Graphene OS intermittently fails to ring for incoming calls

GrapheneOS
A Google software update caused the issue
A Google software update fixed the issue

My phone was working fine until March 13
My phone was broken after March 14
My phone was working fine again after April 22

I'm not sure where a carrier bug fits in here sir/mam. It feels like it was more of a modem bug introduced by an UPDATE (March 14) and not a change in my carrier. The Apr 20 update, which had the vendor update to AP1A.240405.002.B1, seems to have fixed that modem bug.

I'm not very tech literate, so please forgive me if we are both talking about the same thing and I am being too dense about it, but it felt like you were denying that the March Google Update was not responsible for the issue.

Again to be clear, I am not saying it was a Graphene issue or anything. It clearly was an upstream problem given the amount of non-GOS users facing this issue.
I'm a big fan of all the work you folks do and I love using the OS. Thank you!

jagorom515

You know what they say.

Walks like a duck, quacks like a duck, it’s a carrier issue.

Just today my 6a experienced the "call straight to voicemail" problem and also could not make or receive any calls. I have ONLY one profile and am updated to the latest OS version. This is the first time I have ever seen this. I just Reset Mobile Network Settings ( Settings/System/Reset Options/Reset Mobile Network Settings) then rebooted the 6a and everything worked properly.

I experienced this 3 times this week. I reset the network settings and didn't touch it since. But today I got 2 calls from same guy. 3 minutes apart. 2nd one was not received. I'm on newest gos version. Pixel 8

brookie229 hi i tried your method, worked with the previous version, 1 week no issues, then updated to 06500 and back to no calls, phone is 8Pro

Same issue for me, clean install pixel 8 pro. I can make calls but when trying to call the phone, no ringing, no notification, nothing, just goes directly to voicemail.

So after trying to get the phone working every which way I knew I ended up returning to stock Google build, tested phone and it worked immediately, flashed lineage, worked immediately and has continued to. Is there an actual known issue that I can keep an eye on the change logs to know if/ when it's fixed?

I've had intermittent issues with incoming calls this month.
Not sure if might be something to do with adding more user profiles or my carrier who recently sent me a new SIM.

New build was released I see, noting in the change logs about phone not working but was wondering if anyone has tried it? My issue was incoming calls wouldn't work at all which is a piety basic requirement for me. If the new build solved the issue I'd love to hear that.

I have the same issue. No wifi calls enabled, signals strength very good. Call goes straight to voicebox even when the phone is unlocked. I get a message from the carrier about a missed call half an hour later. This occurs very rarely so it's hard to track.

Ducter lineage

It's my understanding that they're behind on updates and their patch level isn't exactly 100% accurate, so it's possible that a new bug was introduced at some point by upstream AOSP that just isn't in LineageOS. The reason I think it's unlikely to be because of a change GrapheneOS made is because GrapheneOS, to my knowledge, hasn't changed any code that would affect this sort of thing.

I am sure people want this fixed, but it's not really possible for the developers to troubleshoot and fix a problem when they don't know how to reproduce it. I'd help if I could, but I seem to always get notified of all incoming calls, even if I actually end up ignoring all of them.

other8026 I agree that it is difficult to fix right now. But I hope you agree that we should not prioritize issues on how easy they are to fix. The priority should be how severe the problem is and this one is rather high. I use my phone for business so if a call does not go through I may loose a client.

In cases like this one it's sometimes needed to improve diagnosing. I.e. we would be interested on any carrier message about missed calls where at the time of the call the signal strength was good.

I can also see in the list of carrier messages that I had the first occurence of the problem on January 26th. It occurred four times since. That's not a lot but still cumbersome.

Same issue 2 days ago call right to voicemail I thought this was fixed now have to check phone every 1/2 hour or so, I was doing this in March and April because was happening a bunch of times. No Wi-Fi calling just the straight up dialer that comes with OS. This is the most basic function of a "cell phone". It happens sometimes but once is to much and when u think it's fixed starts again. Can't be carrier cause were all on different ones in different countries. I don't get many calls at all so for me having it happen; must be brutal if u get a volume of phone calls coming in on a regular basis. This needs to get fixed.

I'm not sure if being on graphene and then getting an update maybe makes the missed calls random or what but for me, clean install and it happened every time. Couldn't get the phone to ring at all. If it was random, happening seldomly maybe I wouldn't have noticed right away but as a small business owner every call is important.

I know a few weeks ago lineage had to do a hard pause for several weeks while rebasing so perhaps it is an upstream issue that they fixed or something... Idk. Hopefully the graphene team can figure it out.

Happens here too, Pixel 7. Never bothered to report it as I just call back but today happened twice.
Wifi calling disabled.

Can someone remove the solved tag please?

Can anyone advise if either of the last 2 stable releases addressed the issue?