My wife and I just recently got K7s from our local MetroPCS store. Had them less than 2 months. Mine is fine but she started using the METROblocker app that comes preloaded onto the phone, it blocked a "scammer" number and now it keeps changing the volune up and down and playing a song with no audio that she never downloaded called, "dad". I tried restarting, taking out the battery, and even restarting in safe mode. When I try to delete the apps that she recently downloaded to hopefully stop the problem the phone won't allow me to press certain buttons. It registers that they were pressed but does nothing. Because of this I can't access the apps menu or storage to disable or delete anything. I haven't tried a factory reset yet, I was hoping to resolve this without that.