Samsung S6810
Sometimes kids try more time to unlocked your device pattern lock than lock your device if you forget your Gmail lock you can't unlock it. i will tell you how to wipe pattern lock your android smartphone.at first backup, you are all of the impotent data like contact number, messages, videos, etc. For hard reset Make sure your cell phone battery is not empty.
Samsung S6810 Hard Reset
1. At First Turn Off Your Call Phone Press Power Key.
2. Then Press and Hold Both of keys Volume Up + Home + Power Key To Turn On Your Device Until Show logo on the screen.
3. After Few Second You will See Android Recover Menu On Screen Then Select This "wipe data/factory reset" Use Volume Down Key To Scroll And Power Key To Confirm.
4. Now You Need To Select this option "Yes -- delete all user data" Again Pressing Power key To Confirm.
5. You Are Now Last Step Select This option "reboot system now" Press power key and wait few second device will be restart and solve your problem.
good job
done.