WiFi Connected but no Internet Access - T-Mobile Samsung Galaxy S II SGH-T989

My WiFi eventually stops working. It's been working fine for two months but for these last two weeks, it would not connect to any wifi network, regardless if it were home, someone else's home, or even the wifi at my school.
If it helps any, I'm running juggernaut 4.1 with bullet kernel.
I've looked around to the related threads but there was never a solid fix. Anyone have any insight on my problem?

bump? Any help?

Well if a clean instal doesnt fix it your phone probably needs replacing
Sent from my SGH-T989 using XDA App

It works like 75% of the time. It works when I reset it sometimes. It's not a "never works" type of thing. Do I still really need to replace my phone?

I have a smiliar problem, Once I disconnect from Wi-Fi and then try to connect to any network, it would say it's connected with full signal strength yet there would be no connection...
Not exactly sure if that's the problem you're having, but so far the fix I've found for my problem is to boot into recovery, wipe battery stats and fix permissions and then it's good to go. Only problem is it sucks having to reboot your phone everytime you have to connect to a new Wi-Fi network...

I had the same problem as you. The wifi icon had all the signal but still did work just on my phone... I tested it on my PC and it was all fine. I decided to go back to stock then reroot again. It fix it a little bit bit still happens sometimes
I suggested unroot it via Odin then test the issue for a few days on stock. Just to see what the problem is. Then root if wish
Sent from my SGH-T989 using Tapatalk

Weird... I seem to have this problem too!
Sometimes my WiFi says connected Excellent connection, but it does not work. I know my internet works because my PC works fine.
I just disconnect WiFi and use 4G, yeah it's a lot slower, but it is manageable.
WiFi seems to randomly want to work.

kvizz said:
Weird... I seem to have this problem too!
Sometimes my WiFi says connected Excellent connection, but it does not work. I know my internet works because my PC works fine.
I just disconnect WiFi and use 4G, yeah it's a lot slower, but it is manageable.
WiFi seems to randomly want to work.
Click to expand...
Click to collapse
Yeah it sucks... It was working normally before but not its mess up

I still haven't found a solution to this problem. My only solution has been to disable wifi, turn on data, turn off data, turn wifi back on, and it will work.
With this information, does anyone know what's wrong? I have restored back to my freshly rooted nandroid and wiped and reflashed to three different roms, all with the same wifi issue.

Is there anyone with a solution?

Try this:
turn off wifi, then...
in adb shell:
su
rm /data/misc/dhcp/dhcpcd-eth0.lease
rm /data/misc/dhcp/dhcpcd-eth0.pid
or:
if you dont want to use shell, get Root Explorer (or equivalent) and navigate to /data/misc/dhcp/ and delete those files.
then:
restart wifi. You may need to reboot.

minotauri said:
Try this:
turn off wifi, then...
in adb shell:
su
rm /data/misc/dhcp/dhcpcd-eth0.lease
rm /data/misc/dhcp/dhcpcd-eth0.pid
or:
if you dont want to use shell, get Root Explorer (or equivalent) and navigate to /data/misc/dhcp/ and delete those files.
then:
restart wifi. You may need to reboot.
Click to expand...
Click to collapse
I can't find those files. They don't seem to exist in my phone.
So far the only way I have been forced to turn on airplane mode and switch it off to use my wifi. I have to do this every half an hour or so. Does anyone have a more permanent solution?

same issue here. on wifi or on data, it will just drop, even though i have full wifi bars. I get between 75-100% packet loss. Sometimes jumping to airplane mode and back fixes it. Sometimes jumping to data and back to wifi, rebooting fixes it.....it seems.....for a while. Tried multiple roms/kernels. Same issue. during all this, my phone will try to sync data (2 gmail accounts) and just chug and chug, heat up my phone, and drain my battery. Any ideas?
I deleted those files, rebooted, lets see what happens.

T-mobile my account..... Do u have it installed? If so freeze it or uninstall it and problem will go away. I had same problem made a thread and posted my findings and turned out lots of people had similar issue of wifi sometimes working or both data and wifi signal showing when only wifi supposed to be on, wifi losing connection after a little bit. etc. In the end tmobile my account was the culprit

nope. No tmo my account, no green (or whatever) battery saver.
Deleted those files, and still had issues yesterday and today.

