Losing mobile network/having to restart sim card/phone

RaskGrevling

Hi,

An update or two ago my phone started losing contact with my sim or something like that. The same thing happened with my wifes GrapheneOS phone at the same update.

All of a sudden the phone will not be able to make or receive calls or SMS. In the beginning I had to restart my phone when this happened, but I figured I could just turn my SIM off and on again. But this is extremely frustrating. Now I go around restarting my SIM every now and again just in case. I need to be reachable by phone and this makes it so that I cant receive calls and wont notice it until I try to make a call. When I turn my sim off and on or restart my phone I dont get any information about missed calls in the period either even though people told me they tried to reach me.
Theres no other indication from the phone that I loose the ability to call or receive calls. I can still use mobile network for browser, signal, etc. Just not calls or texts.

Any way to fix this? And again, my wife has the same problem from the same update and she has a Pixel 8 Pro, so its not a hardware issue.

Would greatly appreciate help with this

sturdy_vanilla

RaskGrevling I'm seeing this too on my 6a. I have an e-SIM and a physical one from the same carrier and both of the SIMs goes to zero bars and a message about emergency calls is displayed. I also toggle the SIM on and off, but rebooting the device seems to actually help for a.while.

I also got newer pixels, but they are not affected. I run the latest version of.alpha in all of them.

sturdy_vanilla

RaskGrevling I chose the System > Reset options > Reset Mobile Network Settings and I haven't experienced any connectivity outages today. Even the missing phone number now appears in the SIM details.

Quantum

RaskGrevling

Im experiencing the same as you. I don't mean to out you or me, but its an important fact that we are both norwegain(atleast i assume you are).

4g or data works fine. The problem happens when I try to send a message it just says failed to deliever or send. Calling takes you to the call screen, but makes no noise. Calls can't get through to me either(same thing happens for them). It's like the phone isn't connected to the network, which is weird since data works fine. Another thing is that 4g calling does not work when this happens, but works otherwise.

Turning airplane mode on and off fixes the problem for some time. The problem started around maybe feb or march. Around the same time Ice was switching from Telia(sim carrier) to Telenor(sim carrier( as a backup for when their own signal might not be good enough to support proper 4g. I called Ice(the sim carrier) as this has been driving me mad. Missing a bunch of work texts or calls in general. They told me to turn on data roaming which seems weird as I've never had a problem with the connection or sim. The support tech said I've been using Ice 70% of the time and Telenor 30% of the time now.

Data roaming has helped, but it still happens, just not as often. It's like the phone keeps switching between Ice and Telenor. Before it only said Ice+ which is their grid. Now it just say Ice sometimes. This is their not modern grid I think which might cause compatibility issues resulting in messages disappearing or calls being missed.

I have tried to reset the data/sim settings.
My next step was to call them back up or try to send some logs to the Grapheneos mods or developers.

Bullion

Also having problems with 4G+ dropping and signal when an incoming call is coming in. Also happens on text

Quantum

@fid02 Sorry if you don't want me to mention this. You're norwegain too(I assume). Are you experiencing something like this and which sim carrier are you using?

fid02

Quantum Sorry if you don't want me to mention this. You're norwegain too(I assume). Are you experiencing something like this and which sim carrier are you using?

I'm using Ice with a physical SIM card and I have never experienced any problems on my Pixel 8. Calls seem to go through fine, I can receive and send SMS, mobile data is stable, and so on. Have used this SIM for over half a year. I keep my GrapheneOS up to date, currently on 2025041100.

I once had issues activating an eSIM with Ice, to which customer support told me "we don't support Pixel devices". They sent me a physical SIM and it has worked fine.

I'm not paying close attention to whether or not it's connecting to Ice or Telenor. Think it's connected to ice+ usually.

As a first measure, try System > Reset options > Reset Mobile Network Settings?

If that doesn't resolve it, try the SIM in another phone if possible?

