I have tried everything on the discussions. My phone is not switching between wifi and 4g. My phone registers 105 C with temp probe. The charge will go from 70% to 5% in 30 minutes when it gets hot. I have to take the phone out of my pocket and cannot put the phone to my ear. The battery has been replaced twice. I do not know where to turn. I am ready for my plan to end and never see a Samsung phone again.