I had this problem. turns out my sgsii wasn't playing nice with my wrt 400n, gradually lost connection more frequently. flipped back to the trusty linksys g router, never had a problem since. I think it has something to do with n.

Turns out that it happens with all routers - for me anyway. It just loses internet every 20 minutes or so even while I'm still connected to the router.

Related

[Q] 4G problem?

I am able to connect to 4G when first booting the EVO (which is running CM7 RC2 by the way) using the built in tethering options which work just fine I am able to connect and stay connected for about an hour or sometimes more but other times I have lost connection and it will not reconnect. In the WiMAX settings it shows
Scanning...
Connecting...
Connected (if working otherwise after the Connecting status it'll show nothing and stay that way.)
Anyone else have this problem or have found a way to fix this? I have found that only by rebooting the phone that it works again.
it not reconnecting is a cm7 bug. either reboot or run a terminal command (which i am forgetting) its something like killall dhcpip
thanks for the info
I have the same problem. For some reason the phone seems to hang between 3G and 4G.
Reboot works, but I am not sure if this is a dhcp issue or another event causes it. It could even be heat related since I often get this during usb tether and the phone may be on the warm side. Google tether seemed to have a temp monitor but the cm7 thether does not. Is there a good temp app to check if this is the case?
4G hang shots.
I have no idea why things like youtube or voice search show up from time to time
I am not sure what to make of the overwhelming response

Please help: juicedefender messed up my desire

Hi,
can anyone please help me? I recently downloaded and used JuiceDefender on my Desire. I configured a setting that allows the phone to learn what are the Wifi networks that I like to connect to, based on location. I soon noticed that the phone randomely reboots so I uninstalled this application. Well, I completely lost control of my Wifi connection. Even if I turn it off in Android settings, the Wifi just starts by itself and starts scanning for networks, which completely drains my battery. I installed the application again and reversed the location wifi setting but it did not help.
I also did a backup then wiped up my phone, but the Wifi still starts by itself. Is there any solution to this?
Thank you!
hi,
did a backup then wiped up my phone,
Click to expand...
Click to collapse
and the did you restore your backup?? if so i woulfd advice to clear data juice defendre and maybe mail to dev'app
thank you for your answer.
First I uninstalled juicedefender. after seeing that wifi still gets connected, i backed up, i wiped all data on the phone and restored the back up, but without juicedefender (it was not included in the backup). As for the email to the developers, I did that, but I got a response like that: "I don;t think this is possible. Please install our beta application and enjoy." How helpful of them!
Some suggestions
I would be surprised if any app could reboot the phone, even if it crashed.
Do you use tasker or locale? They can start up the wifi.
You could try org.wahtod.wififixer
You could also use something like com.mapeapps.networkcounter to check what is using the wifi. You'll have to reboot after installing it to reset the counters, but then, if it locks on to a wifi straight away, you could see what's using the connection, and maybe work out what's starting it up?
Thank you, I will try what you said. Sometimes the Wifi is just starting, but sometimes it also starts when I open any application that requires an internet connection, even if my data connection is already on. I will come back to report on what you suggested. Thanks again!
I forgot to say that I am not using a tasker. I do have enabled the location services based on network, but I have always had that before, and if the wifi was disconnected in the android settings, then it stayed off. Now it just won;t stay off. The thing is that I don;'t even need wifi, I have a good data plan. But the damn wifi just starts by itself, scanning for networks all the time, draining my battery and interrupting my regular data connection. I am so frustrated! I never had problems with my Desire for one year, and now, after installing this JuideDefender, problems are coming in.
Ok there are a couple of things:
a) If your Wifi is still broken after you uninstalled JD it is most likely not JD who was / is the culprit. You even wiped, so how should JD do this?
b) JD does not turn Wifi back on when you manually turn it off (I am not 100% sure what happens during the training phase, while JD learns you Wifi-Locations, because in these 1-3 days JD might turn Wifi on in "random" locations to enhance the algorithm)
What does the log in JD say (anything about turning Wifi on?)?
Hello,
the JD log says: WIFI turned on by user.
Which of course I have not done. I think my phone is haunted. Leaving JD aside (even if this problem started only after I started to use JD), the problem still exists: my phone turns its WIFI connection by itself, even if I don't want that!

