How To Unlock Pattern Lock on Samsung Galaxy Ace Duos S6802 via hard reset method with in minutes. By using this trick we can also solve the problem like slow speed of operating system and hang problem. Keep in mind all your installed apps and games will be deleted by this method. So take backup of all mobile data like contacts, messages, gallery, in memory card or computer. Here step by step procedure to hard reset Samsung Galaxy Ace Duos S680, just follow the instruction as gives below step by step. Also make sure mobile battery is charged 50 percent.
:-Power off mobile or remove and insert mobile battery.
:-Press and hold Volume Up + Home and Power keys together.
:-When Android system recovery menu appear release the keys.
:-Select Wipe data/factory reset option and press Home button to confirm option.
:-Select Yes…… delete all user data and press Home button to confirm.
:-Reboot mobile to complete the method.