Bought 2x z928 from metro pcs and love it. 2 days later mine went dark no power no charging light no power and volume button reset. Exchanged it at metro corporate store in Florida. 2 days later my exchange did the same. Wife's phone is fine. Only difference in apps and settings was I set the fingerprint lock and she didn't. Now in NC with no metro corporate store nearby. Any suggestions on how to reset it because I really liked the phone.