[sgxin]

Yes. 5-7 nm chips are used in hand phones because mobile phones' circuit boards are just the size of finger nail size. But circuit boards are used not just in mobile phones, they are used in all the high tech equipment including air-con system, vehicles, alternative power, artificial intelligence system, missiles, weapons, outer space stations, etc etc. 

And demand for the 5-7nm chips seems to be dropping (see video), whereas the demand for the larger nm chips is booming.
Eg BYD has a record sale for their NE cars last month and read that each NEV require as high as 2000 chips!

https://v.douyin.com/2JfBowo/

https://technode.com/2022/07/04/byd-beat...-vehicles/