08-16-2007, 08:34 PM
Join Date: Jan 2005
Model: iOS 5
Post Thanks: 1
Thanked 237 Times in 219 Posts
There's no such feature as "master reset" on the Pearl.
You can wipe all user data and effectively return the device to factory settings by doing a 'Wipe Handheld'.
Options > Security Options > General Settings > menu button > Wipe Handheld.
You'll also have to manually delete any third-party apps you've installed, as they will not be removed via 'Wipe Handheld'
You don't need the SIM card to do any of the above.