[Q] Sudden slow wifi.... - Sprint Galaxy S 5 Q&A, Help & Troubleshooting

I couldn't find another thread for this phone specifically, so here's the thing. Recently, my s5 just started acting up wifi wise. It's connected, says the signal is great, but really does not function on it. My girlfriend's Verizon s4 just got the lollipop update and is doing it as well. Mobile data is working great as usual, but she has a limit so I need to get this right. Things I have tried: changing to static, various router changes including security and device permissions, various restarts and resets, nearly everything I could find online short of buying another router. I have a Comcast wifi modem/router combo that this happened with before but a quick security change cleared it up. This time no dice. Any help is appreciated.

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[Q] Strangely isolated WiFi issue

Hi all,
Captivate with Cognition 2.2B9.1.1
Android 2.2
Belkin router (it is at home so I can't get the model number right now)
The simple problem is that my captivate will connect to all of the other wifi networks that I use but it stopped connecting to the one at home. All other phones and computers in the house connect just fine. The interesting thing is that when you watch the connection status on the phone, it connects and then immediately disconnects and starts the handshake over again. I have watched this happen over and over again. Weird.
I first thought it was my router so I modified the settings by using different channels and security methods. No dice. I then reset my router to factory specs and still nothing. I want to blame the router but I am stuck thinking that it might be the phone. Is there a way to purge the WiFi and IP information? I would rather not dump my phone and restart if I can avoid it. Can this be done through a terminal app like other platforms?
Any ideas or similar experiences?
Thanks ahead of time.
999
more info
So I dropped an updated Cognition Rom 2.3.b6 and solved the issue. Last night I cleared my RAM (level 1 and level 2) and when I got home the problem occurred again. Bizarre. Could I be clearing a cache that refuses to refresh? Ideas?

[Q] Enabling Wi-Fi Crashes HD7

My HD7 worked without issue from the beginning of the year til around a month ago.
All of a sudden, my WiFi became extremely unreliable, sometimes taking an overly long time to recognise or connect to an obvious access point, sometimes finding none at all.
After I do manage to connect wirelessly, I see no speed increase in data transfer to suggest that the phone is even using the wireless link. Web pages sometimes load slower than over 3G. I had read that HD7s have trouble using certain WiFi protocols and adjusted accordingly, but the workaround was to no avail.
Additionally, once WiFi has been selected, I cannot switch it off. I am 'locked out' of the WiFi settings page. When I tap it in the menu it responds as if I've nudged it but it cannot load. The only solution is to remove the battery. On occasion, this stuck WiFi has also caused the capacitive buttons, camera and power switch to become inactive. Curiously, touch screen function seems unaffected.
I thought maybe this issue was tied to corrupt settings with my hub, but changing SSID / WEP key etc etc on my router hasn't fixed the problem, and connection to other open WiFi signals jam the phone just as badly.
I upgraded to Mango in the hope that a fresh OS update may 'rejig' my wireless settings into working, but again, no joy.
Anyone experienced anything similar? My final options seem to be factory reset the handset to see if that solves the issue, or return the handset to O2. (Both involve losing all my data, game saves, application data AND the recently delisted SW: Battle for Hoth permanently.)
Anyone got any other thoughts?
*EDIT* After a bit more research, I found that even when the phone has connected to a WiFi source, by turning Operator Data Service off, you can see that the WiFi service is in fact not doing anything.
I braved a factory reset, managed to whack WiFi on no problem, browser ran at appropriate speed, then everything crashed as per usual, I couldn't connect to the marketplace and had to pull the battery in order to use any of the capacitive buttons. I guess it was a hardware issue individual to my phone after all.
Guess I'll give O2 a ring sometime soon to sort a replacement. Not looking forward to losing all my game progress though it has to be said.
bro i m having the same exact problem havent find any solution yet i even tried to copy and replace the wifi files from another clean htc hd7 but useless when i upgraded to 7740 the wifi worked perfectly for 1 night only then at the morning it stopped working, everything else works great. my theory says that its not a hardware problem cz i used internet sharing which uses the wifi adapter (if i m right) so its a software I GUESS
soufano21 said:
bro i m having the same exact problem havent find any solution yet i even tried to copy and replace the wifi files from another clean htc hd7 but useless when i upgraded to 7740 the wifi worked perfectly for 1 night only then at the morning it stopped working, everything else works great. my theory says that its not a hardware problem cz i used internet sharing which uses the wifi adapter (if i m right) so its a software I GUESS
Click to expand...
Click to collapse
I had the same problem as well, couldn't connect, got to the point where even the power button stopped responding. Hard resets would only help for a short time and enabling WIFI would never connect right and eventually get me back to the same problem. I then got a replacement device, but it's not much better, I still can't connect to any WIFI, but at least it's not freezing up on me. My solution thus far has been just to avoid turning on WIFI if at all possible, but it's far from a perfect workaround. I'm guessing it's the HTC WIFI driver that's got issues.
i got similar problem.. send phone to service problem was "circut board"
replaced working fine...
when i was using wifi my phone was freezing some menus stop working and i have to remove battery

