Using wifi causes router to lose connection - One (M7) Q&A, Help & Troubleshooting

At first I thought I may have had a faulty device, but I've been messing around and testing things, and I've concluded that my phone is causing my wifi router to lose connectivity. If I turn the wifi off on my HTC the router works fine with all other devices (laptop, iphone5, google tv) but once I turn the wifi on I lose connection briefly. I connect to wifi fine and my router shows a stable connection, but as soon as I start to browse or stream anything I will lose connection for about 20 seconds across all devices. I'm not too knowledgeable when it comes to networks, so I'm a bit dumbfounded. I've tried changing DNS servers, set IP to static, reserved DHCP in my router settings, but nothing is working. Does anybody have any suggestions?

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[Q] Connecting to home wifi network with repeater.

Has anybody had any success with this? I have a wireless N router and just got a wireless N repeater in my home.
My captivate will connect just fine to the network when the repeater is unplugged. However, when I plug in the repeater my phone's wifi connection starts to act funny. I connect to the wifi and have a very strong signal, but I am unable to do anything on the internet. Web pages won't load, Pandora won't connect.
Long story short, the phone sees the network, but it doesn't know whether to communicate with my router or my repeater.
All other wireless devices on my network seem to work fine with the repeater, it's just my Captivate that is having this problem. I have no other phones to test it with, though.
Are you running stock? I seem to recall it having an issue with netmasks that weren't 255.255.255.0. You may want to check netmask in both the router's settings and the phone's Wi-Fi settings to ensure they match.
Is your NAT filtering turned off on both devices ?
Thanks! I'll look into both of these options when I get home tonight.
I'm not running stock, I'm running Cognition v2.3b6, btw.

Droid can't see wifi router

I have an unrooted OG Droid running on stock Froyo (2.2.3). It's off-contract, but I have been using it by connecting to my wifi router (Netgear WNDR3700). Everything has been working fine until Friday when it stopped connecting to my wifi router. I tried reconnecting, but it cannot seem to find the router at all, even if I'm standing right next to it. My router does not appear on the list of available wi-fi networks when I look at Settings -> Wireless & networks -> Wi-fi settings. The strange thing is that it seems to pick up all of the other wi-fi networks from my neighbors without any problems; it just can't seem to find my wifi router.
All of my other Android devices (Nexus S, Evo 3D, Galaxy Tab, Logitech Revue) can find and connect to my router without any problems. It's just as though the router doesn't even exist from the perspective of the OG Droid. I haven't made any recent configuration changes on any of my devices or router. My other wi-fi devices (laptops, printer) don't have any issues finding and connecting to my router either.
I've tried rebooting, pulling the battery, etc. without any luck. Any ideas?
By chance did you unplug the router, my og DROID loses wifi sometimes and even though phone sees it won't connect but usually resetting router gets it to reconnect.
Sent from my Droid using XDA App
KJW979 said:
By chance did you unplug the router, my og DROID loses wifi sometimes and even though phone sees it won't connect but usually resetting router gets it to reconnect.
Sent from my Droid using XDA App
Click to expand...
Click to collapse
I haven't done that yet, because as far as I can tell, the router is working fine. The issue that I'm seeing differs from yours as the phone doesn't even see the router right now.
It's a bug in Android. Delete all the remembered wifi accounts on the phone and then you should be able to scan again. Once you scan, it should pick up the router again. Had this happen on a couple different android devices.
atom bomb said:
It's a bug in Android. Delete all the remembered wifi accounts on the phone and then you should be able to scan again. Once you scan, it should pick up the router again. Had this happen on a couple different android devices.
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Click to collapse
I gave this a try, but it didn't work. I can still see all of the other available wi-fi networks near me, but not my own router. Any other thoughts?
mdwstrnkid said:
I gave this a try, but it didn't work. I can still see all of the other available wi-fi networks near me, but not my own router. Any other thoughts?
Click to expand...
Click to collapse
I've had this with my router whenever i reset it.
its because there are too many routers in your area on the same wifi channels . change the channel your router is on until its one with less or no routers on it and it will appear eventaullly.
mdwstrnkid said:
I have an unrooted OG Droid running on stock Froyo (2.2.3). It's off-contract, but I have been using it by connecting to my wifi router (Netgear WNDR3700). Everything has been working fine until Friday when it stopped connecting to my wifi router. I tried reconnecting, but it cannot seem to find the router at all, even if I'm standing right next to it. My router does not appear on the list of available wi-fi networks when I look at Settings -> Wireless & networks -> Wi-fi settings. The strange thing is that it seems to pick up all of the other wi-fi networks from my neighbors without any problems; it just can't seem to find my wifi router.
All of my other Android devices (Nexus S, Evo 3D, Galaxy Tab, Logitech Revue) can find and connect to my router without any problems. It's just as though the router doesn't even exist from the perspective of the OG Droid. I haven't made any recent configuration changes on any of my devices or router. My other wi-fi devices (laptops, printer) don't have any issues finding and connecting to my router either.
I've tried rebooting, pulling the battery, etc. without any luck. Any ideas?
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Click to collapse
I have same problem with you.
My LWW cannot find/detect the home wifi, but another device (laptop and samsung galaxy mini) can work well with the wifi network.
but my LWW can find another wifi network except my home network. but sometimes when I don't use the LWW for long time, and when I started to turn the wifi on, it can work well. but after I stopped the connection and start to use the wifi again, it cannot find the network again
I just had the same problem and fixed it.
Sometimes routers are configured to select and use the less crowded wireless channel. That can cause your wifi to eventually use channel 12 or 14. Like sleepyguy007 said, it is more likely to happen if there are too many wifis in the area and all channels are crowded.
As far as I know, Android devices are by default configured to scan only up to channel 11. So if the wifi is in 12 or 14, it will not be recognized.
Go to the wifi config screen, where all the networks are listed. There, with the menu button, go to "Advanced"->"Regulator domain" and set Android to scan all 14 channels, that should do the trick.
I hope that is the cause of the problem and you can fix it... Otherwise it could be a bug, and the solution may be harder
I'm so happy & surprised!!!
I had same problem and with your helps(phobophille & sleepyguy007) my problem solved:laugh: :fingers-crossed: :good:
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XPERIA Arc S
my device is not showing any network on my device to connect wifi.
i have tried everything but the problem is same . not a single network is appearing in my device. all others are connected to the same. in my phone in advanced setting it is showing ipv4 address is unavailable. plz suggest something.

