caso - Raymond James - Analyst

Great. Thank you.

Operator

Your next question comes from the line of Edward Snyder from Charter Equity Research. Your line is open.

Edward Snyder - Charter Equity Research - Analyst

Thank you. Excellent results, guys. Congratulations.

Liam K. Griffin - President and Chief Executive Officer

Thanks, Ed.

Edward Snyder - Charter Equity Research - Analyst

Kris, I'd like to ask, if possible. I mean, obviously, you've got a big boost from your largest customer, the results yesterday. Your comments on today's call and clearly, your revenue line show that. But in terms of sustainability, why should we expect things to actually get until be better, because if you look at your content, I mean, a big content increase on the latest model, something like by our own [Indecipherable] about 20%. But you still have a lot of runway at the Korean and Chinese customers, where you've been kind of under-earning last year. That seems to be coming back. So, can you maybe help characterize revenue growth maybe in '21? You've got a very strong run with the domestic suppliers. What should we expect for the Koreans and China? Thanks.

Liam K. Griffin - President and Chief Executive Officer

Sure. Ed, I'll take this for the first question. And if you have a follow-up, I'll throw to Kris. Yes, I mean, great question for you there. I appreciate it. And I think one of the things that you know very well is the complexity in 5G and the nuances around that technology. And really, all key elements need to come together. So, we were able to put that forward with, of course, our largest customer, but we're also gaining in China with key players, the Oppo, Vivo, Xiaomis. We've got great attachment with MediaTek as well. It's still so early. If you look at units in 5G versus where they could be in a couple of years, right, you got 6.5 billion to 7 billion mobile subscribers and we were talking about a 200 million units of 5G phones in 2020. And it will probably double in 2021. But there's still a great opportunity for us at Skyworks.

And the other thing that we do well is we are an under the hood player. We get in there with those customers and help them stitch together the necessary technologies to make it work in 5G. When you look at the Oppo, Vivo, Xiaomis, I mean, that the people support that we provide is very unique. The Sky5 platform is highly integrated and it really puts them on a fast timeline to market, which is ideal. We're also seeing our large customer perform extremely well, extremely well and taking share globally in our view. So, there's a lot of positives there and it's sustainable. 5G again, still early innings. We believe this is a multi-year thematic cycle for us and others. And then the inflection towards other markets, automotive, IoT, so many other markets that will consume these technologies. I think it just comes together for a good long-term thesis here.

Edward Snyder - Charter Equity Research - Analyst

So maybe my follow-up then kind of hits on that issue. I mean, it was only about 18 months ago, two years ago that people were fretting about Chinese OEMs or component guys replacing, replacing the US suppliers after the Huawei ban, which seemed ridiculous on its face and is clearly not the case now.

Liam K. Griffin - President and Chief Executive Officer

Right.

Edward Snyder - Charter Equity Research - Analyst

So, what I'm trying - I guess the question really is, is that the complexity we've already seen with your largest customers and is now being designed into some of the Chinese phones, require some of these more elaborate modules with all the system design, etc. That's also kind of porting into Wi-Fi 6E and almost every wireless solution in the current standard at this point. Are you seeing - is the competitive dynamic changing much at all? I mean, do you Qorvo less, to a much lesser extent of logbooks [Indecipherable], they don't play in a lot of these things. Outside of that group, are you seeing anybody else or is it reverse, content that they were providing, especially some of the quasi dispute phones is now accruing to you and the other leader?

Liam K. Griffin - President and Chief Executive Officer

Yes. Ed, it was even in the prepared remarks, we are seeing a consolidation. I mean, this stuff is - it's great technology. It's wonderful. It's amazing for the consumer. But it's really, really hard. And for those companies that have the ability to invest and scale in technology are going to win and that's not for everybody. I mean, it's not for everybody. And we're not the only game in time. I think we've done a great job of advancing in that area, in developing the technology. And we built our stuff in-house, which has been strategically advantageous for us.

But when you look at China, we provide the perfect recipe. We can scale, we can provide content, we can provide coaching and flexibility in the architectures and bring them to market in a technology that is just incredible today. So all that comes together. And as you said, the smaller players right now, it's a difficult task, it's a difficult task. The technology bar is really, really high in 5G. So, it's not a slogan, right? It's not a [Indecipherable] really, really high bar to get there. So, I think fewer and fewer companies can do it. Those that can are going to be successful and we want to be part of that.

