Exclusive: Chat is Google's next big fix for Android's messaging mess - The Verge

Google is trying a next texting strategy. Instead of trying to make Allo win, it’s going to partner with carriers to launch the successor to SMS, all so it can finally take on iMessage

Delete 'Go SMS Pro' From Your Android to Avoid a Huge Privacy and Security Bug

The History And Future Of Message Interoperability

iMessage - Wikipedia

Why Google Hangouts is irreplaceable to me - Android Authority

Beeper is kind of like Discord, but for everything - Protocol

Google Talk - Wikipedia

Ugh, Let's Talk About Google and RCS and Chat and the Death of Allo andUgh

Apple's iMessage not bothering with RCS. Android brings iMessage support to Google Messages instead. - Techzim

A decade and a half of instability: The history of Google messaging apps

Future Pixel phones won't get unlimited Google Photos - 9to5Google

Google Says It's Ready to Bring RCS to Your Phone, Carriers be Damned