Hard reset Sony Xperia MT11i to remove pattern lock via secret code. This trick works on some Xperia models, i have tested this code on Xperia MT11i Phone to reset pattern lock. Backup all data before try this method because this will delete all your mobile data (Mobile contacts, Messages, Call history). Below i have write the method, follow the method step by step.
Sony Xperia MT11i-Reset To Factory Default
1.switch on mobile “mobile show google lock”
2.then go to emergency call press this code *#*#7378423#*#*
after pressing key display show four option
3.choose “customization setting”
4.then press “reset customization” phone will reboot & reset