User profile for user: rose_10 rose_10 User level: Community Specialist Mar 4, 2018 12:49 PM in response to tuyết70 Hey there, tuyết70! I see that your iPhone running iOS 11.2.6 is having an issue with Facebook. What happens when you try to use the Facebook app? If the app isn't responding like it should, I have some information in this support article that will help: If an app unexpectedly quits, stops responding, or won’t open Regards. Show more Less Reply Link