I have been around the block on this issue and it's incredibly frustrating. My phone operator doesn't know for sure what to do, and Sony says the issue is with my phone network. Singularly unhelpful, it won't even send me step-by-step instructions on what the procedure is for my Xperia 1 ii (not all phone manufacturers use the same methods for enabling and disabling RCS etc eg Samsung and Apple differ from Sony's approach, it would seem).
What I would like to know is whether anyone has resolved this issue (I cannot be the only Sony mobile owner who has ported their number across and prefers the RCS protocol over the inferior SMS/MMS application) and what the step-by-step methods are for achieving it and how long it takes to come into effect - I have consulted many a community forum and website, but as yet to no avail and I'm beginning to lose the will to live, ever so slightly!
Kind Regards
Chris
