my iphonefacebook screen froze and went grey

Hi Lostinmyownmind,

Thanks for contacting Apple Support Communities!

We understand that Facebook stopped responding while you were using it.

This is a great resource to help you to troubleshoot an app that stops responding: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open - Apple Support

1. Force the app to close. Then open the app to see if it works as expected.

2. Restart your device

Restart your iPhone or restart your iPad. Then open the app to see if it works as expected.

3. Check for updates

To see if updates are available for the app, open the App Store, tap your profile icon, then scroll down to see if updates are available. If updates aren't available for the app, update the software on your iPhone or iPad.

4. Delete the app, then redownload it

Delete the app. When you do this, you might lose data that was stored in the app. Then redownload the app. Then check to see if the problem with the app is fixed.

Get more help

If the App Store itself is not responding, contact Apple Support for your iPhone or for your iPad.

If you found the app on the App Store, contact the app developer. If the app is made by Apple or came with your iPhone or iPad, contact Apple Support for your iPhone or for your iPad.

If you bought the app recently and you no longer want it, you can also request a refund.

We hope this helps.

Cheers!