Format MyPhone A919 Duo to reset Pattern Lock and solve other problems, Like Hang, Freez, slow speed of operating system. This is Hard Reset method by keys to reset all settings to factory default settings. All installed apps and games, Messages, Call history will be removed after hard reset phone, So take backup all important data before reset mobile. Make sure mobile battery is 70% charged before reset device. Below is step by step procedure, follow each step as mentioned.
How To Format MyPhone A919 Duo
Power off Phone.
Press and hold Volume Up + Volume Down and Power Buttons together.
Release When Recovery menu appear.
With volume keys select Wipe data/Factory reset and press home to confirm.
Select Yes.....delete all user data and press home to confirm.
Reboot phone to complete the job.