Thanx wadau nimepata msaada google kwa wenye hilo tatizo hapo juu njia hii hapa
1. Switch off the phone by pressing and holding the power button.
2. Now, press and hold the power button and the volume down button
(Power-on + Volume down button)
together until the phone has power on.
3. On the next screen that shows up, you should see about four ( 4 ) options, scroll down to "Factory Reset" or "Clear Flash" and select it. (Use the " Home button" or Switch button to select).
4. On confirmation, the factory reset process begins immediately. And,
when the process completes, the
phone boots up without the pattern security lock.