What was the top customer for fiscal '21 and what percentage of total revenue did they contribute 
itioned to navigate through that. We definitely have the technology that is needed to make that lift in China. And our numbers there continue to look very strong.
So, it's a great part of the portfolio. It definitely is an opportunity to kind of enrich the technology within those phones. They're still a little bit lighter than some of the flagships that we have in the U.S. But we have to know how to do it.
The other thing about the China market is they want integration. They want labs to fast types of products. They want our applications engineers. They need people that can make the job easier for them and fulfill a smooth transition to the consumer.
So, all that stuff around the edges, that's our bread and butter. So, we are a great advocate there, and we're a great partner to those OEMs.
Harsh Kumar -- Piper Sandler -- Analyst
Thanks, Liam.
Operator
Thank you. Your next question comes from the line of Timothy Arcuri from UBS. Please proceed with your question.
Timothy Arcuri -- UBS -- Analyst
Thanks a lot. Kris, now that the fiscal year is over, can you give us a sense of what your top customer was for fiscal '21?
Kris Sennesael -- Chief Financial Officer
Yes. The top customer came in at 59% of total revenue on a full-year basis. By the way, in Q4, that was approximately the same 59%, which is slightly up from the Q4 of fiscal '20, which was at 56%. But of course, you have to take into account the timing of the launch of some of the new smartphone platforms there.
I mean, this is a big number, but it really underscores the deep customer engagement that we have with this customer, by the way, not only in their smartphone lineup but almost in every other product that they have and that they sell, you will find Skyworks inside. Also, in Q4, the quarter we just closed, the Skyworks team really executed well, supporting the launch and the ramp of a new smartphone platform that yet again, for now almost 10 or 13 times in a row, we were able to obtain higher dollar content per phone as witnessed by the tier downs that came out when the phone came out. And you can see when you look at the tier downs, we really provided multiple high-performance, very complex, highly integrated solutions, multiple sockets in that form that includes, in many cases, multiple best-in-class filters, including TC-SAW and bulk acoustic wave technology across the transmit chain, the receive chain, as well as many other functionalities, including GPS and WiFi, of course. So, great execution there by the team.
Timothy Arcuri -- UBS -- Analyst
Thanks a lot for that, Kris. I guess as my follow-up, there's kind of a lot of noise in the China market. I know that you don't have as much exposure to the domestic market or at least the Chinese OEMs as some of your peers do, but there's some diverging data points. I mean, end market sell-through is not great.
But definitely, the high tier seems pretty tight. So, can you just talk about what you're seeing in China maybe -- and maybe you can have a distinction between sell-in and sell-through? Thanks.
Liam Griffin -- Chairman, Chief Executive Officer, and President
Yeah. I mean, the China market is important to us, and we've played that quite well. We have great partnerships with all the leading brands. I think the key here, and Kris kind of mentioned it, it's all about performance.
It's not just -- it's not phone to phone, it's technology to technology. And you see a very, very different technology in the higher-end players in China, where they are embracing the kinds of increasingly complex signals that Kris mentioned, using bulk acoustic wave, using our TC-SAW, using an integrated approach, a Sky5 approach. In that side of the field, it's great, and we have a tremendous opportunity. We're continuing to grow the content because the complexity is going up.
The complexity is what's driving the content. So, we're making that adoption happen rapidly depending -- independent of market conditions. And we're also trying to uplift the lower end. There's still a pretty high percentage of lower-end phones in China that we
itioned to navigate through that. We definitely have the technology that is needed to make that lift in China. And our numbers there continue to look very strong.
So, it's a great part of the portfolio. It definitely is an opportunity to kind of enrich the technology within those phones. They're still a little bit lighter than some of the flagships that we have in the U.S. But we have to know how to do it.
The other thing about the China market is they want integration. They want labs to fast types of products. They want our applications engineers. They need people that can make the job easier for them and fulfill a smooth transition to the consumer.
So, all that stuff around the edges, that's our bread and butter. So, we are a great advocate there, and we're a great partner to those OEMs.
Harsh Kumar -- Piper Sandler -- Analyst
Thanks, Liam.
Operator
Thank you. Your next question comes from the line of Timothy Arcuri from UBS. Please proceed with your question.
Timothy Arcuri -- UBS -- Analyst
Thanks a lot. Kris, now that the fiscal year is over, can you give us a sense of what your top customer was for fiscal '21?
Kris Sennesael -- Chief Financial Officer
Yes. The top customer came in at 59% of total revenue on a full-year basis. By the way, in Q4, that was approximately the same 59%, which is slightly up from the Q4 of fiscal '20, which was at 56%. But of course, you have to take into account the timing of the launch of some of the new smartphone platforms there.
 I mean, this is a big number, but it really underscores the deep customer engagement that we have with this customer, by the way, not only in their smartphone lineup but almost in every other product that they have and that they sell, you will find Skyworks inside. Also, in Q4, the quarter we just closed, the Skyworks team really executed well, supporting the launch and the ramp of a new smartphone platform that yet again, for now almost 10 or 13 times in a row, we were able to obtain higher dollar content per phone as witnessed by the tier downs that came out when the phone came out. And you can see when you look at the tier downs, we really provided multiple high-performance, very complex, highly integrated solutions, multiple sockets in that form that includes, in many cases, multiple best-in-class filters, including TC-SAW and bulk acoustic wave technology across the transmit chain, the receive chain, as well as many other functionalities, including GPS and WiFi, of course. So, great execution there by the team.
Timothy Arcuri -- UBS -- Analyst
Thanks a lot for that, Kris. I guess as my follow-up, there's kind of a lot of noise in the China market. I know that you don't have as much exposure to the domestic market or at least the Chinese OEMs as some of your peers do, but there's some diverging data points. I mean, end market sell-through is not great.
But definitely, the high tier seems pretty tight. So, can you just talk about what you're seeing in China maybe -- and maybe you can have a distinction between sell-in and sell-through? Thanks.
Liam Griffin -- Chairman, Chief Executive Officer, and President
Yeah. I mean, the China market is important to us, and we've played that quite well. We have great partnerships with all the leading brands. I think the key here, and Kris kind of mentioned it, it's all about performance.
It's not just -- it's not phone to phone, it's technology to technology. And you see a very, very different technology in the higher-end players in China, where they are embracing the kinds of increasingly complex signals that Kris mentioned, using bulk acoustic wave, using our TC-SAW, using an integrated approach, a Sky5 approach. In that side of the field, it's great, and we have a tremendous opportunity. We're continuing to grow the content because the complexity is going up.
 The complexity is what's driving the content. So, we're making that adoption happen rapidly depending -- independent of market conditions. And we're also trying to uplift the lower end. There's still a pretty high percentage of lower-end phones in China that we