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I am using Samsung Galaxy Chat B5330 (officially upgraded from 4.0.4 to 4.1.2). It used to work fine, but since a few days I am not able to call or send sms or use any network related services. It gives me error : "Not Registered On Network". I tried applying manual network settings. At first it gives a pop up : "Registered on Network". But as soon as I try to make a call, the same error : "Not Registered On Network".

I thought that factory reset would have been the solution to my problem, but unexpectedly , this too did not work for me. Please help.

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  • I don't know your device, so forgive my stupid question: Does it work with a SIM card? If so, have you tried that SIM in a different phone – and a different SIM in yours? Maybe the SIM has trouble.
    – Izzy
    Commented Aug 26, 2013 at 19:54
  • tried with the same sim card in different phone, it works fine there, and also tried inserting different sim card in my phone, still "Not Registered on Network".
    – shivshnkr
    Commented Aug 27, 2013 at 4:41
  • Sounds like a case for support then (trouble with the SIM slot). Sometimes it's just the contacts: you could try making the SIM "thicker" by sticking something to its back, so it gets pressed harder to the contacts. If that also doesn't work: Service time.
    – Izzy
    Commented Aug 27, 2013 at 5:48
  • some simcards work on my phone, i realise today that a roaming network sim card does not work on my phone, whereas that with home network works fine.
    – shivshnkr
    Commented Aug 28, 2013 at 3:51

2 Answers 2

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You need to check your SIM (Subscriber Identification Module) and if necessary get a new one from your service provider - If it is corrupted then you would not be allowed to sign on to the network. A factory Reset only wipes the device itself, not the SIM.

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  • my sim card works fine on all other phones except mine, and other sim cards also don't work on my phone.
    – shivshnkr
    Commented Aug 27, 2013 at 4:46
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    perhaps you have a flaky card slot - if the SIM is working in other phones and just not yours - I would check the card slot so you may need to service the device or try a new SIM card from the service provider..
    – Shadow
    Commented Aug 27, 2013 at 18:39
  • some simcards work on my phone, i realise today that a roaming network sim card does not work on my phone, whereas that with home network works fine.
    – shivshnkr
    Commented Aug 28, 2013 at 3:51
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The problem is when you try to call anyone the error message says “NOT REGISTERED ON NETWORK“. I was fascinated this error in my samsung phone, so I was working on this issue and trying to solve this issue.

How To Fix NOT REGISTERED ON NETWORK In Samsung or Android Phones

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  • Welcome to the Android Enthusiasts! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference (please edit your question and do so). Otherwise your question ceases to be helpful in case the link dies.
    – bmdixon
    Commented May 13, 2014 at 12:32

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