WiFi failed to connect. Speed to slow.

So I'm running stock 4.4.2 Rooted, and as of 2 weeks ago, I'm unable to connect to wifi at my gym. The signal strength is strong, yet I try to connect and after awhile of attempting to connect over and over again nothing happens, but sometimes I get an error saying "failed to connect, network to slow" or something along those lines. My wifi works perfect fine at home though. All info I could find just leads to factory reset which won't happen for me. I've deleted that wifi over and over and put the password in again several times, no change. It's only me with this issue though and as I said, friends with the exact same setup can connect perfectly fine. This just happened out of no where one week after working fine.
Well now that I think of it, over a period of two more weeks before the no connection at all issue, it was starting to turn into a crawl for speed but only for me.. Stock everything Rooted, and stock kernel.
ReapersDeath said:
So I'm running stock 4.4.2 Rooted, and as of 2 weeks ago, I'm unable to connect to WiFi at my gym. The signal strength is strong, yet I try to connect and after awhile of attempting to connect over and over again nothing happens, but sometimes I get an error saying "failed to connect, network to slow" or something along those lines. My WiFi works perfect fine at home though. All info I could find just leads to factory reset which won't happen for me. I've deleted that WiFi over and over and put the password in again several times, no change. It's only me with this issue though and as I said, friends with the exact same setup can connect perfectly fine. This just happened out of no where one week after working fine.
Well now that I think of it, over a period of two more weeks before the no connection at all issue, it was starting to turn into a crawl for speed but only for me.. Stock everything Rooted, and stock kernel.
Click to expand...
Click to collapse
.....have the gym reset their router..... cause if you can still connect to other WiFi out there then i think it less of your phone and more of the router at fault here
Well, then why is only my phone effected? People with the same version and Rooted and such don't have this issue
ReapersDeath said:
Well, then why is only my phone effected? People with the same version and Rooted and such don't have this issue
Click to expand...
Click to collapse
is your phone ND8 or NDC??
ND8
ReapersDeath said:
ND8
Click to expand...
Click to collapse
my only other suggestion would be to flash Ktoonez(might have misspelled his username) TW Kernel and Tweaker and to Flash the NDC modem; from personal experience NDC modem gives me better 4g signal....yet it also gives me better WIFI signal as well as connectivity, some will say it doesn't affect WIFI but it did for me so you can try that since you don't want to Factory Data reset it.
Well my phones disconnected anyhow. I can only use wifi really so I keep it in airplane mode with wifi enabled

[Q] Major WiFi issue out of nowhere?

