Have you ever wanted to switch phone companies? But you want to keep your old phone number. This is totally possible! It's called SIM porting or mobile number portability (MNP). This guide will help you understand it. It will also show you how to do it easily. Imagine you have a favorite t-shirt. You love it. You want to wear it every day. But your closet is getting old. You want a... aolists.com