If you do a search on the internet, you will find lots of suggestions on how to fix issues with Facebook Messenger crashing in the newly released iOS 11. If you have downloaded the most recent version of Facebook and Messenger from the App Store, restarted your iPhone or iPad, and even deleted the Facebook and Messenger apps from your device only to find Messenger STILL won’t launch, here is a how-to for desperate cases (aka: being thorough).
Follow these instructions in this exact order.
- Go into the Facebook App. In the lower right, tap “More” (it looks like three bars), and scroll to the bottom and LOG OUT of Facebook. If you still see your picture, hit the settings in the lower left and completely log out. If it asks you to verify, confirm it. You want to be completely logged out.
- Delete the Facebook App.
- Delete the Messenger App.
- Do a two-button reset on your device. On an iPad, you hold down the power button and the Home button at the same time until the appears, the release immediately. On newer iPhones with the haptic feedback, you hold down the power button and the volume down button. Again, keep holding it until you see the logo, then promptly release.
- Log into your device.
- Let it connect to the Wi-Fi or cellular signal.
- Download Facebook and Messenger, but don’t open either yet!
- Let the apps fully download.
- Open the Facebook app. You should NOT be met with your profile photo if you logged out correctly from Step #1. Put in your log in info / log in.
- If Facebook loads normally, launch Messenger. At this point, you should be met with your profile photo.
Since you completely logged out and the stored information was deleted, it may take several minutes for your old messages and profile photos of your friends to load. This is to be expected. Let it do its thing. You should be able to tap a message and read/reply at this point.
This is a thorough way to fix a problem with Facebook and Messenger on your device. If the problem persists, contact Facebook and report the problem through the Facebook app. The problem likely has nothing to do with your device or iOS update.