Hey all. I need some advice. This morning my G3 (D850) dropped WiFi connection for no reason. It says the signal is good but the network info says saved, secured. It will attempt to connect over and over again and if it does connect the signal is weak as can be and it drops the connection within 2 seconds. My coworker has a G3 also and is connected to the same work network I am. His connection says excellent where as mine said good. His device connects just fine with full bars. I'm baffled. I've already tried manually selecting 2.4 Ghz and 5 Ghz instead of auto select and that didn't help at all. I've tried manually turning off WiFi and turning it back on. I've tried turning airplane mode on and then off to refresh the connection and that didn't help. I've done a battery pull as someone in one of the android authority forums suggested that (apparently I am not the only one having this issue.), didn't work. I've unchecked WiFi optimization - no dice. There was another post on a different forum here on XDA that said turning off WiFi and then deleting the WiFi config folder located in data/etc/wifi and then rebooting fixed the issue for them so I tried that. After reboot when I tried to turn on WiFi my G3 rebooted itself. Does it everytime. SO, I had to restore to a nandroid backup (btw I'm on rooted stock 10f) to get the phone to stop hating my WiFi toggle attempts. Last ditch effort I did a factory reset hoping for an easy fix... Nope. I don't know what else to try. It was fine yesterday all day. This morning it was perfectly fine and then randomly started having this issue. I haven't altered any system files whatsoever. I really don't want to send my device to LG for warranty replacement so I'm hoping someone can help me out that may have had this issue and resolved it. The only difference between my device and my coworkers device is he is still on 10d and I am on 10f. That could be the issue I guess but that doesn't really explain why my device has been perfectly fine until this morning and I've been on rooted 10f for weeks. I am planning on flashing back to straight bone factory stock 10d when I get home here in a few hours from work but Idk if that will help or not. Judging from the amount of google search results of "LG G3 WiFi connection problems" this seems to be an issue for several people. I won't know if it's on the software side or hardware side until I get home but in the meantime has anyone had these issues at all? People have had success in changing to Static IP but I would have to do that for every connection I attempt to connect to and that's a pain in the a$$. Also, that does nothing to identify the root cause of the issue. Any help would be greatly appreciated. =)
BreakingVZW said:
to much words
Click to expand...
Click to collapse
try deleting /data/misc/wifi then reboot, it that doesn't work try an other kernel(rin kernel is good)
suljo94 said:
try deleting /data/misc/wifi then reboot, it that doesn't work try an other kernel(rin kernel is good)
Click to expand...
Click to collapse
Thanks for the reply. So it turned out my phone just randomly decided it doesn't like my work network anymore. Idk why lol. I got home and it hooked right into WiFi. Gf's WiFi and open networks as well. I call shenanigans. I went ahead and flashed back to 10d anyway though.
BreakingVZW said:
Thanks for the reply. So it turned out my phone just randomly decided it doesn't like my work network anymore. Idk why lol. I got home and it hooked right into WiFi. Gf's WiFi and open networks as well. I call shenanigans. I went ahead and flashed back to 10d anyway though.
Click to expand...
Click to collapse
I am having the same issue! But it is happening in other networks too...sometimes I get the phone to connect but it only works for a while and when I check the networks it only says Saved, even if I try to connect again
Having the same issue, whether at work or home, my wifi has become near useless. I've even gone as far as trying a different ROM. Didn't work.
Same thing here
I also have tried factory reset, installed a new ROM, changed settings in my router... but the problem remains I don't know what to do anymore, I use wifi a lot!! I searched through other topics but no one seem to know how to solve it. Unfortunately my warranty already expired, I took my phone to some technicians but honestly it didn't help at all...they all said it was a software bug and I should wait for an update but if it was just that a new ROM would fix it,right?
I am not very familiar with phone hardware but I assume that if it was a hardware problem I wouldn't be able to turn it on or connect to any network, right?? (any experts here???)
Any solution is welcomed.
anyone please?? :crying:
P.S : I tried a new baseband, new kernel and new ROMs. So far, nothing changed.
I can connect sometimes but get kicked out within minutes. At other times I only get the saved,secured message.
This is happening in every network

