Anybody have a good source on what the heck RCS is? I've never heard of it until now. I will google also, but I bet someone knows of an introduction they'd recommend.
RCS is the legacy telcos ongoing attempt to try to somehow get into the messaging game that all of the Internet-based communications app are doing (WhatsApp, FB Messenger, Line, Kik, Skype, iMessage, etc.).
Basically, they'd like all their SMS revenue back!
it is an attempt to standardize what whatsapp made popular: instant messaging with authentication based on phone number.
the spec even includes the big-brother way of you having to hand over your contacts to pair the phone numbers to other users that whatsapp sadly made the norm.