Yeah to be honest this is pretty intersting. So your hashrate did not just increase a little bit it doubled ! Did you maybe do an software update for your phone or the mining app ?
Richard explained in their last facebook live video they would update the mobile mining algorithm to increase the hashrate of lower power phones so it looks like they implemented that.
It's really nice of them

The funny thing is that now my A5 moblie "mines" (i'd rather say "pretends to mine") 10-15% better than my FX8320 cpu
even if mobile shows 30 h/s and cpu shows 425 h/s
