Q: Since updating to IOS 8.1.3, iPhone won't connect to Wifi

Good Morning Denise -

Sorry to hear you are having issues connecting to your Wi-Fi network.  I'll include a few more things that you can try to troubleshoot this below.  The first thing that I'm wondering is if you cannot connect to your Wi-Fi at home -- are you able to connect to a different Wi-Fi network (at work, a local coffee shop, etc.)?  That would be one of the first things to try.

Turning the modem and router in your house of and then on is also a common step as it "reinitializes" everything.  Hopefully, one of the steps below will help you with this.

If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support
http://support.apple.com/en-us/HT204051

Restart.

For more help, try restarting your device, router, or cable/DSL modem. After each step, check to see if you fixed the issue.
  • Restart your iOS device.
  • Unplug your router and plug it back in.
  • Unplug your cable or DSL modem and plug it back in.

 

Still can’t connect?

Reset your Network Settings. Tap Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you’ve used before.

 

Get more help

• Try connecting to a Wi-Fi network in a different location. If your device can connect, you’ll need to get help with your Wi-Fi network. If it can’t connect to any Wi-Fi networks, contact Apple.

iOS and OS X: Recommended settings for Wi-Fi routers and access points - Apple Support
http://support.apple.com/en-us/HT202068

All the best,

- Judy