When iOS 18 ships later this year it will bring support for RCS to the iPhone for the first time. RCS will allow iPhones to send and receive rich messages with Android devices and function similarly to iMessage, but some people report that they're seeing RCS-like behavior with older versions of iOS as well.
Read receipts are part of the RCS specification and they're one of the features iPhone owners are already looking forward to when chatting with their Android-toting friends and family. But some people say that they are already seeing SMS messages marked as "read" even when using older versions of the iPhone's operating system and long before iOS 18 ships to the public.
