How to Blackberry format/factory reset

Go to options------->security options--------->general settings-------->press the bb button and click wipe handheld--------->tick off third party applications if you want to loose them all------->click continue and get type able season just type: blackberry and hit the enter button and the blackberry will now reset and reach factor state, then don't touch any key on phone your phone will be automatically full format.

Note: Lose any type of external data will be delete example: Contact no., Application, phone memories media store, Notes, Calender, etc to your phone so you need when any data so we tell backup first your choice data.