[SHIFTphone 8] No cellular reception

Basic info

• Device: SHIFTphone 8.1
• CalyxOS version: 6.6.21

Brief description of the issue

Using a Vodafone Germany SIM, I'm getting prompted to enter the SIM pin, but after unlocking the SIM, there's no cellular reception and no provider info on the lockscreen.

Additionally, there's only 3G and 4G in the prefered network type setting, although the SHIFTphone 8 also supports 5G, not sure if that's related.

Screenshots (if any)