IPad (especially iPad 2) issue with WiFi connection 1-minute delay after sleep or new connection

This is a tip and not a question.
I had a customer who was complaining that their iPad 2 would take about 1 minute before WiFi would work after coming out of sleep. They are on 5580 controller with 802.11n APs. If they took it home, it didn't have this issue. They also tried with iPad 1 and it didn't seem to have this problem. It was happening every time on iPad 2, wait until it goes to seep, then wait about a minute, then press home button, unlock and try to launch safari, it won't connect and wifi icon in the top bar is missing, 1 minute later wifi icon reappears and safari works. I was also able to reproduce it on iPad 1 and iPad 2 when creating new wifi connection in the settings, wifi icon wouldn't appear for about a minute.
After some 5580 controller upgrades, trying different wireless settings, researching on google, and capturing with AirPcap, I finally figure it out.
Once it comes back out of sleep or once the connection is created, iPad actually associates to the APs just fine and gets an IP address. You are able to ping it during that first minute of "outage" (when wifi icon is missing), but you can't use any network apps like Safari from the iPad during that minute. It turns out that right after getting IP address, iPad sends out DNS query for www.apple.com and then tries some HTTP query on 184.24.93.15 (www.apple.com). I didn't bother investigating what it's trying to do with that HTTP query, but it looks like if that TCP session is not established, you can't use wireless for about a minute. And indeed, my customer's firewall blocks HTTP traffic that's not coming from proxies. Once they opened HTTP traffic to 184.24.93.15 on the firewall, it fixed the issue, the wifi icon now appears as soon as iPad 2 comes out of sleep and Safari works. (They use it for intranet only in case you are wondering)
Hope this helps.

I saw on another discussion thread to shut down the hot spot (in my case my HTC Thunderbolt) for 10 seconds and then restart it. It worked and my WiFi downloads seem to be as fast as before. Thanks Philly_Phan.

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http://www.edugeek.net/forums/windows-8/128421-group-policy-logon-scripts-delayed-5-minutes-windows-8-1-design.html
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Hi @DmiBro,
Welcome to the HP Forums!
I see that you are having some wireless issues with your HP Deskjet 3545 to your Mac OS X 10.10 and Windows 7 computers. I am sorry to hear this, but I am happy to help!
I would recommend the following guides:
HP Single-Function and Multifunction Printers - 'Printer is offline' Message Displays on the Compute.... (The solutions for OS X v10.8 Mountain Lion and OS X v10.9 Mavericks will work on Mac OS X 10.19 Yosemite.)
HP Single-Function and Multifunction Printers - 'Printer is offline' Message Displays on the Compute....
HP ENVY 4500 and HP Deskjet Ink Advantage 3540 e-All-in-One Printer Series - Printer Does Not Mainta....
Tips for troubleshooting wireless connection issues
The following tips can help you troubleshoot and avoid wireless connectivity issues. You can try these tips separately or in combination to get a successful wireless signal.
Move the printer and the computer closer to the router, but no closer than 6 ft (1.8 m). Wireless signals can be weaker at greater distances between the printer and the router.
If you are experiencing an intermittent wireless connection, try restarting your router. Consult your router manufacturer, Internet service provider, or network administrator for instructions on how to restart the router.
Remove any metal objects between the printer, the computer, and the router. Objects such as refrigerators, microwaves, or metal bookcases can interfere with wireless transmission.
Move any device that emits radio signals, such as microwaves and cordless telephones, farther away from the printer. Such devices can interfere with wireless signals.
I would also recommend this website, HP Wireless Printing Center - Troubleshooting Issues.
Hope this information is helpful, and have a nice day!
RnRMusicMan
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos Thumbs Up" to say “Thanks” for helping!

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Thanks for the reply. What do you mean "2.4 GHz WiFi reliability is a hit or miss"?
Warranty is over so no problem there.
I see a lot of 7260 cards, is there one in specific I need? Example:
http://goo.gl/PKcRIU
http://goo.gl/ooaUEw
N would actually be fine, don't really need AC, recently upgraded my router and don't feel compelled to change...the price difference is small, and I'm all for future-proofing, but, I just need the thing to WORK.
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Everytime when i connect 3g internet with my laptop using USB (Windows 7) it creats new connection trailing network1, network2, network3.........

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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
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
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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. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
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How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
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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
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130?tstart=60
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.
 Cheers, Tom

IPad (especially iPad 2) issue with WiFi connection 1-minute delay after sleep or new connection

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