Well a sim unlocking app of course! U.S. carrier T-Mobile has released a Sim Unlocking app that will let you use your phone on other GSM networks. Sounds unbelievable right?

To use a T-Mobile branded phone on another wireless carrier’s network with a non-T-Mobile SIM card, you must first request a “SIM Unlock” code from T-Mobile.

Switching carriers or using a different SIM card on your iPhone doesn’t have to be complicated. If your device is SIM-locked, it can prevent you from connecting ...

Sim Unlock Reference: 0XXXXXX IMEI: 0XXXXXXXXXXXXXX Unlock Code: XXXXXXXX Thank you for taking the time to contact T-Mobile. Below you will see the Instructions for unlocking your Sidekick device.

The unlocking process is actually very simple. Once you get your hands on an unlock code–which can be purchased for $22.99–you just insert a non-T-Mobile SIM card, enter the unlock code and ...

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.

Note: T-Mobile USA and Metro PCS customers cannot use the standard SIM unlock codes. Jump to the next section if you purchased your Galaxy S9 or S9+ from T-Mobile or Metro PCS.

Need to unlock your Galaxy S7 or Galaxy S7 Edge for use on another network? Here's how to SIM unlock the Galaxy S7 and what you need to know.

Does the Lumia 810 have LTE on board? The T-Mobile Lumia 810 only has support for T-Mo’s HSPA+ bands, at least officially speaking (from Nokia specs and FCC filings).

A step by step look at unlocking the iPhone's SIM card and making it available to other cell carriers' networks.