So I just tried doing a factory reset after my problems with people not being able to hear me or me hear them during phone calls. I did the factory reset by turning the phone off and holding the power button at the same time as the home button to get into recovery mode. I chose the factory reset from there. When the phone booted up, it never prompted me to activate it with the dialer. Everything was reset and it prompted me to set up the google account and stuff, but it was like it remembered my phone number and everything. Why did it do this?