I am unable to connect to my Wi-Fi at home, but am able to connect at work. Using my new iPad 4G with cellular and a Motorola SBG6580. My iPad 3G Wi-Fi only connects just fine; the 4G just "spins the gear."

Some things to try first:

1. 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.

2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.

3. 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

4. Go into your router security settings and change from WEP to WPA with AES.

5. Renew IP Address: (especially if you are droping internet connection)

• Launch Settings app

• Tap on Wi-Fi

• Tap on the blue arrow of the Wi-Fi network that you connect to from the list

• In the window that opens, tap on the Renew Lease button

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iOS 6 Wifi Problems/Fixes

Fix For iOS 6 WiFi Problems?

http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/

Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It

http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug

How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6

http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html

iOS 6 iPad 3 wi-fi "connection fix" for netgear router

http://www.youtube.com/watch?v=XsWS4ha-dn0

Apple's iOS 6 Wi-Fi problems

http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/

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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

WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/

How to Fix: My iPad Won't Connect to WiFi

http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm

iOS: Connecting to the Internet http://support.apple.com/kb/HT1695

iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199

How to Quickly Fix iPad 3 Wi-Fi Reception Problems

http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/

iPad Wi-Fi Problems: Comprehensive List of Fixes

http://appletoolbox.com/2010/04/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 Issuehttps://discussions.apple.com/thread/2398063?start=60&tstart=0

How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issuehttp://tinyurl.com/7nvxbmz

Unable to Connect After iOS Update - saw this solution on another post.

https://discussions.apple.com/thread/4010130

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.

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If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.

 Cheers, Tom 😉

Renewing the lease worked Tom. Much obliged partner!

So weird… 😕 I think Comcast San Francisco coincidentally upgraded the firmware (thanks for prohibiting me from managing my own firmware! 😐) on my Motorola SBG6580 to 3.5.8.2-GA-00-488-NOSH around the same time my iPad mini stopped being able to join my Wi-Fi network at 2.4 GHz. I systematically tried:

• Power cycling the router
• Toggling Wi-Fi on the iPad mini
• Power cycling the iPad mini
• Resetting Network Settings on the iPad mini
• Toggling WPA2-PSK security
• Changing the Network Name (SSID)
• Toggling 802.11 "n-mode"
• Toggling 802.11 "N Support Required"
• Toggling Bandwidth between 20 and 40 MHz
• Changing Control Channels
• Toggling STBC Tx
• Toggling WMM Support (Apple recommends to leave it enabled)
• Erasing All Content and Settings on the iPad mini

The only change that reliably lets my iPad mini join my network now is to use the 5 GHz band, which gets less penetration so I may have to reposition the SBG6580… 😝 Anyhow, I thought I'd share my experience since I didn't find any solid solutions online, but did find lots of rampant speculation (e.g. Apple IPv6 conspiracy 😁).

P.S. I guess I should add that my iPad mini works with IPv4 just fine. 😉

Changing the channel from 11 to 6 actually worked for me. Oddly enough the problem was that only my iPhone would not connect, but other Macbooks, Kindles, iPhones, game consoles all worked. I could see the SSID pop up but it wouldn't take my password. Bizarre! Thanks though!

The Genius Bar reflashed my firmware to 6.0.1, but it still didn't work. (We did figure out that my iPad mini could connnect to a 2.4GHz Wi-Fi network without password protection.) I also tried iOS 6.1 beta 4 to no avail. Thus, the Genius Bar wound up replacing my iPad mini with a new one that works great.