why is my phone alerting me of an unregistered sim card?

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  • Updated 5 years ago
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Unregistered sim card?
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Brittany Byham

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Posted 5 years ago

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Ivan, Mobile Master

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Your SIM card may be faulty. Power off your phone, remove the battery and SIM. Put them back and power on your phone. If you still don't get registered, head down to your nearest Koodo kiosk so that they can try a different card.
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Chad Burr, Mobile Master

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Hi brittany,

The usual reason is you've accidentally activated "2G only" or "gsm only" mode

Goto settings--- wireless and network ---mobile network

Check those settings.
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Ivan, Mobile Master

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That shouldn't throw out a registration error though. It should just say "no service" if that was the case. Still another good point and it won't hurt to try.
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Chad Burr, Mobile Master

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The galaxy ace and ace ii will both give that message if that mode is on.
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Timo Tuokkola, Mobile Master

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Depends on the phone. The galaxy ace always showed unregistered sim when 'use only 2g networks' was activated.
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Ivan, Mobile Master

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Good to know for future reference. Thanks for the info.
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Brittany Byham

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Taking out the battery and sim worked. Thanks guys :)
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Ivan, Mobile Master

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Anytime. Come back if you have any other issues!

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