What is the percentage of revenue generated by Qualcomm's RF front-end business from 5G devices
 the June quarter is a trough from a margin perspective. And really, as you look forward from here, for us, the most important thing is the revenue scale. And hence, the things we highlighted in my prepared remarks both from an IoT growth perspective just gives us scale that allows us to expand operating margins. And then finally, the Huawei SAM, as we start approaching that SAM and really leveraging the existing products and road map both across handsets and RF front end and growing into that SAM, we already have the product portfolio to go there.
So as we grow there as well, it will be accretive to operating margins. So pretty happy with where we are at and looking forward to improving it going forward.
Matt Ramsay -- Cowen and Company -- Analyst
Got it. Thanks for that. As my follow-up, for Cristiano, you guys were kind enough to share a slide tonight that highlighted the diversity of the RF footprint across, I think, I don't know, a dozen or so premium Android devices both from global OEMs and in China. The question that I still get from investors is your confidence and ability to sustain or maybe expand that footprint as we go into next-generation devices maybe as some of the RF competitors have a bit more mature 5G stances in their portfolio.
So do you have any visibility as to how the -- with those OEMs, the footprint might continue as you go forward and be sustainable in the RF franchise? That would be really helpful. Thanks, guys.
Cristiano Amon -- President and Chief Executive Officer
Look, Matt, thanks for the question. It's a great question. And I want to start by maybe providing some data points and make -- emphasize some of the data we provide in the earnings script. We've heard a lot in the past that our RF front end business, a lot of people for the most of it was because of our leadership position in millimeter wave, which we do have a leadership position in millimeter wave.
But the reality is millimeter wave represent less than 20% of the revenues that we're showing in RF front end. The absolute majority of it is sub-6 and 4G actually, which actually shows that we're winning not only at the system level, we're winning at the component level. Otherwise, we will not come in as the fifth supplier and be winning 4G sockets. And that is kind of really highlighting what we said.
At the end of the day, you're going to have every single spectrum, whether it's existing spectrum through DSS that goes to 5G, plus the new mid-bands and the millimeter wave bands. We feel pretty good about our road map of RF front end. The fact we're winning designs across the board, it's a testimony that our strategy is working. And to your specific question about is this going to go away, we're now probably -- if you look at the beginning when we launched 5G in 2019, in early 2019, we're now multiple product generations and we continue to win RF front end.
So we're very confident about this business. It is a great growth story for Qualcomm. And the beauty of this, we're actually winning on technology.
Operator
Thank you. Our next question comes from Samik Chatterjee with J.P. Morgan. Please proceed with your question.
Joe Cardoso -- J.P. Morgan -- Analyst
Hi. This is Joe Cardoso on for Samik. My first question is on competitors. One of them commented pretty bullishly about targeting flagship millimeter-wave SoC opportunities next year.
So just curious to hear [Technical difficulties] on competitive landscape and market share dynamics going forward and whether you expect a return of more aggressive pricing in the industry?
Cristiano Amon -- President and Chief Executive Officer
Look, there's a lot of good things in this data point. I think this data point, when our competitors are targeting millimeter wave in China, it just validates that China is going to have millimeter wave. And that's how we read it. That's a great data point, consistent to what we've been saying.
It's going to add a lot of scale to millimeter wave. Look, Qualcomm has been very focused in our strong position in premium and high tier. There's an incredible opport
 the June quarter is a trough from a margin perspective. And really, as you look forward from here, for us, the most important thing is the revenue scale. And hence, the things we highlighted in my prepared remarks both from an IoT growth perspective just gives us scale that allows us to expand operating margins. And then finally, the Huawei SAM, as we start approaching that SAM and really leveraging the existing products and road map both across handsets and RF front end and growing into that SAM, we already have the product portfolio to go there.
So as we grow there as well, it will be accretive to operating margins. So pretty happy with where we are at and looking forward to improving it going forward.
Matt Ramsay -- Cowen and Company -- Analyst
Got it. Thanks for that. As my follow-up, for Cristiano, you guys were kind enough to share a slide tonight that highlighted the diversity of the RF footprint across, I think, I don't know, a dozen or so premium Android devices both from global OEMs and in China. The question that I still get from investors is your confidence and ability to sustain or maybe expand that footprint as we go into next-generation devices maybe as some of the RF competitors have a bit more mature 5G stances in their portfolio.
So do you have any visibility as to how the -- with those OEMs, the footprint might continue as you go forward and be sustainable in the RF franchise? That would be really helpful. Thanks, guys.
Cristiano Amon -- President and Chief Executive Officer
Look, Matt, thanks for the question. It's a great question. And I want to start by maybe providing some data points and make -- emphasize some of the data we provide in the earnings script. We've heard a lot in the past that our RF front end business, a lot of people for the most of it was because of our leadership position in millimeter wave, which we do have a leadership position in millimeter wave.
But the reality is millimeter wave represent less than 20% of the revenues that we're showing in RF front end. The absolute majority of it is sub-6 and 4G actually, which actually shows that we're winning not only at the system level, we're winning at the component level. Otherwise, we will not come in as the fifth supplier and be winning 4G sockets. And that is kind of really highlighting what we said.
 At the end of the day, you're going to have every single spectrum, whether it's existing spectrum through DSS that goes to 5G, plus the new mid-bands and the millimeter wave bands. We feel pretty good about our road map of RF front end. The fact we're winning designs across the board, it's a testimony that our strategy is working. And to your specific question about is this going to go away, we're now probably -- if you look at the beginning when we launched 5G in 2019, in early 2019, we're now multiple product generations and we continue to win RF front end.
So we're very confident about this business. It is a great growth story for Qualcomm. And the beauty of this, we're actually winning on technology.
Operator
Thank you. Our next question comes from Samik Chatterjee with J.P. Morgan. Please proceed with your question.
Joe Cardoso -- J.P. Morgan -- Analyst
Hi. This is Joe Cardoso on for Samik. My first question is on competitors. One of them commented pretty bullishly about targeting flagship millimeter-wave SoC opportunities next year.
So just curious to hear [Technical difficulties] on competitive landscape and market share dynamics going forward and whether you expect a return of more aggressive pricing in the industry?
Cristiano Amon -- President and Chief Executive Officer
Look, there's a lot of good things in this data point. I think this data point, when our competitors are targeting millimeter wave in China, it just validates that China is going to have millimeter wave. And that's how we read it. That's a great data point, consistent to what we've been saying.
It's going to add a lot of scale to millimeter wave. Look, Qualcomm has been very focused in our strong position in premium and high tier. There's an incredible opport