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My Samsung Galaxy S2 keeps saying not registered on network when I try to phone also a no entry sign where the signal bars should be keeps randomly appearing.

Does anyone know how to fix it or whats happening?

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2 Answers

It sounds like you may need to reset your APN settings, Your phone will be slightly different than mine, I'm using a Nexus 4. Try locating the following:

Settings -> Wireless & Networks -> Mobile Networks -> Access Point Names -> and from there locate the "Reset to default" option.

If that doesn't work, you can backup your device, and factory reset it.

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I have got to access point names but can not find a reset to default option. – leelee21xo Mar 13 at 17:38
i did have my phone unlocked from orange so i could put my vodafone sim in i dont know if that would effect it? but that was months ago and the phone has worked fine untill now. @Michael – leelee21xo Mar 13 at 17:40
Try looking here, Menu > Settings > Wireless & Network > Mobile Network > Access Point Names > then press Menu, and look for the reset option. – Michael Mar 13 at 18:02
ok found i have found it and reset it but it still says not registered on network, @michael – leelee21xo Mar 13 at 19:49
In that case I would perform a factory reset – Michael Mar 13 at 20:10
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hey leelee21xo: did you ever get this problem fixed as i am having the same problems.

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This is not an answer to the question. If you have the same problem, please wait for an answer. If not, do a search if the problem and solution already exists. If not, create a new question. :) – geffchang 1 hour ago

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