08-16-2007, 07:34 PM
Join Date: Jan 2005
Model: iOS 5
Post Thanks: 1
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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.