Huawei M886 Mercury hard reset
With power off. Press and hold Volume Up + Menu + Power keys for 10 secs.
With power off press volume up, MENU and power simultaniously till reset screen appears use volume scroll down to master reset then power, then reboot phone.
or1. From the Home screen, press the Menu Key and touch Settings.
2 Touch the Privacy
4 Touch Factory data reset.
5 Touch Reset phone.
6 Touch Erase everything.