My phone would freeze once in a while but it would usually start working again after just taking the battery out and putting it back in. But today when I was at the gym listening to some music my phone froze and shut off and i wasn't able to turn it on for like 10 minutes. When i turned it on it started working but froze like 2 minutes later. And now the phone barely turns on and just freezes at the lock screen. Anyone know how to fix this?