VERY unstable WiFi connection Xperia Z2 5.0.2

Hello,
For some reason my wifi connection is either very slow, or there isn't any connection. And when it does connect, it is REALLY slow, and then it drops.
I get really frustrated because on my other devices such as an asus notebook and a Samsung tablet it works like a charm.

I notice the same thing with the latest firmware (28) sometimes while connected to my home wifi network. When I'm outside, my phone will show a full connection, or 3/4 bars, but there's no Internet access. If I toggle wifi off and on, it sometimes kick starts it, sometimes doesn't do anything. When I'm inside, I have no issues. It's almost as if the wifi icon is buggy. As if it doesn't show a true reading of the wifi signal strength.

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I hope my contacts dont mind me posting this.
Latest Firmware- 1.0.2.4 (was 1.0.2.3)
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22032             Guest user is able to execute print secure settings link and email system summary link
22206             Configuration file name field in Advanced DHCP Configuration page is not having limit for maximum characters
23100             If SLA ID is set to "0", router is not forwarding IPv6 packets to "sit0" interface.
23245             Device not accepting ASCII Characters After F (G to Z) in WEP Key.
24313             Critical error observed when trying to delete the default vlan and clicking on save button for the second time
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Message was edited by: Dominic Pfisterer

Welccome to the discussion area, Dominic!
With the explosive growth of wireless networking and other wireless devices like cordless phones, it's unfortunate that wireless interference is causing so many issues for users.
You are probably picking up interference from another nearby wireless network, security system or cordless phones. Because of the intermittent nature of your issue, cordless phones might be the first suspect since conversations start and stop. Most cordless phones operate on the same 2.4 GHz frequency that most wireless networks use. I had to get rid of mine since they were causing too many problems for my wireless network.
To give you an example of the difficulties that cordless phones can cause, my neighbor...across the street...can literally bring my wireless network to a crawl and sometimes a crash if he's in his front yard talking on his cordless phone.
If you have cordless phones, keep them as far away as possible from any routers or computers. You won't be able to do anything about an offending phone at the neighbors, unfortunately.
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AirPort Utility > Manual Setup > Wireless tab (below the icons) > Channel.
Message was edited by: Bob Timmons

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Take the applicable steps in this support article. The Wireless Diagnostics program generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 2
Disconnect all USB 3 devices. If you don't know which are USB 3, disconnect all USB devices except keyboard and mouse.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. If you find that Wi-Fi works better with Bluetooth disabled, you should use the 5 GHz Wi-Fi band. Your router may not support it; in that case, you need a new router.
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Open the Network pane in System Preferences and make a note of your settings in the Wi-Fi service. It may be helpful to take screenshots of the various tabs in the preference pane. If the preference pane is locked, unlock it by clicking the padlock icon and entering your administrator password. Delete Wi-Fi from the service list on the left by selecting it and clicking the minus-sign button at the bottom. Then recreate the service by clicking the plus-sign button and following the prompts.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.

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SOLVED
iPhone 4 wasn't having any joy (and neither was my new 4s).
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Regards
RB

Why my wifi connection is unstable? I have an ipad 4 wi-fi and my net connection only works very close to my router!

My wifi connection only works well if i am really close to my router. My notebook connection runs great either close or far from the router! What can i do about that? Thank you!

Some things to try first:
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~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
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http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
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~~~~~~~~~~~~~~~~~~~~~~~
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
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/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
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
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://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.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

Very slow/stalling wifi connection on iMac

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I have tried browsing apple support for help, and found advice to adjust MTU in AirPort settings, and I experimented with various DNS, but niether of these seems to help, my web-browsing and page loading times seem to have improved, but downloading files is still almost impossible. The problem si very frustrating, since I get reliable speed and connection on my lenovo PC on the very same spot as the iMac.
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Thanks, I appreciate all suggestions!

Hello,
Is that Interface dragged to the top of Network>Show:>Network Port Configurations and checked ON?
The Interface that connects to the Internet, needs to be drug to the top of System Preferences>Network>Show:>Network Port Configurations and checked ON.
10.5.x/10.6.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
The interface that connects to the Internet should be dragged to the top of the list.
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208.67.222.222
208.67.220.220

VERY unstable WiFi connection Xperia Z2 5.0.2

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