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Ever since I got my Captivate, it has had issues with wifi. It's not my routers, or any configuration in my routers, as it happens with 3 different routers (not to mention that I work in IT, so it's definitely not the routers).
Here's what it does. When you start with a fresh boot, it works perfectly fine. As the day goes on, it gets worse; it starts dropping the connection randomly, and eventually stops working altogether. This wouldn't be so bad of a problem, but the point that it "tries" to start accessing a wifi AP, it drags the phone down in speed, eventually freezing, causing me to ave to reboot the device.
I already tried all options with wifi sleep policy; I've tried 3 different ROMs; I've tried clearing all wifi settings and letting the ROM generate a new .conf file, I've tried different wifi firmwares. Nothing works as it should.
What should I do now? Does anyone have any tips for me? I know it's the OS and not the phone, because the last ROM that worked perfectly was Perception 4.
Thanks for the help.
Easy fix I found.
Open Allshare, it should have come pre-installed.
Connect.
Your Wi-Fi problem should be fixed.
You will have to repeat this step when switching between locations, or when you come back to the troublesome router. I don't know why this works, but it does. It seems to have helped alot of other users in other forums with this problem. Maybe someone should make a sticky of this...seems to be a big problem with 2.2 Foryo.
Similar experiece with both an EVO and Captivate with a Linksys router and DLink wireless AP. Whenever I walked into the house, the other PCs attached to the router would stop working, the phone would not get data although it showed as connected and I had to reboot the router - both wired and wireless clients. The Linksys was a very old firmware and I had bad experieces with flashing a few previous devices. I ditched my Linksys for a DLink 8 port and wireless and have not had the issue with either the EVO, Captivate nor any devices attached to my network.
yamabigdog said:
Easy fix I found.
Open Allshare, it should have come pre-installed.
Connect.
Your Wi-Fi problem should be fixed.
You will have to repeat this step when switching between locations, or when you come back to the troublesome router. I don't know why this works, but it does. It seems to have helped alot of other users in other forums with this problem. Maybe someone should make a sticky of this...seems to be a big problem with 2.2 Foryo.
Click to expand...
Click to collapse
This is news to me. You are correct, I do have Allshare. I'll try it the next time I have the issue.
What if I simply remove Allshare? Will that fix the problem?
bdfx69 said:
Similar experiece with both an EVO and Captivate with a Linksys router and DLink wireless AP. Whenever I walked into the house, the other PCs attached to the router would stop working, the phone would not get data although it showed as connected and I had to reboot the router - both wired and wireless clients. The Linksys was a very old firmware and I had bad experieces with flashing a few previous devices. I ditched my Linksys for a DLink 8 port and wireless and have not had the issue with either the EVO, Captivate nor any devices attached to my network.
Click to expand...
Click to collapse
I have 2 Linksys routers with the latest firmwares, and one D-Link. No matter, it does the same thing with them all.
I should also mentioned that I already tested with changing the router's wireless broadcast channels, signal strengths, firmware updates, the whole 9 yards. The problem is the phone, not the networking equipment.
I used this on 3 Captivates in our house and they are all working great now. Had F&*%%#ed wifi issues before that. They are all ok now. Hope it lasts!
https://market.android.com/details?id=com.brilliapps.wifiandmorefixer&feature=search_result
ajm786 said:
This is news to me. You are correct, I do have Allshare. I'll try it the next time I have the issue.
What if I simply remove Allshare? Will that fix the problem?
Click to expand...
Click to collapse
I'm not sure if that will work. I don't think this is by any means a permanent fix, but a temporary work-around. I think it just kicks the wi-fi into gear again somehow...=-(
Hope it helps someone out though.
I had a friend who was having issues with her phone not even attempting to scan for wireless, seems there is an issue on android phones that the networking cache file or whatever it is gets cluttered and needs to be renamed. (Android recreates it)
The process is rather simple, I walked my friend through the steps over the phone w/o issues.