Nexus 5 Wifi Issue

So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Dillllz said:
So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Click to expand...
Click to collapse
There was a thread around here somewhere that suggested turning off your mobile data helped fix this problem, I think it was in the N5 General forums.....here it is:
http://forum.xda-developers.com/showthread.php?t=2550690
Don't know if it'll help or not, just saw your thread and had just looked at the other one, figured I'd toss it out there.
Thanks for the reply, just tried that solution but still no luck.
I have a similar problem except that there are phases of wifi not working.
Sometimes I would have around 20-30 seconds of WiFi not working and there would be no data transfer.
Speeds are still fast when it is working however.
I played a little with only using mobile data and no wifi, and everything worked. (Small sample size however).
Seems like this is a WiFi only issue.
So somehow overnight the wifi has managed to fix itself, will report back if the problem returns.
The issue with the wifi returned unfortunately.
Dillllz said:
The issue with the wifi returned unfortunately.
Click to expand...
Click to collapse
Don't know if you've tried this but change your WiFi frequency band in advanced setting to either "5 GHz only" or "2.4 GHz only," whatever your router uses. Might be worth a try.
Thanks for the help, but I've tried changing some settings in advanced wifi settings but it hasn't worked. Even what you recommended I've tried that before and it didn't work.
wifi issue
Also I have the same issue - Im connected to router by wi-fi, home and work and time by time (5x a day) wifi stops working. Wifi is enabled in settings, but there is no connection. Restart the cellphone helps, but after that, maybe an hour, it appears again.
Issue was in 4.4 and still appers in 4.4.1.
Yet did not found how to solve it.
I have the same issue on my gnex running shiny 4.4, but I also had the same issue on 4.3. Tried the wifi options, nothing worked. Unfortunately, no solution for this device that has to last one more week. The double swipe down and tapping wifi gets the connection back, but it is only a work around.
The N5 connects seamlessly to my home and work wifi. A few days ago, I flashed the hammerhead factory image, TWRP and the 4.4.1 update.
Nexus 5 - wifi not switch automatically from data
pcloadletter1 said:
I have the same issue on my gnex running shiny 4.4, but I also had the same issue on 4.3. Tried the wifi options, nothing worked. Unfortunately, no solution for this device that has to last one more week. The double swipe down and tapping wifi gets the connection back, but it is only a work around.
The N5 connects seamlessly to my home and work wifi. A few days ago, I flashed the hammerhead factory image, TWRP and the 4.4.1 update.
Click to expand...
Click to collapse
Hey,
I have the same problem with 4.4.2.(factory rom, no root or not unlocked). Sometimes the wifi not works and get orange. I must put airplane mode to fix it. Its annoying.
But as well happens to me:
When I go out from office or home (where I have wifi connections saved in phone) the phone automatically switch to data plan from carrier. But when I come back the phone stays with data and there is not automatic switch to wifi. Sometimes it help to put wifi off or always airplane mode on/off for a while.
I do not know if it is normal behave of android but I would like have automatic switch to wifi.
I tried to change wifi details (changing bands, etc.) but not helped.
Please help. Thank you.
Is custom ROM or kernel will fix it??
For some unknown reason, as soon as I updated my router's firmware, the problem disappeared.
Updated Android 6.0 solved the issue
Dillllz said:
So I've had my Nexus 5 for roughly around a month and I hadn't experienced any issues others have had with wifi not connecting until now. My N5 will show im connected to my home wifi with full bars, but going into quick settings shows it to be orange. Suggesting there's no data transfer, I cannot use any internet based apps with wifi. I've tried some suggestions, switching my router off then on, rebooting the phone, turning some settings off in the advanced panel in wifi settings. All have failed.
I was just wondering if anyone else has this problem and if anyone has a fix to it.
Click to expand...
Click to collapse
So I had the unfortunate experience of having my wifi go down while on vacation and for 3 weeks I spent a good chunk of time wiping and reinstalling multiple versions from Cyanogen, Paranoid android and 4.4 - 5.1 to no avail. I just did another factory wipe today and installed the new Android 6.0
The Finger Pointing Game is OVER
Read through 30+ pages of other android users with similar experience and some people send their units back to LG and some even managed getting a new handset. There was never any hardware issues with my unit I just couldn't turn on the WiFi but after the install WiFi works? Guess next time you push a software update to our Phones CHECK YOUR SH*T google and Maybe DON'T Take 3 months to FIX your F*CK Up.
I have a similar issue. Since Lollipop my phone almost never automatically connects to my WiFi anymore. What's wrong?

