Q: My Iphone 5s will not connect with Facebook or Twitter over WiFi.

Hello LesRS,

Thank you for using Apple Support Communities!

It sounds like the wifi on the phone is acting a little odd when trying to use the Facebook and Twitter websites. I suggest these troubleshooting steps outlined in the article named:

iOS: Troubleshooting Wi-Fi networks and connections

http://support.apple.com/kb/TS1398

1. Be sure you're in range of your Wi-Fi router (access point).
2. Tap Settings > Wi-Fi and turn Wi-Fi off and on. If your W-Fi setting is dimmed, follow these steps.
3. Confirm that your Wi-Fi router and cable or DSL modem are connected to power, turned on, and connected to the Internet. If not, refer to your network administrator or Internet service provider (ISP) for assistance.
4. Restart your iOS device.
5. Tap Settings > Wi-Fi and locate the Wi-Fi network to which you're connected.
6. Tap and Forget this Network.
7. Try to connect to your desired Wi-Fi network.
   Note: You may need to enter your Wi-Fi password again if your network requires one.
8. Turn your Wi-Fi router off and on². If your ISP also provides cable or phone service, check with them before attempting this step to avoid interruption of service.
9. Update your device to the latest version of software.
10. Update your Wi-Fi router to the latest firmware². For AirPort Base Stations, install updates using the AirPort Utility.

If the issue persists, then I would recommend these steps from near the bottom af the article:

If you do not have a self-assigned IP address, see if other Wi-Fi devices on your network have Internet access.

• If they do not, consult with your network administrator or ISP for further assistance.
• If they do, reset network settings on your device by tapping Settings > General > Reset > Reset Network Settings. Note: This will reset all network settings including:
  • previously connected Wi-Fi networks and passwords
  • recently used Bluetooth accessories
  • VPN and APN settings

All the very best,

Sterling