I had her use oneclick root/unroot to root her phone.
http://forum.xda-developers.com/showthread.php?t=739304
Then Had her go through these steps to rename the file.
http://androidforums.com/samsung-moment/46179-unable-scan-networks.html
The steps are for a samsung moment but still work. Also noted that the steps w/o rooting do not work. After you finish renaming the file you can use the application in the first link to unroot the phone and go back to stock
SlappyMcgee seems to have the best fix
It wont hurt anything and I suggest just renaming the file to .old instead of deleting it. the entire process takes like 8 mins
SlappyMcGee said:
Then Had her go through these steps to rename the file.
http://androidforums.com/samsung-mom...-networks.html
Click to expand...
Click to collapse
Link doesn't work, at least for me.
Update:
The Allshare thing works. The problem is that it's not a feasible workaround, because you have to keep doing that every time you want to restart the wifi after the screen goes to sleep or what not.
I will next try that config file delete. I read up on that last night, but didn't think that was it, because I already did a few ROM installs which didn't seem to clear it up.
Nelimungous said:
I used this on 3 Captivates in our house and they are all working great now. Had F&*%%#ed wifi issues before that. They are all ok now. Hope it lasts!
https://market.android.com/details?id=com.brilliapps.wifiandmorefixer&feature=search_result
Click to expand...
Click to collapse
Little early for me to say this is working for sure. But ill be damned if it didn't, at the very least, temporarily fix it. Instant reconnect. Doesn't hang. Seems like it might be the real deal, for me at least. Ill come complain if it craps out again.
Edit: .... worked for 15 minutes. Aka doesn't work...
What's your kernel?
xdahgary said:
What's your kernel?
Click to expand...
Click to collapse
I tried all different ones. Firebird and Speedmod mainly. When I flash newer versions, I always wait till the battery is 100%, and I clear the Dalvik cache. Nothing ever works.
phlunkie said:
Link doesn't work, at least for me.
Click to expand...
Click to collapse
Sorry about that. I fixed the link in the original post.
http://androidforums.com/samsung-moment/46179-unable-scan-networks.html
i had wifi issues and still do. my girlfried does too with her Aria. The phone really seems to only work on routers who have a DNS set to google. The bar near my house it flys and at home i was getting no wifi so I changed my router DNS to google from comcast and its fine. I agree there is a problem but not one that is going to get fixed by Google
My wifi workaround
I had two captivates which both had problems with my home router. Reseting the router never fixed the issue, but resetting the phone did, at least for a few minutes.
I found that phone has problems using DHCP with routers that assign addresses in the 192.168.1.xxx range. It seems to be a conflict with some other internal IP in the Captivate or something. To get around this problem, I had to change the local address of my router to 192.168.2.1, and change the DHCP range to 192.168.2.xxx The new subnet cleared up the problem immediately for me and it hasn't returned, at least, not on my home router. Unfortunately, this won't work on hotspots or other networks that are stuck in the 192.168.1.xxx range.
timsline said:
I had two captivates which both had problems with my home router. Reseting the router never fixed the issue, but resetting the phone did, at least for a few minutes.
I found that phone has problems using DHCP with routers that assign addresses in the 192.168.1.xxx range. It seems to be a conflict with some other internal IP in the Captivate or something. To get around this problem, I had to change the local address of my router to 192.168.2.1, and change the DHCP range to 192.168.2.xxx The new subnet cleared up the problem immediately for me and it hasn't returned, at least, not on my home router. Unfortunately, this won't work on hotspots or other networks that are stuck in the 192.168.1.xxx range.
Click to expand...
Click to collapse
I ran into this problem on my Router. Netgear wndr3700. For some reason when I turned the wifi on my phone either the router was assigning it the same address as my Tivo or my phone wasnt accepting anything but that address. To resolve I forgot the connection my phone then reflashed the firmware on my router. Then reconfigured the wifi on my phone. After that no more issues.
Well i honestly dont know whats wrong with mine. I've done all the "fixes" in this and other threads but it doesnt work. What is weird is that it connects using All Share and only All Share. However it does connect at other places like my friend's, sister's, granparents and gf's houses. I think I'm gonna go to att and demand a new phone and an upgrade
Just wanted to post an update on this. For the most part, deleting the wifi configuration file in data\wifi seems to have cured the problem. The wifi signal did get stuck on one or two occasions, but I'm bound to believe that the issue was caused elsewhere.
