Your current Service Provider is not yet notified of your IMEI number, and in consequence, you get this error on the pop-up screen Not Registered on Network.ĭon’t worry, this problem has been encountered before and all the issues with Android devices Not Registered on Network are no longer occurring upon executing one of the below 6 methods: How to fix Not Registered on Network The Not Registered on Network error occurs when you attempt to make a call or text. You might find yourself in the situation where, after you’ve unlocked your phone the message Not Registered on Network will appear. What can you do when your phone displays the message “ Not Registered on Network”