In TAU mobile mining, there are two types of block reward: 1. mining reward which gives to block winner. 2. trx participation reward which gives to the address cause the trx sender balance. this will changes to sharding reward in the future.
Therefore, the tau mobile reward is not concentrating to block winners, but everyone perform work making trx and sharding and mining.
What would happen to those with low mining power yet the app miner is still on. Won't he get the credit even a little for just opening his app for a long time. It seems the low-mining-power miner will be ignored.