I've noticed that the profile for my home wifi network keeps getting disabled. Usually, I'll leave for a bit, then come back and about half the time it never reconnects. When I go into the wifi list, it's marked as disabled. I enable it and it works fine from that point unless I leave again. It's my understanding a profile will get disabled when it cannot connect to a network for some reason, but clearly it can. My G2 and SGS never have this problem. Is this a setting somewhere? Thanks...
I am having this same issue. I dont know how to fix it
This is more serious than I realized! I just got disconnected randomly even while staying in perfect coverage. Not only does it disconnect, but it DISABLES the connection and won't reconnect again unless I manually tell it to. I rely 100% on WiFi calling while home and now I'm missing all kinds of calls and texts because WiFi is disconnected...
I'm hoping this is just is a software issue that can be resolved pretty quickly, officially or unofficially...
This phone has like 10 legit problems already. Tmobile needs to hurry up with the updates or the refunds will kill them.
It might help if you talk about the router you're using. I have a Netgear N600 and haven't had any Wi-Fi issues either connecting, staying connected, or automatically reconnecting. Bluetooth on the other hand...
BarryH_GEG said:
It might help if you talk about the router you're using. I have a Netgear N600 and haven't had any Wi-Fi issues either connecting, staying connected, or automatically reconnecting. Bluetooth on the other hand...
Click to expand...
Click to collapse
It's a Linksys WRT610N. Very modern and very stable router. There's no reason this phone should have any problem with it. I literally have a G2 and SGS sitting side-by-side with the G2x and only the G2x has this problem. The SGS is Froyo and the G2 is Gingerbread. I also have a slew of other wireless (on both 2.4ghz and 5.8ghz bands) and wired clients connected that all have zero issues. I don't know why it would work on one router and not the next...
Are you using WPA2-AES encryption or something else?
zaventh said:
Are you using WPA2-AES encryption
Click to expand...
Click to collapse
Yes. And you're right, the phone is very temperamental across a number of areas.
Did you set up your wifi to never go to sleep? Cause if you havent - it disconnects every time you turn off the screen.
In order to do that, go to Settings=>Wireless & Networks=>Wi-Fi Settings=> click on the "menu" button on your phone=> Advanced=> Wi-Fi sleep policy=> and choose Never.
I did that, and my wifi calling is flawless ... and I rely on it pretty much all the time that I am at home (thanks for that stupid t-mobile signal)
I have the same issue and the setting I have by default to Never go to sleep... Also, has nothing to do with router as any of my other phones have this issue including Nexus One.
Did by any chance any of you with this issue restore some Titanium Back-ups? Because when I restored mine from a back-up of my 1st G2x (exchanged) I also restored the previous wi-fi settings and after that the wi-fi wouldn't work correctly. I did a factory reset and it fixed the problem.
Edit: If all else fails, then try a factory reset. I know it sucks, but it could fix everything.
Sent from my LG-P999 using XDA App
I'm having issues with this as well. Wifi set to never sleep, I haven't restored any apps. I constantly lose connection. I've tried the factory reset thing etc. and it doesn't help.
I can connect to my wireless g Linksys access point but not my airport extreme ... my Linksys is open my ape is not(I realize I wrote ape LOL)
Sent from my LG-P999 using Tapatalk
WiFi seems to be losing dns services
I have the same WiFi problems and while a factory reset clears the problem
temporarily and changing the WiFi sleep setting to never is an immense help
once it's gone off-line I can't get it to come back.
I have noticed that if it has a cached dns lookup to an ip address that that
ip address is still accessible. So if you can get OTA data live, look up google.
Switch to wifi, google is still accessible and you can do queries but you can't
click through on the links because the dns lookup fails.
I've fiddled with killing myaccount, suggested elsewhere, without success.
Unless there is some robust configuration change that pops up soon I suppose
I'll have to return it...
boylan said:
I have the same WiFi problems and while a factory reset clears the problem
temporarily and changing the WiFi sleep setting to never is an immense help
once it's gone off-line I can't get it to come back.
I have noticed that if it has a cached dns lookup to an ip address that that
ip address is still accessible. So if you can get OTA data live, look up google.
