If you are still using Messenger Lite
you will see a message in the app that says "Use Messenger to keep chatting." You can tap the "Switch to Messenger" button to download and install the Messenger app.
To uninstall Messenger Lite from your Android device, follow these steps:
1. Open the Google Play Store app.
2. Tap the three lines in the top left corner of the screen.
3. Tap "My apps & games."
4. Find Messenger Lite in the list of apps and tap it.
5. Tap "Uninstall."
6. Tap "Uninstall" again to confirm.
If you are unable to uninstall Messenger Lite, you can try restarting your phone. If you are still having problems, you can contact Meta support for assistance.