ZTE Avid 4G hard resetTurn off your ZTE Flash. Press Volume UP + POWER ON.
All data will be lost! If the recovery menu does not appear unlock ZTE Avid password using emergency dial-up pad and input Password reset code:
You can reset your ZTE Avid device's password: Turn off your phone, then turn it on. Select emergency dial. Input *983*987# in emergency dial-up pad. It will restore factory settings and your personal data will be erased.
Reset Your ZTE N9120 Phone from menu
The Factory data reset option erases all data on your phone and restores it to original factory settings. The data removed from the phone includes your Google Account, all system and app data and settings, and all downloaded apps.
1. Touch HOME > APPS > Settings > Backup & reset > Factory data reset.
2. Touch Reset phone.
If you want to remove all data saved to an installed microSD card, tick the Erase SD card check box before touching Reset phone.
3. Touch Erase everything and then follow the prompts to confirm the reset
After a reset you have to set up your phone again, follow the onscreen instructions to set it up.
To reset the ZTE Avid device from time to time for optimum performance, power off the device and remove the battery. Reinsert it and turn on your Andorid phone.