How to Hard Rese O2 Xphone 2 / Xphone 2M, SDA / Like those:1. Turn off your xphone
2. press and hold left + right soft menu key
3. while still holding left+right soft menu key, press the on/off button ONCE and RELEASE.
4. keep left + right soft key pressed until you see the message:
"Press 0 to restore fatory setting, other key to quit"
5. press 0 and wait for the phone to boot up, the restoring of factory default will begin and will ask to reboot your phone when done.