Go to Apps Menu
Tap "Settings" icon
Tap "Backup and reset"
In "Personal data"section Tap "Reset device" button
Tap "Factory data reset"
Tap "Erase everything"
Salut
https://www.youtube.com/watch?v=Yg3uuv-3jns
Cred ca e cea mai simpla metoda. O poti folosi si daca iti uiti parola de la deschierea telului. VEZI CA SE STERG TOATE DATELE!