@ravachol
Have you contacted Tre to see if the phone is blocked in some way?

@ravachol
The sad thing is that it is a hit and miss with the carriers.
Tele2 had working calls, sms, mms on pixel 3a before VoLte. I had to figure out the right apn settings because the recommended settings just worked halfway.
Check if there exists other values for the apn settings.

@ravachol
Make the first one only internet
And reboot the phone.

@ravachol
I suspect that there is something wrong with the apn settings. Do you have one apn for internet and one for sms?

@ravachol
Did phonecalls work when the phone was on Fairphone OS/Android?

@ravachol
I had the same problem as you on a pixel 3A but on Tele2.
Because the sms/mms works means that you have VoLte on the phone. Here comes the problem, you are missing Emergance Calls over VoLte and your phone is blocked from making any phonecalls both incomming and outgoing.

https://pts.se/internet-och-telefoni/teknikskifte/

Internet and sms/mms still works on the phone.

I don't know if it is a missing feature that needs to be implemented in UT or it is a limitation in the hardware.

@Charly
Have you tried this one:

https://open-store.io/app/futify.frenchutouch

I am using Tele2.
I installed Lineageos nightly on two of my phones and in the beginning I could make volte calls, but yesterday(I thinK) it dropped to 3g during calls.
I have checked in my pages at Tele2 and they have blocked the pixel 3a to use volte.
I am able to make volte calls on my pinephone using Mobian. But it is red-listed on my pages on Tele2, this means that the pinephone will be blocked 1 february 2026, I guess, it could be dropped 9 december too.
I heared somewhere that hey are doing the same thing in Australia, I have little to none information for the rest of Europe, how they implements volte emergency calling, or how they rules out the unsupported devices.

Hi
I have some news from Sweden regarding VoLTE
It's not enough to have VoLTE working on the phones. They need the capability to make emergency calls too.
This means that for example the pixel 3A, the Pinephone(Pro), will be blocked from calls/sms,mms because the lack of emergency calls. This effects these carriers:
Tre
Telenor
Tele2

Telia will keep their 2/3G networks until the end of 2027.

https://pts.se/en/news-and-press-releases/operators-must-ensure-access-to-112--certain-mobile-phones-will-be-blocked/

@newguy
Why don't install UT on a sdcard and upgrade it using apt? you won't break anything that way.

@O.o.
This might be of interest to you and your family:

https://forums.ubports.com/topic/10819/how-i-m-now-using-signal-on-ut/37

@Opolork
There is an app called Gotify on the app store. You need to set up a self hosted server. I haven't tried it myself but it looks interesting.

@atarilinux
I think that Alfred who maintains the port for this device mentioned something about VoLTE needs atleast Halium 10 to work. This port uses Halium 9.

Hi
I stumbled upon this projcet and wondered if there could be some sort of colaboration to bring Lomiri/UT to this device:

https://liberux.net/#home

It seems that they just got hold on some development pcb for the device.

@Moem
I had my first black screen in my camera app today. It hasn't done this for a long time. I needed to restart my phone only once to get the app to work again. No clue to what caused the app to crash.

I will eat my sock by Marius

https://ubports.com/blog/ubports-news-1/post/ubuntu-touch-q-a-58-79

We have really come a long way since then,

@Moem
I have now sent six pictures to myself without any problems.

@Moem
I was able to take a picture through Teleports and send it to myself without the camera app crashes.

@Moem
I started the camera app on 3 of my 4 pixel 3a in the household and they all works. I thought that maybe my phone is working differently because I'm using the latest drivers.

Hmm
There was an update too to the camera app, version 4.0.7, this could be the solution to the black screen too