topic Re: No connection all of a sudden in Just Hang Out

Google Pixel 8 "SIM no longer supported" after s/w update

MarcS9653 — Thu, 09 May 2024 12:41:17 GMT

Hi all, long time user, first time poster. Just noticed my 48 SIM card all of a sudden has no connection. Tried restarting the phone to no avail. Also double checked the apn settings. All seems to be in order. My wife also has a 48 SIM card and hers is connected to 4G data and can makes calls/texts. I'm using a pixel 8. Any ideas how I can troubleshoot this?

Re: No connection all of a sudden

dalyer — Wed, 08 May 2024 18:56:24 GMT

> Any ideas how I can troubleshoot this?

Try your SIM in your wife's phone and vice versa and see what works/doesn't work?

With your SIM in your phone what does a manual search for networks show?

Can you see and reconnect to 48?

You might want to contact 48 support for further assistance.

See the links in my signature below.

Re: No connection all of a sudden

MarcS9653 — Wed, 08 May 2024 21:06:36 GMT

Thanks so much for your suggestions/quick reply. Tried my SIM in wife's phone, weirdly it worked fine! Also tried her SIM in my phone and it said "SIM type no longer supported". I then put my SIM back into my phone and it briefly flashed up with a message of "SIM not allowed".

When I do a manual search of networks I see no networks found (though before it had a few networks showing including the 48 one but refused to connect!).

Will report to the support email that you mentioned, thanks again

Re: No connection all of a sudden

dalyer — Wed, 08 May 2024 22:49:53 GMT

Did anything change on your Pixel 8 between when it worked and when it stopped working?

E.g. a software update or something?

As far as I know the Pixel 8 requires a class C/1.8 volt SIM and older SIMs may not work as they are of a different class/voltage.

But if it was working before and suddenly stopped then that's strange.

I would consider ordering a replacement SIM to see if that helps but that will obviously take a few days to arrive.

Re: No connection all of a sudden

dalyer — Wed, 08 May 2024 22:55:52 GMT

This seems to be somebody who had their Pixel 8 working fine for a while and then got the same errors after a software update:

https://support.google.com/pixelphone/thread/265421023/sim-not-allowed-and-no-service-after-android-update?hl=en

To be honest Google Pixel phones sound like a pain given this sort of stuff and the fact that they block 5G access for several Irish networks for no good reason.

Nearly as bad as iPhones and Samsung Galaxy phones for all the unnecessary problems that they cause due to the manufacturers' stupid policies.

Re: No connection all of a sudden

MarcS9653 — Thu, 09 May 2024 10:52:15 GMT

I did do a software update a couple of days ago. Possibly the latest android broke something? I was working for a good couple of months fine, so that's disappointing if that's the case. Will try ordering a replacement SIM (I also asked my question to 48 support but they said it would up to 7 days to get back).

Re: No connection all of a sudden

dalyer — Thu, 09 May 2024 12:55:40 GMT

You've nothing to lose by ordering a replacement SIM and seeing if that makes any difference when it arrives.

It sounds a bit like the class C/1.8 volt SIM issue but it's odd that it was working before if that was the issue.

Unless the software update somehow now insists on a class C/1.8V SIM and won't work with a higher voltage one or something.

Re: No connection all of a sudden

MarcS9653 — Thu, 09 May 2024 12:36:09 GMT

Will do, I did that fairly recently (about a year ago when 48 brought out the newer sims). But no harm in doing it again... I tried to contact pixel/google support, but they just said "contact your carrier". Thanks for your help!

Re: No connection all of a sudden

dalyer — Thu, 09 May 2024 12:57:51 GMT

Is it possible to downgrade to the previous version of the Google Pixel 8 Android software?

Re: No connection all of a sudden

MarcS9653 — Thu, 09 May 2024 13:12:13 GMT

Let me check that. I actually went as far as to try flashing a custom rom "grapheneOS", but it doesn't seem to have made a difference. Exactly the same error showing up "SIM 1 not allowed". I think grapheneOS is updated regularly with the same underlying android software. I will see if I can roll it back one update, good idea

Re: No connection all of a sudden

dalyer — Thu, 09 May 2024 13:14:32 GMT

It could be that the issue is due to the baseband firmware that interfaces to mobile radio hardware and this doesn't get updated by a third party custom ROM such as GrapheneOS.

Re: No connection all of a sudden

MarcS9653 — Thu, 09 May 2024 16:01:53 GMT

You may be right. I'm hoping I don't have to wait for another update from google. Hopefully the 48 team can help (will report back here if I hear back anything useful or get it resolved). Also ordered the replacement SIM. I still have my old oneplus 6T which I am using as a backup (the 48 sim works perfectly in it).

Re: No connection all of a sudden

MarcS9653 — Tue, 14 May 2024 15:15:11 GMT

Just a quick update. Unfortunately, I have been ping-ponged between 48 and pixel support a fair bit with no progress. I received a new replacement sim card, but made no difference. Google pixel support keeps claiming a new software update will be released "soon" or "within the next few days", but I am not sure!

Re: No connection all of a sudden

dalyer — Tue, 14 May 2024 15:35:54 GMT

Sorry to hear that you've made no progress.

Hopefully Google do issue an update that fixes the problem soon.

Did they explain what the problem is and if/how the previous software update caused problems?

Re: No connection all of a sudden

rut — Mon, 08 Dec 2025 22:03:13 GMT

Did you get it sorted, I'm having the same issue

Re: No connection all of a sudden

dalyer — Mon, 08 Dec 2025 23:09:53 GMT

Have you tried a replacement SIM first in case it's the class C/1.8V issue and your current SIM is only class B/3V?

https://community.48.ie/t5/The-Knowledge-Base/Do-You-Need-a-New-SIM/ta-p/8487

If you need to contact 48 support about this then see the links in my signature below.