I tried to send/receive SMS on ALDI Talk in Germany. It's not working, seems to setting the wrong SMSC number ( by the way also Phosh/KDE). How to set the correct SMSC number?
mmcli -m 0 --messaging-create-sms="text='Hello world',number='+336xxxxx89',smsc='+33695000695'" -v
After some investigation it seems that SMS sending is not working with provider O2 in Germany. IMS should be deactivated in 2G but still no solution in 4G. This issue can be closed.