iOS 6 Wifi Problems/Fixes
Fix For iOS 6 WiFi Problems?
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
Apple's iOS 6 Wi-Fi problems
Look at iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
Unable to Connect After iOS Update - saw this solution on another post.
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
I have the same problem since updating to iOS 6. It seems that it is a issue with the encryption or maintaining code. ipad worked great before the update. I removed the security on the network and it stayed connected. This is not affecting all iOS 6 devices and it is not my network as a friend stayed connected to my network. I wiped the ipad and restored the firmware through itunes but still the same problem. I have tried changing the network settings from AES to TKIP and did not work. I also tried changing to Auto as was suggested but did not work. I wish I could downgrade the iOS until Apple finally gets this figured out and provides patch/update.
I tried connecting to the network by selecting 'Other' instead of my wi-fi on the list. I entered my usual wi-fi name, then for the security I picked WPA and entered the password. It has been working since. The connection still drops and come backs but I can see all my notifications and since yesterday, I haven't had the need to re-enter my password. Let's see if it continues like this on Day 2.
As for the connection dropping, it sometimes does not even read the wi-fi signal. As in nothing shows up in my list, no possible networks to connect.