Anyone Know Why?

Check your WiFi Router / Modem for --> Recommended settings for Wi-Fi routers and access points ...

Connecting to Wifi is the first part and then getting connected to the Internet is the second

1. If you connect to Wifi, doesn't necessarily mean you are connected to the internet. If you are not connected to wifi could be a problem with iPhone settings or Router/Modem Settings
2. If you are not connected to the internet is the sole issue of Router / Modem Settings. Contact your ISP immediately

For your Internet connection.

• Over Cellular: contact your Carrier (Cellular Service Provider). The agency who issued the SIM to you
• Over WiFI: Contact your ISP (Internet Service Provider), the agency who provided the Internet Service on your Modem/Router to you

However --> Connect iPhone to the Internet - Apple Support

TopNot wrote:

This is NOT a network issue. It happens regardless of whether I am on Wifi or cellular and on ALL wifi networks including my home one, which has excellent bandwidth and wifi coverage.

1. Restart your device: Try restarting your device to see if that resolves the issue. This can help clear any temporary errors that may be causing the problem.
   1. Restart the device. That's it.
   2. Still not solved --> Force restart iPhone - Apple Support

1. Clear the Facebook app cache: Clearing the app cache can often help resolve issues with apps. To do this, go to your device's settings, then to the Apps or Applications section. Find the Facebook app and tap on it, then tap on Storage. From there, tap on Clear Cache.
2. Update the Facebook app: Make sure that you have the latest version of the Facebook app installed on your device. You can check for updates in the App Store (iOS) or Google Play Store (Android).
3. Uninstall and reinstall the Facebook app: If none of the above steps work, you may need to uninstall and reinstall the Facebook app on your device. This can help resolve any issues with the app's installation or configuration.

Facebook is not an Apple product. Contact the app developer here --> App Support or Facebook Help Center | Facebook