SONY ERICSSON Xperia Arc X12 Hard Reset

SONY ERICSSON Xperia Arc X12 LT15a Hard Reset to remove the pattern lock and other security lock and change the phone settings as the setting stored in it at the time your bought it new from the store. However hard reset erases all the data so take backup before hard reset.

1. Power on the phone by holding the button for a while
2. Then go to Settings and then to Backup & Reset (or Privacy).
3. In this step tap Factory data reset and Reset Phone. 
4. Next, choose Erase Everything if you are sure you want to clear all your data. 
5. Finally, select OK to confirm the whole operation.
6. Good Job! You have performed your job.