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If you still need our assistance after that, then fill up our Highlighted below are a few recommended procedures and potential solutions you can try on if your Messenger app stops working or keeps crashing after installing a new i OS update on your i Phone X. The recent changes from the new i OS update might have caused the Messenger app to become a little bit glitchy in its first run so try to quit and restart the app.
It’s also possible that any of these background apps is the trigger especially when they’re crashing.
If clearing the app doesn’t help, you can proceed with a soft reset or simple reboot your i Phone X the usual way.
For example, a swipe to the left will give you a menu button, a mute button and a delete button.