iOS 18 brings RCS to major carrier iPhones, but prepaid plans are still waiting

Enlarge / Illustration of a person who refuses to check their iPhone’s messages until RCS is enabled on their MVNO carrier, out of respect for their Android-toting friends and family. (credit: Getty Images)

The future of inter-OS mobile messaging is here, it’s just unevenly distributed.

With iOS 18, Apple has made it possible for non-Apple phones to message with iPhones through Rich Communication Services (RCS). This grants upgrades from standard SMS text messages, like read receipts, easier and higher-quality media sending, typing indicators, and emoji/response compatibility. More than that, it allows for messaging while on Wi-Fi without cellular services and makes group messages far less painful to navigate and leave. Notably, RCS messages between iPhones and non-iPhones will not be encrypted, like Apple’s private iMessage service available exclusively between Apple devices.

iOS 18 makes these RCS upgrades possible, but certainly not guaranteed, at least as of today. Lots of people have already been enjoying cross-platform RCS messaging when texting with iOS 18 beta users. And iPhones on the big carriers’ plans can now trade RCS with Android users. But some iPhone users, particularly on MVNOs—typically pre-paid services that do not own network hardware but resell major carrier access—do not have an RCS option available to them yet.