Deutsche Telekom

[einfacharthur]

Pixel 9 Pro, GrapheneOS.
Telekom MagentaMobil w/ 5G+ Gaming Option

It is working by setting"carrier_nr_availabilities_int_array" from "1" to "2".

VoNR is working, too.

[UltraHQ]

But you need to force NR only, because Telekom Network side forces fallback to LTE or NSA when trying to SA.
Which is very bad, because it will have instability (missed calls) and bad reception - you have no fallback when reception is bad.