Hi, After 7 months of use of my M4 (dual sim), suddenly the phone started to restart and kept restarting. After half an hour or so it finally was OK. I also noticed that bluetooth wasn't working. After a reboot (power and volume down button ten seconds), bluetooth worked fine again and stoppped after a few hours. Later I noticed the same with wifi. Not working anymore.
I had problems with my first M4 that was replaced after a few days too.
I'm starting t have serious doubts about the M4 quality.....
I hope people here can help me what to do.
