2️⃣ Once you’re in the Google Messages beta channel and with the latest available app version in front of you, we need to update a typically invisible Android element called Google Play Services to make sure you’re on the most recent version of that as well. Google Play Services powers a lot of important processes and works hand in hand with apps like Messages to make certain features, including this new Enhanced Protection option, available.
To manually apply the latest Google Play Services update, head into your system settings and search for the word play. Find the item in the results labeled “Google Play system update” — then tap it, tap the line that says “Google Play system update” on the screen that comes up next, and wait for the system to find and apply any available updates. You’ll probably be prompted to restart your device after any updates are made.
Now take a deep breath: You’ve got all the related elements up to date and ready, and all that’s left is to find and opt in to the actual Messages Enhanced Protection feature.