Performing soft reset and factory data reset ( master reset or hard reset ) ZTE Concord via Settings menu :
Performing hard reset via Settings
- Press Home Key
- select Apps
- select Settings
- select Privacy
- select Factory data reset
- select Reset phone.
- select Enter six zeros on the screen and touch Erase everything.
Performing Soft reset
If your phone hangs or does not responding, try to press and holding power key about 8-10 seconds. It will rebooting automatically. Or other way try to remove and re-insert the battery and SIM Card, then turn the phone on.
Warning! All data will be erased from device memory, including system and application data, settings and downloaded applications. Back up your important data. The device will restore to factory settings.