One of All Gsm Solution

How to hard reset:
If you forgot your Lcd lock combination or password follow these steps.
Warning !All data will be lost!
1.Press together home button + power button
2.Release your fingers of the phone when Samsung logo appear
3.Choose with volume buutons "wipe data/factory reset" and select it with home button
4.Choose "yes" with volume buttons and select it with home button
5.Wait untiil format is complete
6.Select "reboot"