LTE works, GSM does not
01-08-2023, 08:19 AM
I have resolved this problem by switching to another carrier: ALDI Talk, which uses the Telefonica network, not the Telekom network.
Now everything appears to be working: I get 4G reception at home and voice, data and sms are working. If I use the mmcli -m 0 --set-allowed-modes=2g to enforce 2G, it does indeed use 2G and voice, data and sms are still working. I found working APN settings here:
https://www.apnsettings.org/germany/aldi-talk-de/
I still do not know why it did not work with Telekom but I have a workable solution now, so I am marking this as solved.
Now everything appears to be working: I get 4G reception at home and voice, data and sms are working. If I use the mmcli -m 0 --set-allowed-modes=2g to enforce 2G, it does indeed use 2G and voice, data and sms are still working. I found working APN settings here:
https://www.apnsettings.org/germany/aldi-talk-de/
I still do not know why it did not work with Telekom but I have a workable solution now, so I am marking this as solved.