BlackBerry 9900 Bold Touch Hard reset
Select All > Options > Security. Select Security Wipe.Â Â Enter "blackberry" in the text field to cxonfirm. Tap Wipe Data.
From menu select : Menu key > Options > Security Options > Security Wipe > Enter "blackberry" (without quotes) then press the Wipe button on screen.
To delete data from the messages application, contacts application, and other applications, select the Emails, Contacts, Etc check box.
To delete all third-party applications that you have added,
select the User Installed Applications check box.
To delete all files from your media card, select the Media Card check box.
Warning: All data on your phone will be deleted.