messanger vs iOS 11

when my friends complained of having problems using their
messanger app after the iOS update...
I Researched some solutions... hope this helps

Make sure Facebook Messenger is not running in the background. If it is
close it, as it will always check for new updates and add new cache.

try to:
Clear App Caches
Open Facebook Messenger on iPhone, Tap on More at the right corner of the screen > Settings > Account Settings > Browser > Clear data.
Remove Facebook Account and Sign in Again
On iPhone, go to Settings > Facebook > Tap on your name > Tap Delete
Account. After you’ve deleted your account, enter your information, sign in
again, and open the Facebook app.
Uninstall & Reinstall Messenger App
Press and hold on the Messenger app until it starts to wiggle. Tap the gray X in
the upper left-hand corner of the app icon, and then tap Delete. Then go to App
Store or Safari to reinstall Messenger app.

then UPDATE FB MSGR

On your iPhone, go to Settings > General > Software Update to check if
Messenger app update is available. If your Messenger crashes too often, you can
connect iPhone to computer and use iTunes to update it.
For iPhone 6s and earlier model users, press and hold both Sleep/Wake and Home
buttons for at least ten seconds until you see the Apple logo.
For iPhone 7/7 Plus users, press and hold both the Sleep/Wake and Volume Down
buttons for at least ten seconds until you see the Apple logo.

to summarize:

Uninstall Fb then uninstall messenger then hard reset then reinstall

NOTE: I dont use iOS and never owned an Apple device. I searched for this
solution hoping to solve my friends fb messager problems, if this solution
worked for you pls share.if not, let me know Ill look for another way to solve.

Hope this helps.
this is your LOVERBOY Dennis Signing out.