No SMS 5G Standalone GL-X3000


I can’t receive nor send SMS over 5G SA. It is working fine via 5G NSA and 4G.

I have updated the modem to RM520NGLAAR03A03M4G_01.200.01.200, SMS still dead.

Carrier is O2 Germany using the N78 band with excellent connection. Carrier is allowing SMS in 5G SA.
Router FW 4.4.6


Tue Apr 23 19:44:08 2024 daemon.err modem_AT: (modem_AT.c:350) send_msg: AT+CMGS=XXXXXX
; len = 41

I think you got the answer in another post