Open the Settings app on your DOOGEE S41.
Scroll down to Factory data reset and press Power to confirm.
The phone will restart and perform the reset. This takes about 2–3 minutes. Use this method if the screen is frozen, you forgot your password, or the phone won't boot normally.
The phone will boot into No Command mode. You will see a small Android robot with a red exclamation mark.
Scroll down and tap on System .
Here are the two proven methods to hard reset a DOOGEE S41. Use this method if your phone is working well enough to access the menu.
If prompted, enter your screen lock password or PIN.
Finally, tap Erase everything to confirm.