First remove sim Card Make sure battery charge is not empty than reset your device.
1. turn on your call phone first.
2. Go To Home Screen Open Menu
3.Now Select Reset than Select Master Reset.
4. Select Yes Confirm whole process
5. when ask your security code type this 1234 default code.
done.
Method 2.
Remove sim card first.
1. Hold Your Call Phone power key to turn on your device.
2. Type This code *2767*3855#
wait few second device will be auto restart and solve your problem.
1. turn on your call phone first.
2. Go To Home Screen Open Menu
3.Now Select Reset than Select Master Reset.
4. Select Yes Confirm whole process
5. when ask your security code type this 1234 default code.
done.
Method 2.
Remove sim card first.
1. Hold Your Call Phone power key to turn on your device.
2. Type This code *2767*3855#
wait few second device will be auto restart and solve your problem.