1. Power off phone
2. Press and hold Menu Button ( middle ) + power on for at least 10 seconds
3. Android System Recovery Mode Appear
4. There are 4 options
5. Move the options to " Wipe data / factory reset " using volume down ( - ) button and menu button to confirm, because the touchscreen doesn't work in reovery mode
6. After the process done, phone will reboot.
I hope I helped you.
2. Press and hold Menu Button ( middle ) + power on for at least 10 seconds
3. Android System Recovery Mode Appear
4. There are 4 options
- reboot system now
- apply sdcard:update.zip
- wipe data/factory reset
- wipe cache partition
5. Move the options to " Wipe data / factory reset " using volume down ( - ) button and menu button to confirm, because the touchscreen doesn't work in reovery mode
6. After the process done, phone will reboot.
I hope I helped you.