My Razr i makes WiFi drop/crash

Hi folks !
Recently I started to experience some troubles using my WiFis connections. The problem is simple, the connection drops, the WiFi network disappears from all the devices, and a few seconds later it comes back.
At first I thought it was a problem with the router of my work. But then I started to experience the same things at home. Then I decided to test the WiFi without connecting my Razr i to it and it worked like a charm. Now, as soon as I connect my Razr i to a WiFi, it crashes a few seconds/minutes later and keep doing it until I disconnect my phone from the WiFi.
Did someone experience the same thing ? Have you any idea for solving the problem ?
Thanks anyway.
PS : I only use 5Ghz WiFis. I'll try with 2.4 soon but the 5Ghz compatibility was one of the reasons why I bought this phone...
We have also issues with our WLAN at home, which is sometimes (but not always) very unstable in connection with a Samsung 5 Laptop (regular reboots shortly after activating the laptop Wifi).
I did not experience this problem yet with my Razr i, but I will keep it in mind over the next days (we have a complex setup with several computers, phones and Android entities based around a Fritzbox 7390, so error identification and validation takes very long and is not finished yet).
BTW - if you look for help here, please specify your WLAN router in detail as well as your provider and general IT-setup.
Tevac said:
We have also issues with our WLAN at home, which is sometimes (but not always) very unstable in connection with a Samsung 5 Laptop (regular reboots shortly after activating the laptop Wifi).
I did not experience this problem yet with my Razr i, but I will keep it in mind over the next days (we have a complex setup with several computers, phones and Android entities based around a Fritzbox 7390, so error identification and validation takes very long and is not finished yet).
BTW - if you look for help here, please specify your WLAN router in detail as well as your provider and general IT-setup.
Click to expand...
Click to collapse
Well ! Thanks for the reply.
My router that provides the two WiFis is a Cisco Linksys WRT61N.
My setup is kinda complex but works well. Got another router provided by my ISP, which is the DHCP server. This router is connected to a port of the WRT61N switch. Not to the internet port. Every connection that enters in the ISP router goes to the Linksys, and then is NATed by it. I don't think those informations are very relevant but anyway here they are. That's a complex setup but it works well (needed to do that because I have cable connection, and the cable modem/router have very limited configuration).
The devices that use my two WiFi are :
2.4Ghz : My Razr i right now.
5Ghz : Two iPads, and the HTC 8X of my girlfriend.
I made some other tests, one the Razr i there is an option for switching on or off a kind of network frequency. So instead of both enabled, I enabled only the 2.4Ghz WiFi frequency and connected my phone to my 2.4Ghz WiFi. No problems detected. Stable connection. Right now I'm at work, and everything works well in 2.4Ghz. So there is clearly a problem with the 5Ghz frequency on my Razr i.
Anyway, during those tests, I discovered something very interesting. My battery life had a huge improvement with the desactivation of the 5Ghz WiFi frequency.
Thanks for the details - especially on the 2.4/5 GHz topic.
I am also at work right now, but will check it at home and keep you posted.
WPA2
I had the same problem, I think it was triggered everytime the phone went to "sleep". It was changing the security encryption that fixed it for me. I can't remember what i had on the router as default, and I'm not at home right now to check what I'm running, but I believe it's WPA2. After the change, I had no trouble whatsoever. Hope this helps, good luck!
EDIT: nevermind what i said, i just logged into my router and remembered it wasnt the encryption type settings, but rather the wifi standard used, it used to be 802.11 b+n+g, and now i got it sitting at 802.11 b+g, which equals to 2.4 GHz. Meaning the razr has apparently a problem with the 5 GHz spectrum..
I too have a RAZRi which is connected by wi-fi at home to a Fritz!Box 7390. I noticed that when the RAZRi went into sleep mode with wi-fi connected (keep wi-fi on setting) it would have lost any internet connection on waking, requiring a disconnection/reconnection to reset. More annoyingly there was also a loss of connection (IP address) at laptops also connected to the router by w-fi on both 2.4GHz and 5GHz connections, which needed a reboot of either the PC or the router to re-establish a connection. The router GUI would show them all as remaining connected.
By using the manual setting on the router to restrict 2.4GHz connections to b+g (not b+g+n), it looks so far as though both problems are avoided, and the RAZRi can be set to use either the available 2.4GHz or 5GHz (a+n) connection on the Fritz! successfully without problems. EDIT big problem is though that disabling "n" on 2.4GHz seems to cause wi-fi throughputs to crash by more than 50% on both frequencies (which for me negates the benefit of having VDSL) - they recover if I re-enable, but then the lockups start if the phone is connected. A hobsons choice.
Thanks guys.