Switch to wifi, google is still accessible and you can do queries but you can't
click through on the links because the dns lookup fails.
I've fiddled with killing myaccount, suggested elsewhere, without success.
Unless there is some robust configuration change that pops up soon I suppose
I'll have to return it...
Click to expand...
Click to collapse
Did you also uninstall market updates and freeze the market updater?
It got mine working again without any problems. Sucks that this has to be done to get wifi to work properly.
I've frozen MyAccount and WiFi calling and it's working at the moment.
Truely I was a little tired and forgot about the market updates until I got
back here.
Insane that one has to do something like this for such a basic feature.
I mean who is going to use the OTA networking when wifi is available?
Let alone the cost issues. I went from 880kbps to 10100kbps going from
OTA to wifi.
This device must have rushed out the door.
Useless at any speed
So I've uninstalled the updates to and FROZEN:
My Account
Market Updater
WiFi Calling
AppPack
and the phone is still trippy. I've discovered also (via the engineering menu)
that the networking ping test fails - "network unreachable". The wifi
data looks good but it doesn't show the current gateway or dns configuration
information.
I'm at a loss for what to try next. Anyone got any suggestions?
Is there something like a netstat android app?
I am having the SAME issue as well as the OP..... =/
wifi recovery
Too soon to say that this is a consistent work-around but I'm
having some short term luck with
rebooting the phone (remove battery) in Airplane mode
enabling wifi
turning airplane mode off
Not sure if the battery pop is necessary. I suspect it's not.
I also suspect that freezing/deinstalling the various updates
is pointless.
Probably the whole work-around is to change the
Wi-Fi sleep policy to never:
settings->wireless & network settings->Wi-Fi settings->advanced
and use the airplane/wifi enable reboot sequence.
If someone has a permanent work-around based on precise setup
sequence and freezing applications I'd like to hear it - I think I've
followed the several posts on this topic and that path is unreliable but
it never hurts to be wrong.
dj75728 said:
Did by any chance any of you with this issue restore some Titanium Back-ups? Because when I restored mine from a back-up of my 1st G2x (exchanged) I also restored the previous wi-fi settings and after that the wi-fi wouldn't work correctly. I did a factory reset and it fixed the problem.
Edit: If all else fails, then try a factory reset. I know it sucks, but it could fix everything.
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
Mine does this and I never restored any system data. I only restored apps.
Strange.
I use WiFi calling at work with no problems. It is a Netgear router. I haven't had problems at home with my Linksys router either.
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.
Hey guys,
I have a problem with my nexus, I've noticed that my internet on my phone is acting quite...strange to say. I have a dual band router(d-link 880l) and on my phone I only use the 5GHz one. it's the only device in my home that has problems.
The problem is that when searching something using the google bar it takes ages until I get the desired result, on youtube app sometimes when I open it ,it won't load anything,the second I close it and open it again it works,some videos just refuse to start until i restart the whole application, sometimes whatsapp doesn't connect to their server I have to restart the app to get messages, or to see las act of people,on facebook messenger is the same story,when i send a message it won't send ,it acts like I have no internet connection,until I restart the app. Ironically I get CONSTANT 81mb/s download and 91mb/s upload in speedtest.net app.
I really don't know what to do ,i've forgotten my network,tried connecting on 2.4GHz,put my wif i mode only in 2.4GHz,enterd recovery cleard cache partition,unninstaled whatsapp,youtube,fb messenger,google app,deleted all google play services data,restarted phone,neither of those fixed it...
Can you help me...?
Are you running the latest stock ROM or some other ROM/kernel combination?
audit13 said:
Are you running the latest stock ROM or some other ROM/kernel combination?
Click to expand...
Click to collapse
I'm running rastapop 5.1.1 LMY48I with elementalx 4.04 since august 2015 with no fancy kernel settings or mods, just adblock and xposed over the top.I started to have this problem since november.
I did a factory reset on the router and I still have the problem.
To rule out software being the problem, I recommend flashing back to stock to see if the issue goes away.
