Why my Ipad don't detect WIFI networks?

In the WIFI Settings options, I can't turn WIFI on because the option is never kept. No WIFI networks are detected. What's the problem?
Thanks for your help.

First try resetting your iPad: press and hold the Home + sleep/wake buttons until the Apple logo appears.
Now follow these Wi-Fi troubleshooting steps:
http://www.apple.com/support/ipad/assistant/wifi/

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MacBook Pro Retina stopped detecting wifi network in one location.

Hey everyone, experiencing kind of a weird problem and was hoping someone would be able to help. I was doing some studying at a Starbucks, connected to their WiFi network when randomly my computer lost connection to their network and was no longer able to detect that it even exists. I was worried this was some sort of problem with my wifi card as it could no longer detect any networks nearby, where as before it was detecting multiple networks in the area of the Starbucks. Oddly i was still able to connect to the network on both my iPad 2 and iPhone 4S. Upon returning home I was relieved to find that I was still able to connect to my home wifi network. Since then i've been to many locations with my laptop but not once had an issue connecting to or detecting wifi networks, with the exception being at that Starbucks location. I've returned many times hoping that the problem would somehow fix itself, and that maybe it was just a problem with their network, but that doesn't seem to be the case. It seems to be that for whatever reason something happened to the MacBook pro while I was at that Starbucks location that has caused it to no longer detect the wifi networks there, and only there. One possibility could be the I updated Mountain Lion to the 10.8.2 supplemental update while there, but I don't see how that would cause the problem. If anyone has any ideas as to a solution that would be greatly appreciated.
Thanks in advance!

I considered the network hog point, but I don't believe that I was using any excessive amounts of bandwidth. Also, because I can no longer detect any networks at the Starbucks location (not just the Starbucks network) I don't believe that this is the problem. Also, when I updated the operating system I was sure to disconnect from wifi first, I had already downloaded the update on my home network, just had yet to restart to install it, so my security shouldn't have been an issue either. How exactly can I go about masking my MAC address so I could double check to see if it was the network issue?
Oh, also, I booted into Windows 7 via boot camp and for some reason Windows is also unable to detect any networks while at Starbucks as well, which is even more confusing. I don't know if it's worth mentioning, but I bought this MacBook pro retina in Canada and am now in There UK for school. I've heard that north American macs don't play well with one of the network channels that is commonly used over here, so that also may play a role in all of this. But considering that I was able to consistently use their wifi for a couple weeks with no issue, I don't see how that could be the problem. As far as WEP encrypted goes, the network is unsecured so I don't believe that's the problem.
Thanks for the response, I appreciably appreciate it!

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cheeku2000 wrote:
my iPhone 6 is not detecting wifi network, i already switched off and on.
thanks
Switched what off and on, Wi-Fi in Settings, the iPhone, the router? See this support document about troubleshooting Wi-Fi connections. If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support

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Hi;
Why my Ipad 1 loose wireless wifi setting for around 5 minutes ...it is not wireless issue as i have strong coverage all around the room.
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Hi there,
Wi-Fi connectivity has been known to bug iPad users since launch, and I understand that Apple are fighting to fix this. You can take a look at the link below, which may help troubleshoot the issue.
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You can also provide feedback to Apple at the below site.
iPad feedback
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After I factory reset my Iphone 4s, I can't finish the step where it ask for WIFI Network, I guess it don't detect WIFI and can't connect to iTunes also. What should I do?

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I, on the other hand, can not see or connect to our network at all. However, I am able to see other WiFi networks.
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-Throughout all this, the router is sat on top of the set top box, which is sat on top of the TV. I move the router down so its sat next to the TV and a plant. I'm able to see and connect to our network with no issues.
-Three weeks later, the problem has returned. I can't see our network but my flatmates aren't affected.
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This is what MacStumbler sees when my Mac is situated a couple of feet from the router in the front room:
http://farm4.static.flickr.com/3051/2308676274_00f5eba51c.jpg?v=0
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http://farm4.static.flickr.com/3184/2308733380_dcdc2faccd.jpg?v=0
The SpeedTouch signal strength is obviously not as strong but still reasonable. I don't seem to have any issues anymore; I can see, connect and stay connected to our network with no real problem - but I haven't changed any settings on the router.

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I don't know how to block the other wireless access points to show on the list, but from what you said, you want to let it connect to one of your preferred network whenever one is available, connect it automatically.
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copy what it returned.
mine returned:
AirPort preferences for en1:
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in Terminal, run the following command:
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Explain a little bit.
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you can get the details of airport command by run:
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/airp ort
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my 3 month old ipad2 has stopped detecting any wifi network. It just happened all of a sudden, the device has iOS5.1. the internet worked fine till one dy when the battery dropped to 4%, i charged the next day and no internet since then.
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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
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
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
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-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
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
 Cheers, Tom

Brand new MBP rarely detects Wifi network- 4 other devices have no problem

I am using a 4-week old MBP with Lion that was installed via the App Store immediately after purchase.
I read up on the Wifi issues with the MacBook Pro / Lion but mine seems a bit different.
Once I get connected to Wifi, the connection doesn't drop and is not weak, however, getting the connection is the problem. Airport detects my network off the bat only about 50 percent of the time. I live in a city with about 20 networks available at any given time. When I click on the airport icon, the same 4 networks (not mine) appear immediately every time. After waiting or re-clicking, if I'm lucky mine will show up in the list after about 20 to 30 seconds, but sometimes it doesn't show up at all. Restarting the router doesn't seem to help. Sometimes rebooting the computer does, and once in a while after a reboot my MBP will find the network immediately and auto-connect... when it does that the pages load at lightning speed and it works great until the next disconnect (when it sleeps).
Could this be my router just being too old for my MacBook Pro? My iPhone, iBook, PowerBook G4 and Asus laptop have no problems.
I've tried changing the broadcast channel on the router, deleting the plists frequently mentioned in these forums, deleting and re-adding the wireless connection (many many times), moving WLAN up to the top of the list in Network Prefs, updating router firmware, routing through my iPhone (no problem)...
Please help! Should I take it back to the store for an exchange? I bought it in the US and live in Germany... not sure I can even do that.

System Preferences > Network > Airport/WiFi
Even if WiFI is at the top, use the gear below the list of Interfaces to choose "Set Service Order" and put Airport/WiFi at the TOP. This will make a big difference.
Click ( Advanced )
In the WiFi/Airport pane, be sure the Networks you most want to join are listed at the top of the list, and feel free to delete any you don't care to join automatically. Once you have a good list, check [√] Ask to join networks (rather than just joining them).
In the TCP/IP pane, set IPv4 to DHCP and set IPv6 to OFF or Manually OFF.

Why my Ipad don't detect WIFI networks?

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