Merge pull request #234687 from Justinha/rcs

Rcs

Author: Court72

articles/active-directory/authentication/concept-authentication-phone-options.md

@@ -6,7 +6,7 @@ services: active-directory
 ms.service: active-directory
 ms.subservice: authentication
 ms.topic: conceptual
-ms.date: 01/29/2023
+ms.date: 04/17/2023
 
 ms.author: justinha
 author: justinha
@@ -44,7 +44,11 @@ Microsoft doesn't guarantee consistent SMS or voice-based Azure AD Multi-Factor
 
 ### Text message verification
 
-With text message verification during SSPR or Azure AD Multi-Factor Authentication, an SMS is sent to the mobile phone number containing a verification code. To complete the sign-in process, the verification code provided is entered into the sign-in interface.
+With text message verification during SSPR or Azure AD Multi-Factor Authentication, a Short Message Service (SMS) text is sent to the mobile phone number containing a verification code. To complete the sign-in process, the verification code provided is entered into the sign-in interface. 
+
+Android users can enable Rich Communication Services (RCS) on their devices. RCS offers encryption and other improvements over SMS. For Android, MFA text messages may be sent over RCS rather than SMS. The MFA text message is similar to SMS, but RCS messages have more Microsoft branding and a verified checkmark so users know they can trust the message.
+
+:::image type="content" source="media/concept-authentication-methods/brand.png" alt-text="Screenshot of Microsoft branding in RCS messages.":::
 
 ### Phone call verification