You can make a difference in the Apple Support Community!
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
Please my iPhone 5s ISO 10.3.3 installed my Facebook.
Correction - you can update a 5S to iOS12.5.5. Once you have done that you can install Facebook. If you are getting the message that your iOS is up to date then you have a 5 not a 5S and a 5 cannot be updated further.
Correction - you can update a 5S to iOS12.5.5. Once you have done that you can install Facebook. If you are getting the message that your iOS is up to date then you have a 5 not a 5S and a 5 cannot be updated further.
The Facebook app requires iOS12.4 at least. You cannot run it on a 5S.
You don't have a 5s, you have a 5.
Facebook not installed
