Want to use your Galaxy Note 8 on any carrier you want? Here's how to SIM unlock the Galaxy Note 8 right from home.

4. Enter unlock code Once AT&T emails you the 20-digit unlock code, you can enter it on your Nokia Lumia 1520 device. Go to the phone dialer and tap ##7820#.

A new hardware-based iPhone 4 hack unlocks devices running everything up to and including iOS 4.3, though it carries a $70 price tag and a couple of headache-inducing attached strings.