no need research, it depends on what the developer mean by "mining" here.
because apparently there are many mobile mining that didn't actually mine anything since token is pre minted and dev just distribute the token to their users who do some mundane things such as repeatedly clicking the app and count the reward based on that.
it doesn't mine anything because it doesn't solve mathematical problem, so if that's the case it won't affect mobile performance.

pretty different if by installing app somehow the devs requires your computing power to solve problem, then it's mining, but you can easily notice this kind of mining because if they truly do mining in your mobile app, it'd be recorded on battery usage history, etc.