Overview
T-Mobile wireless devices come "locked," meaning they will only work with SIM cards from T-Mobile, and you will be unable to use a SIM card from a different provider, such as Verizon Wireless. Unlocking your T-Mobile device will allow you to use it on theVerizon Wireless network, using a Verizon service plan instead of a T-Mobile plan. Flashing from T-Mobile to Verizon Wireless may not sound like an easy task at first, but it is relatively simple. T-Mobile actually supports the unlocking of its phones for various reasons, and by using a simple unlock code, you can free your phone to work on not just the Verizon Wireless network, but any network out there.