The mobile miner seems to be useless to GPU miners, it doesn't seem to even benchmark the phone, it just gives 15-20h/s to everyone.
Well that's fine, I was worried a lot of people would sell their free mobile-coins to whatever price available, droping the already cheap price even lower. As long as it's not damaging to the whole network, I'm fine with the mobile miner.
There is definitely some cpu validation being done, Top end phones can hit 50H/s, my mid-range SD 820 phone does 20H/s, and my backup SD 801 phone does 6H/s.
It might be as simple as a table for each cpu type and a hash-range to use, but it certainly isn't giving hash out at random.