Order a new SIM and see if that somehow resolves it? Might cost a few crowns but shouldn't cost a fortune? Might be less painful than the next suggestion…

I guess as a last measure, reflash to stock OS and see if the issue persists there?

Quantum

I'm using a pixel 8. Stable build(2025041100). Developer options turned on.

Sim settings:
Roaming on
MMS messages off
4g calling on
Prefered network type; 4g
Wifi calling off
Automatic selection for network
Allow 2g off

Quantum

The phone did the APN settings automatically. I can see it says the version of the carrier settings I have. 15.08.2024. Which would be before the switch to Telenor from Telia. Maybe I need to manually reenter the APN settings? I'll try to eject the sim and put it back in.

@matchboxbananasynergy
If I were to grab the system logs which way would be best in this case?

Send a message see that it fails to send. Try calling which will also fail. Turn on airplane mode then off. Send a message and call someone. Then capture the system log?

Quantum

Ejecting the sim didnt update the carrier settings. Maybe turning off automatic network selection, so its forced to use Ice+

Quantum

Just a quick note:

I'm pretty sure I got the new sim for free after talking to the support team.
With the old sim the disconnect would happen at random times with roaming on. Hours, days, weeks. So I'll update each week or if it actually happens. It's been fine so far.

fid02 I'm using Ice with a physical SIM card and I have never experienced any problems on my Pixel 8. Calls seem to go through fine, I can receive and send SMS, mobile data is stable, and so on. Have used this SIM for over half a year. I keep my GrapheneOS up to date, currently on 2025041100.

Keep in mind this quote from Fido too...
@RaskGrevling

Quantum

Thanks for the reply. Definitely helps youve got Ice too. @fid02
Ive already tried to reset it which didnt work. Though i didnt keep all the setting at the defaults after resetting.
I do have two pixel 8 phones so i could technically try it, but it would not be very practical since it might take long time before the problem happens. The other pixel isnt set up for daily use. Ill give that option a go later on if nothing else works.
Guess just getting a new sim would be fine. Ill give them a call after easter.

Note that ive never had a problem like this with this very sim card or this carrier across multiple phones. And it only started happening around the same time ice switched to telenor as a backup. Correlation? Hard to say.

Quantum

Would you mind telling me your sim settings? Where it says version of carrier settings, what date does it display? @fid02

fid02

Quantum Would you mind telling me your sim settings? Where it says version of carrier settings, what date does it display? @fid02

ice_no-64000000010.13
2024-08-15
MCC: 242 MNC: 14

Roaming: off
4G calling: on
WiFi calling: off
Choose network automatically: on

I always leave roaming off. I've never turned off Choose network automatically. I've never edited APN settings.

Quantum

Seems like a new sim card is the next step then. Cant really come up with many solutions since it doesnt seem to affect others.

Quantum

Thanks for the help so far @fid02
Ill update back here after a sim swap or if I figure something else out.

sturdy_vanilla

Quantum Maybe you could turn off developer options and see if that makes a difference? :)

Quantum

I knew that one was coming, but yeah I'll give it a go. Grevling and me are definitely experiencing the same symptoms. So either Ice are having problems with certain areas or we're both doing something wrong with our setups I'm guessing.

I'll be calling support tomorrow for my sim carrier to order a new sim and to hear if they can see anything again.

Quantum

Developer options are off now and I've done another reset for the sim settings only turning wifi calling off this time.

fraphene

I had the same problem two days ago.
Only with my e-SIM not with my normal SIM card.
What I did to solve the problem:
I completely disconnected the e-SIM from my device by indicating my provider that I was going to transfer it to another device.
Then I made the link again with my Google Pixel and the problem was solved.

Quantum

Right now its connected to just Ice, not Ice+. Every minute or so it loses the connection to the network completely(zero bars) before reconnecting to Ice again. As stated Ice+ is their modern grid, but I am on 5g on the Ice grid.