Would you be interested in a cryptocurrency with its own blockchain that can easily be mined on both android and iOS phones?
That will never be happened, as you can see a lot of the mining rig has used the vga as the minimum requirement to mine altcoin and that can't run in the mobile device, or that will be exploded.
I agree with you. Coin mining in android or ios is very impossible, especially with the amount of memory space needed to do so. You need at least terabytes of memory to do the mining. I haven't seen yet any mobile device with such amount of space/memory. The phone's battery won't also be able to carry the workload to do mining, and it will really make it to bloat and explode.