T-Mobile has released an app for unlocking your phone

Now that cell phone unlocking is again legal in the U.S., many smartphone users may be interested in unlocking their devices, either for carrier switching purposes, or for selling their old devices that were purchased with a new contract, and thus were locked to a certain operator. Luckily, for T-Mobile subscribers, there’s an app for that which was specifically conceived by the carrier to allow users to easily unlock a handset. However, the app has one huge limitation.