To get rid of frequent network problems, change the location of the phone, restart it, use airplane mode, check the SIM, and update the software. If your smartphone has frequent network problems, like ...
When an Android phone shows “Not Registered on Network,” it means the device is unable to communicate with the carrier’s ...
That doesn't mean that organizations don't commit a few blunders along the way, but the no-nos are more a question of having a network operate below expectations than one that doesn't function at all.
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