I'm sure many large smartphone companies like Samsung, iPhone and so on are developing smartphones for mining, this is because the future of the transaction system is crypto, so making smartphones for mining is a good thing.
I don't think it's possible to replace Bitcoin diggers. Because it seems that the work is too much for it and it will soon break down before you can dig into Bitcoin
Even though the phone is more modern and has a higher configuration, it's comparable to a computer.