Bluetooth causing extremely slow wifi

So I've had my m8 since launch, about May of 2014. I've never once had a problem with my wifi, until last week. All of a sudden, I noticed all of my wifi connections (home, work, etc) are all extremely slow. Speed tests are barely getting 1mbps down or up, and the test itself is very erratic, bobbing up and down the whole time. All my other devices are fine, and nothing with any of my wifi connections has changed. I uninstalled about 3 apps that I had installed within the last month, with no change. Verizon sent me a replacement m8, and I got it yesterday, loaded up all my stuff, and low and behold, still slow wifi.
After talking with numerous Verizon techs, they can't solve it, even after multiple factory resets. However, this morning I saw a post while googling it, not an m8 but still android. They said that if Bluetooth is on, but not connected to a device, it could cause issues. So I turned my bluetooth off, and speeds were perfect, getting exactly what my internet connection is. Turned it back on, and back to 1mbps.
So one, why is this happening? I've read that the bluetooth and wifi antennas are the same, and that could cause interference, but it should not be this bad. Second, why did this just now all of a sudden start? I didn't usually leave bluetooth on, but I got a new car about 3 months ago, and decided to leave it on to automatically connect when I'm driving. But it was fine until last week, why the change?
Have you discovered anything new? I've had my Verizon m8 since April 2014 and have always left bluetooth on for my fitbit to sync. I only recently started having problems and can't identify any recent update that happened this month that would cause it. When bluetooth is on and a device is connected my wifi performance is very slow - 100+ ms ping, 1-2Mbps up/down doing a speedtest. Turn bluetooth off and speed test again then wifi performance jumps to 20Mbps up/down with 12ms ping times to the same speedtest server.
I have factory reset my phone 3 times, changed wifi channels, tried 2 different routers and 1 access point. None of the wifi changes affected speeds until bluetooth was turned off. It seems to be a little quicker 3-5 Mbps with bluetooth on and no devices paired but still that's not acceptable.
sitlet said:
So I've had my m8 since launch, about May of 2014. I've never once had a problem with my wifi, until last week. All of a sudden, I noticed all of my wifi connections (home, work, etc) are all extremely slow. Speed tests are barely getting 1mbps down or up, and the test itself is very erratic, bobbing up and down the whole time. All my other devices are fine, and nothing with any of my wifi connections has changed. I uninstalled about 3 apps that I had installed within the last month, with no change. Verizon sent me a replacement m8, and I got it yesterday, loaded up all my stuff, and low and behold, still slow wifi.
After talking with numerous Verizon techs, they can't solve it, even after multiple factory resets. However, this morning I saw a post while googling it, not an m8 but still android. They said that if Bluetooth is on, but not connected to a device, it could cause issues. So I turned my bluetooth off, and speeds were perfect, getting exactly what my internet connection is. Turned it back on, and back to 1mbps.
So one, why is this happening? I've read that the bluetooth and wifi antennas are the same, and that could cause interference, but it should not be this bad. Second, why did this just now all of a sudden start? I didn't usually leave bluetooth on, but I got a new car about 3 months ago, and decided to leave it on to automatically connect when I'm driving. But it was fine until last week, why the change?
Click to expand...
Click to collapse
I too have had bluetooth on for months to be able to connect to my car, never had a problem until about a month or so ago. I did two factory resets, and everything seemed to work fine, but after a day or so, when all my apps were back on the phone, it would start up again. I have a hard time believing a specific app is doing this, unless it was one of the HTC Home updates or something.
Verizon sent me a replacement M8, I got all my apps on it, and the same thing, after a day or so it's super slow with Bluetooth on, horrible ping and less than 2mbps down and up.
So then I contacted HTC directly, did all their troubleshooting, factory reset, and it's still there. They sent me a replacement as well. I turned it on, but did not put my sim into it. I spent 2 days with it, and only downloaded the Speedtest app, nothing else. Speeds are fine with bluetooth on. I then downloaded the rest of my apps (I actually do have quite a few apps, so if it's one of them it will be a pain to figure out which one). It's been two days now and speeds are still good with bluetooth on. Later today I'm going to offically move over to this phone and put my sim in it.
It's just really frustrating to keep turning bluetooth off and on again, and there should be no reason for this to be happening out of the blue all of a sudden.
sitlet said:
I too have had bluetooth on for months to be able to connect to my car, never had a problem until about a month or so ago. I did two factory resets, and everything seemed to work fine, but after a day or so, when all my apps were back on the phone, it would start up again. I have a hard time believing a specific app is doing this, unless it was one of the HTC Home updates or something.
Verizon sent me a replacement M8, I got all my apps on it, and the same thing, after a day or so it's super slow with Bluetooth on, horrible ping and less than 2mbps down and up.
So then I contacted HTC directly, did all their troubleshooting, factory reset, and it's still there. They sent me a replacement as well. I turned it on, but did not put my sim into it. I spent 2 days with it, and only downloaded the Speedtest app, nothing else. Speeds are fine with bluetooth on. I then downloaded the rest of my apps (I actually do have quite a few apps, so if it's one of them it will be a pain to figure out which one). It's been two days now and speeds are still good with bluetooth on. Later today I'm going to offically move over to this phone and put my sim in it.
It's just really frustrating to keep turning bluetooth off and on again, and there should be no reason for this to be happening out of the blue all of a sudden.
