To make a hard reset the Huawei Ascend P7, you just have to follow these steps:
1. Turn off the device completely, retÃrale battery and re-donning few seconds later.
2. Press and touch and hold Volume Up and Power for 15 seconds until the recovery menu.
3. Select the Factory Reset / Wipe Data option by scrolling with the volume keys and selecting the button.
5. Then select "Yes - Delete all user data" in the same way.
6. Then click "reboot system now"
That is all!