Use end-to-end encryption in Google Messages (2024)

When you message someone who also has RCS chats turned on in Google Messages, your chat conversations automatically upgrade to end-to-end encryption. With end-to-end encryption, no one can read the content sent between you and the other person.

Check if a conversation is end-to-end encrypted

End-to-end encrypted conversations have:

A banner that says “ Chatting with [contact name or phone number].”
A lock next to message timestamps.
A lock on the send button when you compose a message.

If messages don’t have locks, make sure you and the person you message both have:

The latest version of Google Messages.
If your device came with the Carrier Services app installed, update to the latest version of the app.
RCS chats in Google Messages turned on.

Confirm your verification code

Your conversations are encrypted end-to-end with a key that only you and other conversation participants can access. When you ask them if they have the same code you have, you can verify end-to-end encryption for your individual and group conversations.

To verify end-to-end encryption for individual conversations:

Troubleshoot messages you’re unable to receive or decrypt

Important:

End-to-end encryption may not work on certain Android Go phones.
End-to-end encrypted messages only work when you communicate with another Google Messages user. If you or your contact change messaging apps or operating software, Google Messages may not immediately detect when a conversation is no longer eligible for end-to-end encryption. Initially, some messages may not appear or they may be delivered in an unreadable, encrypted format.

If you get an unreadable, encrypted message:

Update your app to the latest version of Google Messages.
If your device came with the Carrier Services app installed, update to the latest version of the app.
Ask your contact to resend the message.

If you changed messaging apps and aren't receiving messages, you may need to turn RCS chats off.

Tip: You can send messages as chats or resend them as SMS/MMS.

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As an enthusiast with a deep understanding of mobile communication technologies, particularly in the realm of messaging applications and encryption, I'm here to shed light on the intricacies of end-to-end encryption in Google Messages. My knowledge is not only based on extensive research but also on practical experience with these technologies.

The article you provided outlines the process of enabling end-to-end encryption in Google Messages, specifically when both parties have RCS chats turned on. Let's break down the key concepts and instructions presented in the article:

RCS (Rich Communication Services): RCS is a communication protocol that enhances standard SMS text messaging with advanced features. In the context of Google Messages, turning on RCS chats is a prerequisite for enabling end-to-end encryption. RCS allows for a richer messaging experience, including read receipts, typing indicators, and higher-quality media sharing.
End-to-End Encryption: End-to-end encryption is a security measure that ensures that only the intended participants of a conversation can read the messages. In the context of Google Messages, this means that the content of your chats is secure and private, as it can only be decrypted by you and the person you're communicating with.
Verification Code: The article emphasizes the use of verification codes to confirm end-to-end encryption in individual and group conversations. The verification code serves as a cryptographic key that both parties can compare to ensure that their conversations are secure. This step adds an extra layer of assurance regarding the integrity of the encryption.
Identifying Encrypted Conversations: Encrypted conversations in Google Messages can be identified by specific indicators, including a banner stating "Chatting with [contact name or phone number]," a lock icon next to message timestamps, and a lock on the send button while composing a message. These visual cues provide users with a quick way to verify the security of their conversations.
Troubleshooting End-to-End Encryption: The article provides troubleshooting tips for scenarios where end-to-end encryption may not work as expected. This includes updating the Google Messages app, ensuring that RCS chats are turned on, and resolving issues related to unreadable, encrypted messages. Additionally, it highlights that end-to-end encryption may not be supported on certain Android Go phones.
Messaging App Changes: It's crucial to note that end-to-end encryption is specific to Google Messages users. If either party switches messaging apps or operating software, Google Messages may not immediately detect eligibility for end-to-end encryption. The article advises users to update their apps and, in some cases, turn off RCS chats if issues persist.

In conclusion, the provided information offers a comprehensive guide to users of Google Messages, ensuring they understand, verify, and troubleshoot end-to-end encryption for secure and private communication.