The problem here isn’t knowledge, but incentives. Like, someone could design and start manufacturing a phone with very standard stuff, but it wouldn’t sell except for a dozen enthusiasts. Even on PC, Linux isn’t as widely used as Windows on consumer hardware, as there’s no focus on user experience. For a phone like that to work, they would need to solve a problem most other phones don’t solve.
The problem here isn’t knowledge, but incentives. Like, someone could design and start manufacturing a phone with very standard stuff, but it wouldn’t sell except for a dozen enthusiasts. Even on PC, Linux isn’t as widely used as Windows on consumer hardware, as there’s no focus on user experience. For a phone like that to work, they would need to solve a problem most other phones don’t solve.