Edward Snyder - Charter Equity Research - Analyst

Thank you.

Operator

Your next question comes from the line of Harrison Barrett from Arete Research. Your line is open.

Harrison Barrett - Arete Research - Analyst

Hi, guys. Thanks very much for taking my questions.

Liam K. Griffin - President and Chief Executive Officer

Sure.

Harrison Barrett - Arete Research - Analyst

I just wanted to ask about millimeter wave. So what steps - whether it's partnerships or investments, what steps you'd be taking towards millimeter wave capability? And from your perspective, how do you see the adoption curve changing over the next couple of years?

Liam K. Griffin - President and Chief Executive Officer

Yes. It's a great - well, certainly, it is - it has been launched. And it is available with certain carriers in certain phones. It is still a bit of a challenging technology today. There is line of sight issues, there is power consumption issues and there's cost issues. So, it is early innings for millimeter wave. In time, over time, it's possible that, that footprint could expand and millimeter wave become more pervasive in the smartphone. But I'll tell you the interesting thing though is the C band auction here opens up new spectrum that will allow immediate lanes of transmission back and forth. It just hasn't been there today. That could step up and provide another path for 5G.

So, I think millimeter wave will continue to move on. And it's a great application in certain environments, line of sight environments, campus environments, large stadiums, things like that would be perfect. But it's a bit more difficult for a broad street technology. So, it's quite possible that as we build out 5G and the advancements are made, you're going to see that layer cake, low-band, mid-band and then millimeter wave at the top for certain applications. So, I think all technologies there can play. Millimeter wave right now is probably the lowest in terms of introduction and exposure. But I think there's opportunity for it to grow and we're making investments in millimeter wave as well here at Skyworks to make sure that we're close to the action and doing what we need to do to support our customers.

Harrison Barrett - Arete Research - Analyst

Great. Thanks. And as a follow-up, how should we think about M&A at Skyworks over the next couple of years? Are you guys looking to bolster broad markets further at this stage?

Liam K. Griffin - President and Chief Executive Officer

Yes, no. Great question. First of all, we love our organic outlook. We love our business. And the markets that we play in have been incredible, they've been dynamic, they've been challenging. But they've been incredibly rewarding for us. And so what we do though is, is as we pursue opportunities and work with customers, ideas and M&A opportunities come about right naturally. So, we continue to have our eyes and ears open in that front. The opportunities do pop up. We have a tremendous cash machine at Skyworks. You've heard the data with our free cash flow margin and just the net cash that we have. So with the right opportunity comes together, we'll be ready to take advantage.

Harrison Barrett - Arete Research - Analyst

Thanks, again.

Operator

Your next question comes from the line of Tristan Gerra from Baird. Your line is open.

Tristan Gerra - Robert W. Baird - Analyst

Hi. Good afternoon. In the 3.5 gigahertz band as we see, more bands being added and some of that will come from the new C band opportunity. At which point over the next few years, you think that module moves from SAW filters to BAW filters? And how do you think you will position for ahead of that transition?

Liam K. Griffin - President and Chief Executive Officer

Yes. So if you think about the transition here as we move forward and we have great technology in TC-SAW, standard SAW and also ultra high-band, bulk acoustic wave. So, we have the ability to play along that spectrum, that frequency spectrum and capture more and more opportunities. I think where you're going to see probably the most incremental growth on the Skyworks front is on the bulk acoustic wave technology. And if you look back at our company a couple of years ago, we talked a little bit about bulk. But we were honest and we said, look, we just don't - we don't have the scale a couple of years ago.

Now, we're shipping hundreds of millions of units of bulk acoustic wave and that technology is purpose-built for mid and high-band spectrum. So that is being laid out. You're seeing it now in some of the tear downs or some of the phones that we're working with today that are on the shelves. And you will see further advancement in our bulk acoustic wave technology embedded in new phones as we go out to the next set of devices in 2021, 2022.

Tristan Gerra - Robert W. Baird - Analyst

Okay. Great. And then as a quick follow-up. How would you characterize inventory level in the smartphone supply chain, notably in China, as some of the OEM you've mentioned are basically battling for market share, taking grabs from Huawei?

Kris Sennesael - Senior Vice President and Chief Financial Officer

Yes. In fact, we are still at a record low level, both internally at Skyworks, but also in the supply chain and in the distribution channel. Keep in mind that there still have been somewhat of a demand-supply unbalance, although that is improving as we now move into the March quarter. But given all of that, the inventory in the channel is extremely low.

