MetroPCS USA - Android Official Unlock (Device Unlock App)
#1 WARNING: IF THERE IS UNLOCK FAILURE, YOU MUST HOLD CUSTOMER'S PHONE WHILE WE FIX ISSUE (ZERO REFUND IF YOU RETURNED CUSTOMER'S PHONE BEFORE WE FIXED THE ISSUE)
#2 WARNING: LET YOUR CUSTOMER KNOW THIS POLICY & ACCEPT ORDER ONLY IF THEY AGREE!
Make sure your phone can communicate with "Device Unlock App" server BEFORE placing your order.
It's mandatory with "MetroPCS Device Unlock App" service to check BEFORE placing your order that your phone show "Not Eligible for Unlock" error.
If instead you have the error "Server not responding" this mean your phone is not even able to communicate with MetroPCS Server (Communication Error)
You need to fix this problem before ordering since we do not accept complaint / refund request about this specific error.
However we do have some tips to get rid of this error:
1 - Make sure you use the original Stock ROM from MetroPCS since it will not work if you flash your phone with any custom Firmware from T-Mobile, CyanogenMod, or even an Unbranded ROM.
2 - However make sure you're using the last version of MetroPCS firmware for your cellphone.
3 - Finally (after upgrade) perform a Hard Reset on your cellphone (you'll find Hard Reset method on: http://www.hardreset.info or check on YouTube).
4 - Turn off 3G/LTE and force the use of a local WiFi Hotspot.
5 - Make sure you use home Wifi (and not a public/company WiFi since they might use firewall, vpn, etc.. that will trouble communication)
If none of these recommendations work for you, then we don't have solution.
Once the unlock request is processed, you'll need to:
Make sure you have an active data connection via 3G/4G/LTE or Wi-Fi.
From the Application list, tap Device Unlock. (Note: The application may be located in the MetroPCS folder.)
Choose the Permanent Unlock type:
If successful, restart the device to apply the settings.
All you need is an Android device that supports the Mobile Device Unlock app:
HTC Desire 626s
Kyocera Hydro ELITE (C6740),
LG Leon 4G LTE (MS345),
LG G Stylo (MS631),
Samsung Galaxy Core Prime (SM-G360T1)
Note: If you do not restart the device, you will have a persistent alert in the notification tray.