How to Fix it When T-Mobile Mobile Network is Not Available If you're getting the 'Not Registered on Network' notification when you try to use your phone, there are some troubleshooting steps you ...

Have a Samsung phone? Seeing an annoying Not Registered on Network error and unsure what to do about it? Here's everything you need to know to fix it.

When that happens, you might see the "your phone is not registered on a network" on your screen, which means your SIM card can't connect to your wireless provider's network.

T-Mobile fixes the ‘LG IMS has stopped’ issue T-Mobile acknowledged the issue earlier this morning and said it was "actively working with LG" to resolve the issue.

Because only LG owners relying on T-Mobile are encountering the error, it looks like IMS services are being improperly implemented on that carrier's network specifically.