[Q] Switching between routers within the same wifi

Hey guys, I got a problem with wifi on my One. The thing is I got a couple of wifi routers in my house (one can't cover the entire building) and they're both broadcasting the same SSID, password etc. basically one is connected via RJ45 to the other and set up exactly the same way. Problem is when I move around the house and lose connection to one of my routers and the phone automatically connects to the other all my connections on the phone stop working and I have to turn my wifi off and on again. Same thing happens when I'm at my university, each floor has 2 wifi routers on it and phone tends to jump between them screwing up the internet connection each time. I know it might not be the biggest issue in the world but still it's quite annoying especially since my old SGS didn't have this problem. My phone is not branded and of course up to date. Thanks for any advice.
theleet said:
Hey guys, I got a problem with wifi on my One. The thing is I got a couple of wifi routers in my house (one can't cover the entire building) and they're both broadcasting the same SSID, password etc. basically one is connected via RJ45 to the other and set up exactly the same way. Problem is when I move around the house and lose connection to one of my routers and the phone automatically connects to the other all my connections on the phone stop working and I have to turn my wifi off and on again. Same thing happens when I'm at my university, each floor has 2 wifi routers on it and phone tends to jump between them screwing up the internet connection each time. I know it might not be the biggest issue in the world but still it's quite annoying especially since my old SGS didn't have this problem. My phone is not branded and of course up to date. Thanks for any advice.
Click to expand...
Click to collapse
From my experience after installing a lot of different wifi's in different operation modes, it all depends on how exactly the routers have been setup.
But to answer your initial question- the topic at hand; as long as the wifi's broadcasts the same SSID, you cannot choose which of the two individual routers you want to connect to. Please someone correct me if I'm wrong, but afaik this is not possible. If you want the possibility to choose, then set them up with different SSID's. This would be the _easiest_ solution, just make sure they broadcasts at different frequencies with at least 5 channels apart, i.e. channel 1 and 6, or 6 and 11, or 1 and 11. These are the most popular ones in the 2.4 GHz spectrum. If you use 5 GHz you have a lot more to choose from.
Now, if it's important that your network works seamlessly (with the same SSID), I can provide a step by step guide upon request.
But the solution to your current problem, from my experience; yes you have to turn the wifi off and then on again to "force" the wlan-card on your cell phone to -faster- connect to the closest router, otherwise it will take maybe 15-45 seconds before it does this automatically. It's basically the same with computers. This mostly happens if the wlan-card are within range of both networks, but it will try to stay connected to current one before changing.
And there are some important guidelines to follow when you connect one router to another if they are from the same brand (because of the ip-range and gateway). I once had to setup 8 wifi-routers in a house, because of the size and the thick concrete walls (same SSID)...
The problem is my laptops and other phones don't seem to have this problem, also the phone doesn't 'fix' itself after 40 or so secs it just stays broken as far as I've noticed forever (or at least till i leave my house). Also it doesn't have a problem connecting to the other router, it loses connection, looks for available networks, finds my other router, connects and... nothing works. Exact same thing at the university, finds routers, connects with 5/5 bars and it just doesn't work.
theleet said:
The problem is my laptops and other phones don't seem to have this problem, also the phone doesn't 'fix' itself after 40 or so secs it just stays broken as far as I've noticed forever (or at least till i leave my house). Also it doesn't have a problem connecting to the other router, it loses connection, looks for available networks, finds my other router, connects and... nothing works. Exact same thing at the university, finds routers, connects with 5/5 bars and it just doesn't work.
Click to expand...
Click to collapse
Are you sure you have it setup with DHCP and not some static ip-settings? Can you post some screenshots of your wifi-settings?