I own a D-link DIR-850 (dual band AC router as well) and I am experiencing kind of the same problems. I have a Nexus 5 with latest firmware (MMB29S) but have had these issues for a while already. My girlfriends HTC One mini suffers from these problems as well. Most annoying is the seemingly random disconnects from whatsapp, I guess caused by Google Play Services being unreachable as at that same time also the Play store and other services relying on it are unreachable. Not sure whether this is an Android bug or caused by a bug in the Dlink router, which off course has been reset to factory defaults and checked for updates several times
Strange thing is that at the times that the Play Services are unreachable, other (plain internet based) services such as browsing with Chrome are working just fine.
I did some research on this compatibility issue between an android phone and a d-link router after I discoverd I'm not the only one.
The problem turned out to be some bug that is present in a way or another in android since lollipop , I think that lollipop(my case) is getting stuck when trying to do a DNS lookup ,but the problem is that it only happens on my home network, I don't have any problems at my friends wi fi or a public one. So my router isn't playing well with lollipop or the other way around.
The only solution I found to this problem is to disable ipv6 on your router or on the phone. So I did ,made a script that changes a value in a file, here it is : "echo 1 > /proc/sys/net/ipv6/conf/wlan0/disable_ipv6". With this I disabled ipv6 protocols on my phone(i've verified "disable_ipv6" file just to be sure that the value is "1") . Everyone bragged about it that it sloved their problem. Well guess I'm not that lucky,the problem still persists on my phone...
I've tried everything in the book...guess that this brand new 150 dollar router is not that impressive as they say...
I don't really want to factory restore my phone,I want to be my last option...the guy above me said that it did the factory reset thing and it didn't work so guess that it isn't an option after all...
If someone can help me(us), i will be very pleased...
At my workplace we have an Asus RT66NU providing the wifi, where I have never had any problem with this.
As you are suspecting it has something to do with the ipv6 stuff, I'll be experimenting with this a bit to see if something changes. First test is putting the autoconfiguration setting to SLAAC+stateless DHCP.
Next step will be disabling ipv6 at all.
renearts said:
First test is putting the autoconfiguration setting to SLAAC+stateless DHCP.
Click to expand...
Click to collapse
I tried with PPPoE( my internet connection ) on ipv6 that is shared with my ipv4 session with SLAAC + stateless DHCP and stateful DHCPv6 . At first it was promising but in the end it didn't really solve my problem. Just for the record ,I had my ipv6 settings before on local connectivity only .
I can connect to the wifi in my office at work. I can browse the internet with chrome and I can even perform a speed test with the speedtest app. However, I cannot download or update apps from the play store. I can do these things via network data. A co-worker has no problem with her GS6 on the same network. Anyone else having this problem?
Nope. And works fine on other WiFi networks?
Sent from my SM-G935F using Tapatalk
---------- Post added at 12:04 AM ---------- Previous post was at 12:02 AM ----------
Most likely being blocked by firewall or the like but that doesn't explain why your colleague can use fine
Sent from my SM-G935F using Tapatalk
Haven't tried any other network yet, but I will this evening. Also need to mention another co-worker got a GS7 yesterday and is experiencing the same problem as me. He didn't mention another network and I realize that will be an important piece of information.
Would a firewall allow me to browse and speedtest?
Mine has the exact same issue. It simply won't use wifi for apps other than Chrome. I tried doing some recovery mode steps I found on another site, but to no avail. I have tried it on my network at work and then my home network and still the same. I am going by the Verizon store tomorrow to hopefully get it resolved, unless someone in this arena knows what to do.
Same here. Got my S7 yesterday and 1. Play store will not download apps on wifi but I can browse surprisingly. 2. It seems my wifi signal is weak. I have tried using both my 5 and my 2.4 off my router. Same issue. Taking it tonwork today to see how it does.
Update, but no solution. I am able to do everything on my home wifi network. However, my office network WILL allow me to browse with chrome, do a speedtest, DOWNLOAD apps from Amazon. It will NOT let me download or update apps from the play store and it will not let me stream from Pandora.
Does this make sense to anyone?
My wifi issue is a bit different. It seems to randomly connect/disconnect me at work, but my home network is fine. Never had an issue before this phone.
