In recent times many mining app has flooded play store. People has been mining but non of them attained mainnet. Even the one that went live on mainnet were very cheap after several years of mining. Example of mobile mining app that has been in existence for long and still no value
Pi network
Bee network
Bitcoin legend
Alpha network
Star network
Hbcu
Tavacchiacoin
Bondex
Ant network
Coinx
And many others. I have many of this coin mined but all to no avail. all this while the only two phone mined coin I know that has come to open mainnet and found in exchanges are:
Satoshi/ CoreDao
Remitano.
What is your experience on mobile crypto mining?