Turkce anlatim bulamadim cevirip yapabilirsiniz.
1 Turn your phone off before getting started.
2 Press the Home, Volume Up and Power keys at the same time until the logo appears, then release the Home button and keep on pressing the other two.
3 When the restore menu shows up, scroll down to Reformat/Restore to default condition using the Volume Up and Down keys then confirm by pressing the Power button.
4 Once reformatting is done, scroll down using the Volume keys to select Restart device and confirm with the Power key.
5 Your phone will be restarted and ready to use in a few minutes.