First method

1. In the first step hold down the Power key in order to turn off the device.
2. In the next step press and hold the Volume Up + Power button at the same time for a few seconds.
3. You should relase held keys as soon as the Huawei logo appears on the screen.
4. Select using Volume buttons option “wipe data/factory reset“, and confirm that with Power button.
5. Once more choose “wipe data/factory reset”  from the menu, and accept it with Power key.
6. Now accept option “reboot system now” using Power button.
7. Congratulations! You have just performed the hard reset operation

Second method:

1. The device must be turned off, so hold down the Power key for a couple of seconds.
2. Then from the home screen open Menu and choose Settings.
3. Next, scroll down to Advanced settings and hit this optiom.
4. In the next step tap Backup & Reset.
5. From the followion options select Factory data reset.
6. Finally, choose Reset phone, and confirm the whole operation tapping Reset phone one more time.
7. Good job! Your device is ready to use.

Third method:

1. Begin by switching on the device by using the Power key.
2. Afterwards you have to open the phone’s dialer.
3. Type in the following secret code: *#*# 2846579#*#*
4. From the menu in front of you choose Restore Factory.
5. Tap OK to confirm the whole operation.
6. Excellent! You just accomplished the Factory Reset operation.