1: Before placing order please open the T-Mobile device unlock app on your phone having an active 3G or Wi-Fi internet connection.
2: Make sure your device displays the message "Unlocked Failed Not Eligible For Unlock" then go ahead and place the order,refer to the image below.
3: If device shows "Server Not responding,failure in processing the request,Please Do Not Submit Order Before Fixing This Issue,Find The Fix By Clicking The Link Below T-mobile device Unlock App Troubleshooting " Server Not Responding " Click here to view More
Supported Model ZTE T-mobile device Unlock App
ZTE Avid Plus (Z828) ZTE Obsidian (Z820) ZTE Avid Trio (Z828) ZTE Zmax Pro (Z981) ZTE Zinger (Z667T)
4 : How To Place Your Order with Unlock Phone Store
5: Once we email you that your device is “Unlocked” Open the app and select “Permanent Unlock”.
6. Your device’s IMEI number is now registered as “Eligible” to be Unlocked in MetroPCS System.
7. Your device will reboot and you can use your MetroPCS device on other Carriers.