Motorola XT800 ZHISHANG hard reset
hold silent + volume up + camera key and power on
don't release any key release only power button& wait till triangle to appear
after that release all buttons then again press " volume up & camera buttons together you will see a format menu scroll down to wipe data factory reset with volume down key & press silent key on the top to select.
XT800 Reset & clearTo reset your phone to factory settings and erase all
the data on your phone, press Menu > Settings > Privacy > Factory data reset > Reset phone.
Warning: All data on your phone will be deleted. Data on your memory card will not be deleted.
Note: If you forget your unlock pattern, you will need to reset your phone to its initial factory settings
In the unlikely event that your phone stops responding
to taps and key presses, try a quick reset. Remove the
back cover and battery, then replace and turn on your phone as usual.