To my understanding XMPP has nothing to do with SMS-messages - or does it? I’m not referring to similar messaging via other channels but specifically SMS-messages. Not having RCS on L5 in the near future may become similar to L5 only being able to use BT1.0 and not BT5.x or only being able to watch .avi and not anything newer (mkv, h.2xx etc.).
Is RCS compatibility a modem issue (feature) at all?