RCS Messaging in iOS 18: What iPhone Users Need to Know MacRumorsHow to Download iOS 18 Beta 3 on Your iPhone Right Now CNETRCS on iPhone rolling out to more carriers with iOS 18 beta 3 9to5MaciOS 18 developer beta 3: What is new in Apple’s platform update for iPhone Business StandardRCS update standardizes message replies, editing, reactions, more for Android & iPhone 9to5Google