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Tried to change Network provider/A50 Galaxy

Discussion in 'Android Devices' started by Janeire, Oct 15, 2021.

  1. Janeire

    Janeire Newbie
    Thread Starter


    Can anyone help to solve this issue, please?.

    I changed my Network provider, and installed the new Sim Card. I used PAC to keep my old number.

    It is supposed to have been Activated, but all I get is, ‘No SIM. Emergency calls only’.

    As you know, after Factory Reset, I need to get Samsung’s Verification Code; but Samsung automatically require account Backup. SIM Card not working so I cannot Login to get Verification Code.

    I always get that ‘message’ sound but nothing appears on the Screen.

    I also get, ‘Phone not registered on Network’.

    Please see below:

    About Phone
    Status Information
    SIM Card Status
    Network Not available
    Mobile network state Not available
    Service provider info Not available
    Service state Not available
    IMS registration status Not registered
    Signal strength Not available
    Mobile voice network type Not available
    Mobile data network type Not available
    Roaming Not available

    Many thanks for any suggestions

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  2. Dannydet

    Dannydet Extreme Android User

    Why did you do a factory reset? Swap out Sim card is all that was needed.
    ocnbrze and puppykickr like this.
  3. puppykickr

    puppykickr Android Expert

    Is the device unlocked?
    If not, then it will not recognize any SIM other than the original carrier.
    Dannydet and ocnbrze like this.
  4. Janeire

    Janeire Newbie
    Thread Starter


    Thanks for your responses. Device is not locked, i have had it for about 2 and a half years.
    I have had the same number for many years and always use a PAC code to bring it when it to new phone.
    I never had any problems before.

    Why did I do factory reset?. Having encountered this problem, I contacted both the old provider and the new one.
    Each of them kept telling me to go to the other for a solution.

    That is why I thought a reset would solve the issue. I am a novice. I checked my Account with the new provider, and it is their SIM Card phone number which is registered in the Account. it is that SIM Card phone in the phone.
    I tried putting the OLD SIM back, but the Account with the old provider is closed.

    So what SIM Card could I I swap out for, please?.

    It seems there is a conflict somewhere, with The PAC, because the new provider mentioned 'Invalid Combination', (with details provided by the old provider).
    #4 Janeire, Oct 15, 2021
    Last edited: Oct 15, 2021
  5. puppykickr

    puppykickr Android Expert

    Get a new SIM card from your current provider.

    If possible, install it and activate it in a brick and mortar store of your carrier.
    #5 puppykickr, Oct 15, 2021
    Last edited: Oct 16, 2021
    ocnbrze and Dannydet like this.
  6. Janeire

    Janeire Newbie
    Thread Starter

    Thanks for the info, but I do not understand the lingo, 'brick & mortar store?'.
  7. Dannydet

    Dannydet Extreme Android User

    A real store / location. That you can walk into.
    puppykickr, ocnbrze and marctronixx like this.
  8. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Actually I don't know this: I've been using Android for more than a decade but never heard of anyone needing anything from the phone manufacturer after a reset. Is this some Samsung thing, or is it related to a Samsung account? (I'm curious in part because my next phone might be a Samsung, but if they have some control-freaky stuff like that in addition to Android that would rule them out. But if it was just for access to a Samsung account that wouldn't bother me, as I will never create one ;)).

    The obvious question is does the new SIM work at all? If you have access to another unlocked phone does it work in that? Otherwise I would be tempted to tell the new provider "your SIM doesn't work in an unlocked phone, other SIMs do, so this sounds like a problem with your SIM". And don't accept them blaming the old provider (all companies do this: if there's another company involved the simplest way to get rid of you is to say it's the other company's fault. If someone tries that insist on speaking to their supervisor). Even, as suggested above, go into a physical store to discuss with someone there: they can then test with another SIM there and then - if the phone works with another SIM that proves that the problem is the SIM they have provided, and then they can sort it out (e.g. give you a new SIM and transfer the number to it).
    puppykickr, Dannydet and ocnbrze like this.
  9. Janeire

    Janeire Newbie
    Thread Starter

    Using the PAC code I always keep my number. On this occasion, first SIM did not work, second SIM has not worked.

    I have a Samsung Account, 2-Way Verification. As the SIM does not work, I cannot get into the Account for Verification.

    So that answers your question. Not sure if 2-Way Verification is compulsory.

    I believe there are some online tools to 'break' the lock, but I am novice.

    The current provider does not, it appears, have store for me to go to.

    In my opinion, I think Ofcom should make provision for companies to co-operate and resolve such issues; since they have the resources. I may contact Ofcom.
  10. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Ah, so you are British ;).

    I think that 2-step verification for a Samsung account is a red herring here: the lack of a mobile connection is getting in the way of that verification, but I don't believe that lack of access to that account should stop the SIM from working. So the real question is why do the new provider's SIMs not work?

    Are you absolutely certain the device is unlocked? Some providers are still selling locked phones (though there is a legal deadline for that to end now in the UK), others are not, so I just want to absolutely rule out the possibility that you have a locked handset. Because if you haven't then it sounds like they are somehow giving you SIMs that are not technically compatible with the phone, which would be a bit surprising when the phone is only 2 years old. But if the phone is unlocked then PAC codes etc only relate to the transfer of the number, not to whether a phone can read a SIM or not, so there's something fishy here.

    I really would take it into one of the provider's shops, explain the situation to them and get them to try a SIM in it.
    puppykickr, Dannydet and ocnbrze like this.
  11. Janeire

    Janeire Newbie
    Thread Starter

    The phone was bought new. Unlocked, otherwise I would not have bought it. Transferring my number and setting up, was easy.

    Now, I have learned something, PAC code versus reading of SIM, and I certainly did not think about compatibility. Thank you.

    My background allowed me to think it was very odd that 2 SIM Cards did not work. I have gone through a number of Network providers over the years, different model phones, and this is the VERY first time I had such an issue. 2 x SIMs?.

    The only provider I could check with is the one I have just ended my contract with, and they were not helpful with my previous queries.
  12. Hadron

    Hadron Smoke me a kipper...
    VIP Member

    Yeah, 2xSIMs makes it unlikely that it's simply a faulty SIM. There are sometimes changes in SIM technology, and I've seen some UK providers refer to "5G SIMs", so it's possible that there have been changes in the last couple of years. Now I'd expect SIMs to be backward compatible with older handsets, so I wouldn't think you'd have to worry about this, but if there are two types of SIM in circulation it might be worth making sure this isn't the issue - and the simplest way of doing this would be to speak to the new provider (sticking one of their PAYG SIMs in might also be worth a test, but you don't want to have to spend money to do this. Heck, if they want your business they ought to be trying to work out what is wrong).

    It feels slightly unlikely to me, but it is the only thing I can think of really.
  13. Janeire

    Janeire Newbie
    Thread Starter

    I did fault tracing.

    Took the SIM Card, wiped with a clean towel.

    Replaced it, set up phone as is usual.

    Everything works, for example, contacts; etc.

    Go in to 'About phone', number still shows as not registered.

    Contacted, and, awaiting response from new provider.
    Dannydet likes this.

Samsung Galaxy A50s Forum

The Samsung Galaxy A50s release date was September 2019. Features and Specs include a 6.4" inch screen, 48MP camera, 4/6GB RAM, Exynos 9611 processor, and 4000mAh battery.

September 2019
Release Date

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