If you haven't tried already, get your phone to "forget" it's settings so you have to reenter the password and make sure it's set to DHCP. But first take out the power from both your routers so they get a reboot, and make sure the ethernetcable is connected from one of the LAN ports on the main router connected to the internet (from your cable/dsl/fiber-modem), and in to the WAN/Internet port on the secondary router. Btw what routers do you use as master and slave?
Yes of course I have the routers set up just like you say And yes I'm using DHCP on both of them. They are Airlive 1600GL with tomato rom as main and WR740N as secondary. I took screenshots of what seemed relevant sorry the main router's settings are not in English but it seems that would require me to reflash it with a different rom.
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-22-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-00.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Untitled.jpg
theleet said:
Yes of course I have the routers set up just like you say And yes I'm using DHCP on both of them. They are Airlive 1600GL with tomato rom as main and WR740N as secondary. I took screenshots of what seemed relevant sorry the main router's settings are not in English but it seems that would require me to reflash it with a different rom.
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-22-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-00.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Screenshot_2013-12-20-23-24-28.png
https://dl.dropboxusercontent.com/u/2668574/HTC One/Untitled.jpg
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What's with the DNS being 8.8.8.8 and 8.8.4.4?
Seraphicus said:
What's with the DNS being 8.8.8.8 and 8.8.4.4?
Click to expand...
Click to collapse
These are Google DNS.
I would do it simple and solve it by changing the SSID on the slave router to something different, like wireless2, and change channel to 1. Or change the channel on the master router from 8 to 11. Your phone will probably change from one network to another faster this way, or it's at least easier for you to manually choose.
If that doesn't help, and the network is 100% problemfree for other wireless devices, I guess it must be a firmware or hardware problem with your One's wlan-card. Most likely firmware.
I will try it in the morning but still I'm pretty confident it's not the matter of setting up my home network but rather One's software bug. I can't say with 100% certainty right now but I don't remember having this issue before the update to the newest Android version.
Both routers need to be on the same subnet, enable dhcp server on one and disable it on the second one. Also set the second one as an access point only with a static ip in the same subnet.
The problem you have now is that wireless clients must negotiate a new ip when switching routers because of different subnets assigned to each.
Let me know if you need more details.
But still that would fix the problem at my home, what about when I'm somewhere else?
What ROM are you running? I leave wifi enabled all the time and haven't had any issues moving between networks, it automatically connects when another network is in range.
Android 4.3 with Sense 5.5 all stock not even rooted.
Since your completely stock it should just work. I'd try fixing the home network first and see if that solves the issue at home, then move on to trying to figure out the network issue at school.
Router1 - master
Internet connected to wan port
Cable from lan port to a lan port on router2
Dhcp: enabled with an ip range of 192.168.1.100 and up
Lan ip 192.168.1.1
Channel 1
Router2 - slave
Nothing connected to wan port
Cable from Router1 lan port to lan port on this router
Dhcp: disabled
Lan ip 192.168.1.2
Channel 11
Set ssid and wpa settings the same on both routers.
With this setup clients can hop from one access point to the other without a dhcp request or ip change, should switch within seconds.
cschmitt said:
Since your completely stock it should just work. I'd try fixing the home network first and see if that solves the issue at home, then move on to trying to figure out the network issue at school.
Router1 - master
Internet connected to wan port
Cable from lan port to a lan port on router2
Dhcp: enabled with an ip range of 192.168.1.100 and up
Lan ip 192.168.1.1
Channel 1
Router2 - slave
Nothing connected to wan port
Cable from Router1 lan port to lan port on this router
Dhcp: disabled
Lan ip 192.168.1.2
Channel 11
Set ssid and wpa settings the same on both routers.
With this setup clients can hop from one access point to the other without a dhcp request or ip change, should switch within seconds.
Click to expand...
Click to collapse
Tried that setup for many times over the years I've worked with routers, from my experience that is unstable.

