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

Update] This app sends Android texts as blue 'iMessage' bubbles

Google drops Chat for RCS on Android - PhoneArena

Why Google Hangouts is irreplaceable to me - Android Authority

WordPress.com owner buys all-in-one messaging app Texts.com for $50M

What is Google Messages and how to use it - Android Authority

Google Talk - Wikipedia

Comparison of user features of messaging platforms - Wikipedia

Chinese Spy Operation Placed Fake Signal Apps on Google Play Store, Samsung Galaxy Store

Messaging Services Bypass the Old SMS Route - The New York Times

Android 11 beta features: conversations, notifications, and making sense of complexity - The Verge