Do you have a T-Mobile phone and currently you are not able to unlock it using codes? Here you can find a solution.
[5 July 2015 - now supporting official service / no software change required]More
Here we explain: Network Unlock, Region Lock, SIM Pin, SIM Puk, Hard Lock, Bootloader Lock, Phone password.More
[The service just restarted and is working fine]
At the moment there is a delay with all Huawei manufacturer services. We are doing our best to get the service back online ASAP.
We are now able to unlock all latest handsets sold by MetroPCS running "Device Unlock" official app.
LG Leon, LG G Stylo and any brand/model introduced after June 2015.More