Click to expand...
Click to collapse
Strange issue, but from how you described it, it must be a 3rd party application. What I would do in this situation, is do the factory reset, and download 5 apps at a time. Until you narrow it down to the 5 apps that are causing the issue, then you can narrow it down much easier out of the 5 applications. A pain, yes. but once you figure out the app that's causing the issue, you may decide you don't need it, or you only use it once in awhile and can remove it, until you need it, or possibly download an app ops application from the Playstore and remove the Bluetooth permissions and see if that fixes it.
Best of luck.
Seems to help...
I just tried the solution offered in another forum (xda won't let me post the link so I'll copy and paste the information here:
Open page with the available "Wi-Fi" networks (Settings, WI-FI)
Tap on the "3 dots" in the upper right corner
"Wi-Fi Direct"
Tap on the "3 dots" in the upper right corner
"Rename device"
Replace "Android_ed2c" with "HTC One" (or whatever you want) and hit "OK"
Before doing this I had a 300ms ping when Bluetooth is on, and very low bandwidth. Now with Bluetooth on the wifi ping is around 50ms (normal for my home internet) and the bandwidth is back to normal. Time will tell if it sticks, but so far so good!
So I had been running all my apps on my replacement phone for about a week now, and have had no problems. The other day I officially swapped my sim card into this new phone, and for two days now, it's been fine. Bluetooth and wifi are on constantly, and I see no issues with bandwidth. So who knows why the last two devices had a problem, but for now it seems to be fixed.
Having the same issue, originally posted on reddit and then found this thread: https://www.reddit.com/r/techsupport/comments/3kv6z6/wifi_issues_with_multiple_phones/
Turned off bluetooth and it's fine... Will be experimenting with my gf's m8 this weekend.
MJB_One said:
I just tried the solution offered in another forum (xda won't let me post the link so I'll copy and paste the information here:
Open page with the available "Wi-Fi" networks (Settings, WI-FI)
Tap on the "3 dots" in the upper right corner
"Wi-Fi Direct"
Tap on the "3 dots" in the upper right corner
"Rename device"
Replace "Android_ed2c" with "HTC One" (or whatever you want) and hit "OK"
Before doing this I had a 300ms ping when Bluetooth is on, and very low bandwidth. Now with Bluetooth on the wifi ping is around 50ms (normal for my home internet) and the bandwidth is back to normal. Time will tell if it sticks, but so far so good!
Click to expand...
Click to collapse
Thanks for the post. Tried this, but no luck. Hopefully it can work for others
Sent from my HTC6525LVW using Tapatalk
Multiple threads discussing this issue...
http://forums.androidcentral.com/htc-one-m8/565952-app-causing-slow-wifi.html | 2015-AUG-12
http://forum.xda-developers.com/ver...luetooth-causing-extremely-slow-wifi-t3177402 | 2015-AUG-12
https://www.reddit.com/r/htcone/comments/3kr2sb/why_did_my_htc_one_m8_wifi_get_so_slow/ | 2015-SEP-13
https://www.reddit.com/r/techsupport/comments/3kv6z6/wifi_issues_with_multiple_phones/ | 2015-SEP-13
https://www.reddit.com/r/htcone/comments/3n8xu1/problems_with_wifi_connection_unable_to_find_help/ | 2015-OCT-02
https://www.reddit.com/r/htcone/comments/3n663y/m8_wireless_downloads_falling_to_the_center_of/ | 2015-OCT-01
Same HTC M8 issue - very slow WiFi when Bluetooth is running
Same problem on an HTC M8... speedof_dot_me speed test shows 96 ms latency with D/L at 0.07 mbps (really!) on an 11 mbps router. Turned off Bluetooth, and voilla! Latency dropped by 85% and WiFi speeds increased by a factor of 60! I suspect an HTC issue since an August or September update... since this wasn't occurring prior to August.
Verizon sent me a replacement M8 that was on 4.x.x android. I updated via on-air update (not rooted) to Lollipop and installed all my apps. Everything was fine. That night, it did a security update and, since then, my wifi+bluetooth were horked when turned on together.
Do, I did a factory reset (which doesn't undo the updates), but since doing the factory reset and installing just the basic Play-store updates 24 hours ago, the problem is not back.
I'm going to slowly add back my normal apps this time.
Solved on one plus one
Hello, i had since two weeks the similar issue. when bluetooth is switchef on (unconnected), wifi is very slow. in the past this different, so no issue with hardware and frequencies. Finally, I found out that it was linked to an App that accesses Bluetooth.
In my case it was the App Accu-Chek, I read in a big forum that it was linked to a Garmin app.
Uninstalling the App solved the issue.
My wife has a similar issue on Stock Galaxy S4 mini with that App.
This is definitely app-related. I tried force closing out of a bunch of apps that weren't related to the video I was playing and it seemed to fix the bandwidth issue with bluetooth enabled. Guess I'll need to experiment with closing certain apps until I find the culprit.
I was having this same problem. It looks like the RetailMeNot App was the culprit for me.
clusterchuck said:
I was having this same problem. It looks like the RetailMeNot App was the culprit for me.
Click to expand...
Click to collapse
You sir deserve a cookie. Thanks for pointing out the worst app of 2015.
Solved on my Phone!
I used to have the same problem. I am having a Sony Xperia Z1 Compact and a Smartband Talk. At the beginning everything was fine but after sometime (strongly caused by a software related issue) I begin to face the same problem. While bluetooth is on WiFi bandwith dropped to a very little amount (around 0,02- 0,01 Mbits/s). Then I read somewhere, about how to verify whether it is a software or hardware issue via checking it in the Safe Mode. So I unpaired by smartband talk and uninstalled the smartband talk software (smartband talk requires a bluetooth connection for functioning). Then restarted my phone in to safe mode by tapping and holding the power off on the shutdown menu. I downloaded the smartband talk software and turned on my bluetooth and paired my smartband talk again. Then restarted my phone in to normal mode. And voila, problem solved.
It is not a guaranteed method but worth to try.
Wish you good luck.

