Yes because RCS is a Google/Android messaging protocol that Apple has reluctantly adopted after pressure from the EU. Android uses the Google or Samsung RCS servers to operate but Apple has made the protocol and servers carrier specific.
If you go to settings, apps, messages, there is no option to use RCS under the text messaging option. What you are describing is MMS which is the old protocol to send photos via text messaging. When I insert the EE SIM card the RCS option appears wit...
