HUAWEI Activa 4G Hard Reset to remove the pattern lock and restore phone to the original settings. Remember! that hard reset erases all the data in the phone so take a backup before hard reset.
Reset by Codes:
Power on the device.
Next press the emergency call.
After that tap this code: *#*#2846579#*#* and press Factory Reset.
Hardware Keys Method:
Switch off the mobile by holding the power button.
Next press and hold Volume Up + Power button for about 15 seconds.
Then you will see Android recovery menu.
From the menu select "Factory reset/wipe data" using Volume Down to scroll option, and press Power button to accept.
Now browse option "Yes-detele all user data", and confitm that with Power button.
After that press Power button to accept option "reboot system now".