Originally Posted by John Tiner
Check that you have an active data connection.
The device must use the Device Unlock Application (sometimes, the Device Unlock App is already installed so you don’t need to download it again)
The device must NOT be reported lost or stolen, blocked, or restricted to T-Mobile
Clear the application cache. See your Device > How to > Apps > Clear & uninstall app.
Check that the device memory is properly managed. (click here for tips)
Restart the device and try again.
Read this article for unlocking process
Is this scam?
My device doesnt ask for unlock code to unlock, All it says is, when poered on is :Using d unlock App to unlock your device,if eligible, , And i used the app but no luck ,cos am not eligible
How else can i unlock that?