Note: For postpaid and prepaid phones, T-Mobile may ask for proof of purchase or information about your account to grant eligibility. Does T-Mobile automatically unlock eligible phones?

Peter is a writer and editor for the CNET How-To team. He has been covering technology, software, finance, sports and video games since working for @Home Network and Excite in the 1990s.

If you're a Verizon customer and you're thinking of switching to a new carrier or moving abroad, unlocking your phone from its contract can be a simple task. The process of unlocking your phone ...