"Failure in applying unlock settings" error FIX

Device Unlock App will unlock your device in certain conditions, you can check if your phone is eligible by checking the T-Mobile Device compatibility page or just by trying it and pressing the Permanent Unlock button from the Device unlock app. If you trying it and you get a message like "Unlock Failed": This mobile wireless device is not eligible for unlocking. For Device Unlock eligibility details, please go online or contact Customer Care, basically means the phone is not eligible for a free unlock from T-Mobile.

In this case, you do not need to panic is still a way to get it done, you can get a T-Mobile Device Unlock service from onlineunlocks.com and you will have your phone unlocked in a few days max.

Device unlock app in some cases can return with different types of errors. One of those errors can be "Failure in applying unlock settings".We can help you fix this error with some simple steps.
This error is not related to the unlocking process, but to the Internet connection.

Okay, this problem can appear from a couple of reason, software, hardware, internet connections problems. Let's start and eliminate what may be the cause of the BIG bad ERROR:

  • First be sure that your device is up to date, update your device from "PlayStore" or any "Store" that your device has. Restart your device after you are done and connect it to a stable source of internet.

  • Please make sure that you have a good internet signal.

  • The most effective way of solving this error is with a factory reset. You can do a factory reset from System settings > Backup & reset. As a last resort can go ahead and restore full firmware either using the program Odin or Samsung Kies. Especially if your phone is rooted for sure this is the only solution. This last part might be a more complex process so if you decide to do this look carefully into it or ask help from a professional, can contact us on the chat our website OnlineUnlocks.com.