[initplus]

The reason it took so longe is because carriers are still involved with RCS, and carriers suck.

Every successful messaging protocol aside from SMS does so by routing around the carrier and sending messages over data. iMessage, WhatsApp, telegram, signal etc.

[emayljames]

Yeah, although I do like RCS, for instance my network dragged their heals in updating to latest specs and was always broken and patchy at best, until they just gave up and handed all their RCS infrastructure over to Google to run directly. Networks are surprisingly bad at implimenting tech.