CAUTION : Before restoring your phone to factory default settings please take a backup of your necessary files of your phone because you will lose all your data. Remove your Memory Chip and Sim card. Check the battery status , It should not be Low.
1. When Phone is in Unlock Status
This way you can use most times found some issue’s resolve on your phone. To reset your android phone dial
and donot power off the phone, It will reset your phone default factory settings and automatically reboot it. You can use this way Only If “keypad is Enabled” .
2. When Phone Is in Locked Status
Sometimes can’t use keypad, long times using wrong patten on your patten lock, lock your phone. Then press
Volume up Key + Power button + Home button
for 30 second.
Now you can see recovery mode menu of your phone. You can move menu option using volume up down key and select options using home key. Now select factory rest option. Will reset your phone default factory settings and reboot it.