I had a similar issue and a reboot of my router fixed it..The issue was most notable when downloading from the market
Maybe we don't go to work. Problem solved. lol
Had the same problem as you guys, found this on another site posted in 2014 by djsusant - worked for me
1. SWITCH OFF YOUR MOBILE DATA.
2. SWITCH ON YOUR WI-FI.
3. SWITCH ON FLIGHT MODE.
4. RESTART YOUR PHONE. (KEEP ACTIVATED FLIGHT MODE & WI-FI)
5. AFTER RESTART DON'T SWITCH OFF FLIGHT MODE.
6. OPEN GOOGLE PLAY. WAIT FOR OPEN.
SEE IT WILL OPEN GOOGLE APPS
7. NOW YOU CAN SWITCH OFF FLIGHT MODE.
Hope that helps
kmyers8807 said:
Had the same problem as you guys, found this on another site posted in 2014 by djsusant - worked for me
1. SWITCH OFF YOUR MOBILE DATA.
2. SWITCH ON YOUR WI-FI.
3. SWITCH ON FLIGHT MODE.
4. RESTART YOUR PHONE. (KEEP ACTIVATED FLIGHT MODE & WI-FI)
5. AFTER RESTART DON'T SWITCH OFF FLIGHT MODE.
6. OPEN GOOGLE PLAY. WAIT FOR OPEN.
SEE IT WILL OPEN GOOGLE APPS
7. NOW YOU CAN SWITCH OFF FLIGHT MODE.
Hope that helps
Click to expand...
Click to collapse
Thanks , I tried that when I got to work. It didn't help. I found out that I can download and stream from amazon music but I cant download or stream from the play store or pandora. I wish I knew more about networking, I'd check the settings on our routers.
Having similar problem on home wifi. I have reset home router. I can download and update if I turn off wifi. With wifi on I can browse with chrome. Have to keep turning wifi on and off to do things.
have the same issue except it will work at the store I purchased at but not at home. Tried every remedy but factory reboot so far. There is a great signal to the phone at home but won't download any apps. Facebook etc seem to come in but I didn't purchase this phone for FB. Any help will be appreciated as Samsung reps have been no help.
Pandora isn't working on mine either, not sure if it's a wifi issue only as service is very poor here (much worse than the old G3, tradeoff for battery I spose) so cannot isolate the cause. Will do later. The steps above didnt fix it.
No Pandora and not being able to read the SD card from cpu will probably be deal breakers for me if they aren't fixed within the 30 day trial. Shame, because there's a lot to like with it.
I can say just one thing - at least on the 802.11n networks the signal reception is much lower than e.g. on Sony Xperia Z3 compact .... that is little disappointing .... I was kinda hoping that brand new super ultra class phone with a/b/g/n/ac modem will have also super ultra good signal reception ...
I have the edge and I'm experiencing similar issues. I've also noticed that backups and even ones through Google photos will not work on wifi.
My previous response seems to be only temporary. Ive been doing the DNSet app and it works. So it looks like something on googles end, hopefully they fix it soon
I bought a GS7 edge and have faced the same issues. Unable to download/update any apps via wifi at home. Using a netgear AC router. All my other devices work fine. I've tried restarting the router. Didn't help. Tried both 2.4 and 5G connections as well. What's weirder is the phone works flawlessly on other wifi networks (school and the best buy store I bought it from when I went back to talk to them about it, it even worked off a tethering connection off the rep's phone)
Try switching wifi secirity from AES to TKIP. It helped me with S6 wifi issues
UPDATE
ashabaik said:
I bought a GS7 edge and have faced the same issues. Unable to download/update any apps via wifi at home. Using a netgear AC router. All my other devices work fine. I've tried restarting the router. Didn't help. Tried both 2.4 and 5G connections as well. What's weirder is the phone works flawlessly on other wifi networks (school and the best buy store I bought it from when I went back to talk to them about it, it even worked off a tethering connection off the rep's phone)
Click to expand...
Click to collapse
UPDATE (3/15/16)
So we were able to fix the issue as of last night by changing the advanced settings of the network we were connected to on the phone to static IP. This fixed the google play app issues but oculus apps still wouldn't download. We then turned off enhanced 4G LTE and that seemed to remedy it. Phone as of now works fine, hoping this doesn't cause anything else but will be talking to store reps about this soon.