HTC U11 dual sim phone WiFi No longer connects After Android Pie Update

Hi
My phone upgraded to Pie 2 days ago and since the update my WiFi no longer connects. My phone can see the various networks and when I try to connect it is like it is stuck in an authentication loop and acts like the password is incorrect. I have entered the password multiple times and even changed it too. It sits in the saved networks but will not connect. I even fiddled with the WiFi turns on automatically settings and it still doesn't work. I have tried everything even factory resetting my phone, which has been a nightmare because I lost a heap of 2FA codes with my authenticator. I have reset my router, changed SSIDs, passwords etc. Basically everything I can think of I have done. I have raised the issue with HTC and they have asked me to do what I have already done but in the meantime, while I await a response from them for my next course of action, I am wondering if any of you guys know of any issues where the WiFi doesn't work anymore. I am currently using the internet on my mobile network but I will probably burn through the data before the month is out so I am really keen to get my WiFi working again as it's going to cost me a fortune otherwise.
Thanks in advance for any responses that I may receive
Solved
Ok I fixed it. It was a weird solution all I had to do was disable my password on my network and it connected fine. I then re-enabled my network password and entered the password on my phone and it worked. This was such a frustrating issue and I don't know why it wouldn't work before. I went through some pretty drastic measures to sort it, but now I know for next time to try this. I hope this helps anyone else out with a similar issue

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