You happen to have found the only legitimate usecase for phone mining, phones that woiuld otherwise be recycled.
IIRC there was one actual miner that supported phones and pads, I think it was a fork of xmrig and I don't recall if it was for IOS or Android.
There's a thread around here for it.
But that's just a niche product, no one considers phones when developping mining software so your choices are extremely limited.
Good luck.
Update: found it
https://bitcointalk.org/index.php?topic=5338550.0I'm not endorsing it, just saying it exists.