Can only get 2G or 2.5G on Fastweb SIM

[emewu]

REPRODUCIBILITY: 100%
OS VERSION: Sfos 5.2.0.17
HARDWARE: Jolla Phone 2026
UI LANGUAGE: US EN
REGRESSION: no way to check

DESCRIPTION:

I have a Fairphone 4 that manages to get 4G signal with my Fastweb SIM in Italy (should be 5G but the carrier said something about the phone only being designed to get “fake” 5G or something, I don’t know too much about this stuff).

The same SIM can only get 2G or 2.5G signal on my Jolla Phone, I tried both Automatic and Manual network selection.
I also can’t get mobile internet connection.

PRECONDITIONS:

A Fastweb SIM card, a Jolla Phone 2026, default Cellular Network settings.

STEPS TO REPRODUCE:

1. Be in Italy (not sure if actually needed?).
2. Insert SIM card in the phone, it can be turned on or off.
3. Wait for the phone to detect a Network automatically (takes quite some time for me).
4. See that the network is 2.5G.
5. Try changing network manually, you’ll only get “Connection to network failed” or a 2G network.

EXPECTED RESULT:

The phone connects to 5G network, or 4G at least. Mobile data works.

ACTUAL RESULT:

The phone connects to 2.5G network. Mobile data doesn’t work.

MODIFICATIONS:

Nothing from OpenRepos.
Added the gesture to quickly get back to the previous open app via long horizontal edge swipe.
Chum Installed.
Android AppSupport enabled, Aurora and F-Droid installed (problem happens whether AppSupport is active or not).

ADDITIONAL INFORMATION:

This is the only thing keeping me from daily driving my Jolla Phone.

[ric9k]

I had the same situation with Jp2 while roaming in spain.
No way to get more than 2.5G.
Manual and automatic network selection.

[sznowicki]

Same here in DE with Telekom SIM card.

[emewu]

Adding some screenshots of the issue, hoping they could help someone diagnose the issue, maybe my access point is wrong? I’m desperate

Also tried Automatic, no changes

Sometimes the network goes away completely and with cellular data active I’ll be prompted to select a SIM for the mobile network. I select my SIM and nothing changes.

Do let me know if anyone has any idea about tests I could run to find out the problem!

[nthn]

The access point is definitely wrong - it’s what gets filled in by default if your provider isn’t in the database, but it’s non-functional because it doesn’t point to a server.

Looking at the Fastweb website, the connection name should be ‘FW WEB’ and the access point name should be ‘apn.fastweb.it’. Have a look if that fixes it.

[emewu]

Thank you very much!

I tried setting those values and tested some more, unfortunately it doesn’t seem to make a difference

Also tested Prefer 4g and all manually selectable networks

[sznowicki]

I know it sounds silly but having the same issue, just with Telekom DE, I replaced my SIM card with a new one, and then after few hours still being stuck with 2.5 which almost made me sell the phone (or send it back) I went to a nearby city and it magically switched to 4G/5G and stays like this since.

Maybe replace your SIM card.

[emewu]

Damn sounds silly but seems to work!
I had to travel today and brought my jolla along to experiment, put the SIM in on the train and it worked!
First time I’m able to be on mobile data, thanks a lot!

[sznowicki]

It must be something in a direction of tower handshake caching or similar. I can imagine that during the first boot it failed to go higher and thst tower maybe remember that which got invalid ony after switching.
Pure speculation.

[roccapl]

I solved for FASTWEB/ITALY by doing these steps

1. setup Punto di Accesso Dati (the APN settings)
   Nome connessione / Connection Name
   FW WEB
   Nome punto d’accesso / Access Point Name
   apn.fastweb.it
   Protocollo / Protocol
   Dual
   Sicurezza / Security
   Nessuno / None
   Autenticazione / Authentication
   Nessuno

Then TURN OFF THE PHONE and turn it on again.