Factory reset vary from one phone to another method and company to company but they often be the way one goal: access to delete all programs and applications that may have disrupted phone.
Ali Commons explanation is with us this is a special phone and can not be implemented on another phone, please pay attention very well all that has been added in the content.
How to Hard Reset BlackBerry 8500 Curve
Remove and insert the battery into your phone.Press Power button until your handset is on.
if phone is not response then following step:-
Security wipe From the Settings Menu
Go to the device options.
Tap on Security and Privacy
select general settings.
choose menu keys.
Tap on Wipe Handheld.
Select the include third-party application check box to delete all third-party apps.
Now select Continue.
Then put in the word blackberry and select OK.
Then process should now begin to erase the data.