Tristan Gerra - Robert W. Baird - Analyst

Great. Thank you.

Operator

And our final question comes from the line of Craig Ellis from B. Riley Securities. Your line is open.

Craig Ellis - B. Riley FBR - Analyst

Yes. Thanks for taking the question, and congratulations on the tremendous revenue strength and getting gross margins - yes, getting gross margins back up to 51% first time in eight quarters. Nice to see. Liam, the question I wanted to ask and I typically wouldn't ask it this early in the year, but it really seems to be big, given the strength of the business in the December quarter and in the March quarter. As we look ahead at the calendar year, I think we typically think that, seasonally, the business would be down a few percent in the calendar second quarter just given the pause between first-half builds and second-half builds. But you did mention earlier, the doubling in 5G smartphone units and ongoing content gains. And you and Kris both touched on the secular dynamics in broad markets.

And so the question is, in part, just how are you thinking about the gives and takes as we look towards the middle of the year? And then, given the strength we're seeing to start the year, can we still expect to see the typical type of seasonality we would expect in the second half of the year? Or we just starting so robustly that for whatever reason, our linearity would be flatter?

Liam K. Griffin - President and Chief Executive Officer

Yes, yes. That's a great, great set of questions here, Craig. I think what we're seeing now is, again, great adoption right out of the gate with our 5G portfolio. We're thrilled to see that early innings. So there is a lot to do. And then in parallel, these broad market opportunities are really scaling right now. We talked a lot about Wi-Fi 6. We've got Bluetooth. We've got GPS. And we're in platforms that are just proliferating. Even with our largest customer, that the amount of revenue derived in non-phone devices or non-cellular devices can be incredible. And that's a new area for us to see. So that's continuing to advance.

And broad markets, again, 35% year-over-year, incredible numbers. And we're just really - and that's a market that there is so much share that we haven't captured. It's compelling to continue to make those investments in people and in technology to grow that. And then the mobile business will continue to do very, very well. If you look at where we see the market, we continue to see new content opportunities that we chase and invariably win. We've got a China position now that I think it's going to inflect higher, as the content there on a relative basis is still lower than it is in other markets. So, there is a great opportunity to move. And then the expansion of use cases. So it's customers and use cases that we just haven't seen.

Some of that came through the pandemic, a difficult period of time. And some of that were technologies that just emerge. You think about Zoom, you think about Peloton, store-to-door delivery to your house, touchless payments. All of this stuff is not going to go away. It's not going to go away. But it's also going to be powered by connectivity. It's going to be connected by the kind of things that we offer. Again, whether it's Wi-Fi, whether it's 5G, whether it's Bluetooth, I mean. So, there is a parallel market here that is building and creating unique momentum. I'm incredibly excited about the 35% broad market number in a period of time that typically was all about mobile. So, we're really demonstrating the ability to create diversification. But still in many cases, use common technology cores that run through our factories.

Craig Ellis - B. Riley FBR - Analyst

That's really helpful. It's pretty amazing to think that by late this year, those two businesses could be annualizing at $5 billion and $1.5 billion each. So, my follow-up really is for you and Kris on the share buyback. So nice to see the $2 billion buyback. The question is this, with $700 million remaining on the existing buyback, can you just give us some color on why now with the new authorization? And what was it that dictated that $2 billion was the right amount versus, say, $1 billion or $1.5 billion or even $2.5 billion to $3 billion?

Kris Sennesael - Senior Vice President and Chief Financial Officer

Yes. It's very simple, the time expired on the prior authorization. It's a $2 billion program for two years. So, that previous plan was put in place in January 2019 and expired in January 2021. And so we are putting in place a new $2 billion program covering the next two years.

Craig Ellis - B. Riley FBR - Analyst

Really helpful. Thanks so much, guys.

Liam K. Griffin - President and Chief Executive Officer

Thanks, Craig.

Operator

Ladies and gentlemen, that concludes today's question-and-answer session. I'll now turn the call back over to Mr. Griffin for any closing remarks.

Liam K. Griffin - President and Chief Executive Officer

Thank you all for participating on today's call. We look forward to talking to you at upcoming investor conferences during the quarter. Thank you.

Operator

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SKYWORKS SOLUTIONS INC

Q1 2021

Earnings Transcript

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