The new update has plagued many of the devices with wi-fi issues. The most common issue is not being able to connect to the network after updating to iOS 7. This should fix all basic wi-fi connecting issue.
Fixing Wi-Fi Connection Issues
1. Settings > Airplane Mode > Turn On
2. Settings > General > Reset
3. Reset Network Settings
5. Restart the router and disable Airplane Mode. The device should now be able to connect to the network.
I’ve tried both separately when my WiFi went out in the past but the same problem came back within a day. The next time it goes out I will try both at the same time. I will let you know the results.
WORKED FOR ME THX!