Phone computational power is very low to the computational power of computers.
I wouldn't be surprised if my (high end) phone has more computing power than my (old) laptop, but I'd never use it for anything serious. Phones are terrible to secure, it's much easier to run an offline laptop and wipe it afterwards.
I am curious how hot my phone would get after full CPU and GPU load for a couple of hours though.Naturally, you are talking about some accounts that contain quite large amounts of Bitcoin or cryptocurrency. For such accounts, it is logical to use hardware wallets.
But for any cryptocurrency lover who has been involved in this topic for a long time, the number of all kinds of wallets or accounts is in the dozens, I have no doubt about it. And for example, on some of them, for example, Satoshi worth less than $10. It is in such cases that there will be a demand for some simple applications on Android. Roughly speaking, when the owner of such wallets with small amounts is simply too lazy to engage in serious programs like the same BTCrecover. For example, why should he bother with Python, with the command line and fiigure it all out, if in the Android application he simply entered a password and received a couple of keys.
It’s convenient and I think it will still be in demand. And the performance of the latest smartphones is indeed very good.