Anyone getting wifi issues? I stay connected but can't pass any traffic

I have been having issues where i am connected to the wifi but the device stops passing any traffic. I have fing installed and i can't ping any other devices on my network. I know its just my phone because i have my work phone and tablet connected to the wifi and they still work fine browsing webpages, watching movies etc while the droid turbo can no longer communicate with the local lan or out to the internet. If i switch the wifi off then on again it will reconnect and then work normally. I can then ping devices on the local lan and access pages on the internet. This has happened a number of times now since i got the device.
Edit: I just updated the phone and still get the issue. I have a cisco WAP at home, we have cisco WAP's at work which i will test tomorrow. If this thing still has issues i am just going to swap it out for a Note 4.
Check this out:
http://forum.xda-developers.com/showthread.php?t=2925844
I've been seeing issues with Cisco wlans too.
Sent from my XT1254 using XDA Free mobile app
so it looks like it works good at work, something with my home cisco ap and this phone as all other devices at home work ok.
-magnum- said:
I have been having issues where i am connected to the wifi but the device stops passing any traffic. I have fing installed and i can't ping any other devices on my network. I know its just my phone because i have my work phone and tablet connected to the wifi and they still work fine browsing webpages, watching movies etc while the droid turbo can no longer communicate with the local lan or out to the internet. If i switch the wifi off then on again it will reconnect and then work normally. I can then ping devices on the local lan and access pages on the internet. This has happened a number of times now since i got the device.
Edit: I just updated the phone and still get the issue. I have a cisco WAP at home, we have cisco WAP's at work which i will test tomorrow. If this thing still has issues i am just going to swap it out for a Note 4.
Click to expand...
Click to collapse
Yeah this phone does not seem to like my router for some reason. Keep in mind I'm not a networking expert, but I've tried every combination of options and settings every which way from Sunday and I just can't get the thing to work. When I do connect the phone to my wifi it kills the the connection on every device in the house. At first I though it was just a wireless thing, but even the downstairs computer which is plugged in directly to the router doesn't work. Then as soon as I disconnect the phone every device works again. I thought maybe there was too many devices, so I disconnected all but the downstairs computer, still had the issue when I connected the Turbo. I've tried just turning off the WPA2 and just having an open system, I've tried connecting the phone using a WPS pin (This one actually worked for a good 5 minutes before crapping out and hasn't worked since). On the advanced options of the phone I tried an automatic IP as opposed to the default DHCP setting (This also worked for a good 5 minutes before not working ever again). I've tried limiting it to just one frequency band. I have tried so many different things and I just cannot make this phone work on my router. And I know it's my router because the phone works fine at work.
phone: Droid Turbo
Router : Asus rt-ac66r
yup within ten minutes of getting home, the device no longer passes traffic. My work S5 still works fine at home and so does my samsung tablet. The device worked on wifi all day at work on our enterprise wpa2 network no issues. I tried doing static ip at home, changing to 2.4 ghz, trying new ssid. Not sure what else to do with this thing...
Not just you
I posted a comment on Motorola's forum where people are discussing their wifi issues... And my work around. I currently beleive its a software issue and can be fixed via update. Also, today I found (it appears) that the longer the phone goes without a reboot, the shorter amount of the it appears to go with out needing the wifi card reset.
https://forums.motorola.com/comment/829632
My work around fix...
First, over night my wifes phone now behaves just like mine. It now connects to wifi and after sometime passes it no longer passes data (but stays connected). I needed a way to auto disable/enable the card... I installed Tasker. I have it set to check every 15 minutes, if the phone is connected to WiFi, to disable then enable the WiFi card. I use WifiMatic to enable the wifi card when the phone is connected to the cellular tower that is near my house. (Doing this by GPS uses more battery power...) Using Tasker with the rule to verify its connected to wifi first helps not enabling wifi if its nit needed and lets WifiMatic enable/disable it as needed.
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