WiFi not working properly v20b

I have installed v20b, everything works fine except WiFi: after sometime the connection just doesnt work and i have to turn off and on again the WiFi. This just happened to me at least 10 times
ImSpiderman said:
I have installed v20b, everything works fine except WiFi: after sometime the connection just doesnt work and i have to turn off and on again the WiFi. This just happened to me at least 10 times
Click to expand...
Click to collapse
try to reset your phone it should help and backup before i am also on v20b and no problems with wifi on my phone till now (upgraded and factory reseted)
I did it before flashing the rom because i was on cm13, dont think that another reset can help :/
ImSpiderman said:
I have installed v20b, everything works fine except WiFi: after sometime the connection just doesnt work and i have to turn off and on again the WiFi. This just happened to me at least 10 times
Click to expand...
Click to collapse
I do have this on IEEE 802.1X networks only. Also on Android 5.1. This seems to be regardless of root/no root.
Jens1969 said:
I do have this on IEEE 802.1X networks only. Also on Android 5.1. This seems to be regardless of root/no root.
Click to expand...
Click to collapse
Had WiFi dropouts on every LG ROM on this device.
It would drop on any WiFi network I tried. My old phone and all other devices have no issues at all.
Bit the bullet and unlocked bootloader and went to CM13, rock solid WiFi now. IMO LG's software is borked.
Adam86 said:
Had WiFi dropouts on every LG ROM on this device.
It would drop on any WiFi network I tried. My old phone and all other devices have no issues at all.
Bit the bullet and unlocked bootloader and went to CM13, rock solid WiFi now. IMO LG's software is borked.
Click to expand...
Click to collapse
Whats the easiest way to unlock BL? do you have to download the file from android thats 1 plus gig big and do it thru that ?
awes0me1 said:
Whats the easiest way to unlock BL? do you have to download the file from android thats 1 plus gig big and do it thru that ?
Click to expand...
Click to collapse
Right now there is only one way: LG Developer program.
I think that is problem with 6.0
My network is ipv4 and i think phone force ipv6. In developer options have option to use lollipop settings but i think that is not doing any better
There was an issue with Verizon 12B that was recalled with similar issues.
Never had Wi-Fi issues otherwise. It was patched in 13B
ImSpiderman said:
I have installed v20b, everything works fine except WiFi: after sometime the connection just doesnt work and i have to turn off and on again the WiFi. This just happened to me at least 10 times
Click to expand...
Click to collapse
Same with me on 20a... wifi connects but there's no internet connectivity. Then it comes good for a while but eventually drops the wifi connection completely. Sometimes it forgets the wifi password and I have to re-enter it. Makes the phone essentially useless on wifi. A factory reset seems to be the next step unless anyone has any other suggestions?
Same problem on 20b
The WiFi problem seems to have settled down for me now. I went on a binge of uninstalling and reinstalling apps, cleared all app caches, rebooted several times, and recited some incantations (mostly beginning with f). I haven't spent a lot of time using it on WiFi but it seems a lot more stable. Will keep an eye on it and see how it goes.
I came back to a stock based ROM from CM13 because the lack of camera functionality and all my WiFi dropouts are back again. This is really disappointing with this phone as it is completely random and none of my other phones/devices have ever had problems like this. End of my tether with it to be honest, this phone will be going on eBay at this rate.
Well I've been running catlog tonight and it didn't take long for the WiFi to blip.
If there are any catlog experts out there I would really appreciate it if anyone could have a look to see if there is any indication of what is causing this random disconnection and then reconnect shortly afterwards
Many thanks in advance.
Sorry, can't help with the catlog. But having same problems.
I did 3 hard-resets with always the same result: wifi works fine for 1-2 days, than breaks.
The connection is strong an seems stable but data-throughput and ping times are ugly (0,4 Mb down, ping around 2-3 seconds).
Here's a screenshot that perfectly shows the impact: same phone, same setup, same wifi. just 1 day between the tests.
i.imgur[dot]com/JYI7b9I.jpg (sorry, can not upload pics)
Any ideas how to fix this? a DNS problem?
btw: IPv6 is disabled on the router.
I have the same problem and i found a solution for me. I'm using pebble smartwatch with G4 and i noticed that when i disconnect my watch or turn off bluetooth, wifi stays stable. If you have a bluetooth device like me you can try this method.
PixPi said:
I have the same problem and i found a solution for me. I'm using pebble smartwatch with G4 and i noticed that when i disconnect my watch or turn off bluetooth, wifi stays stable. If you have a bluetooth device like me you can try this method.
Click to expand...
Click to collapse
I've also had my G4 get into a state where Bluetooth is stopping WiFi from working. I posted a thread about this here. To summarise, I've twice gotten into the state where my WiFi disconnects whenever I put the phone to sleep. When it wakes up, it takes ages to reconnect. Sometimes it fails to authenticate and forgets the password for the WiFi network. Even when it is connected, the connection is very flaky. This only happens when I'm on a 2.4Ghz network and Bluetooth is enabled - if I disable Bluetooth or switch to my 5Ghz network then WiFi is ok.
I've had this happen to me twice now... the first time was straight after the update to MM. I fixed it by uninstalling and reinstalling apps, and eventually it came good. After a few weeks the phone got into that state again. I tried clearing cache, factory reset, and reinstalling MM using the LG Bridge "Update error recovery" option and nothing helped. Once again I went through my apps one by one and uninstalled and reinstalled them and once again the phone came good.
This is a huge pain in the butt... not sure how long the phone will hold out before it gets into this state again. I really hope there's a MM update that addresses this soon.
sladflob said:
I've also had my G4 get into a state where Bluetooth is stopping WiFi from working. I posted a thread about this here. To summarise, I've twice gotten into the state where my WiFi disconnects whenever I put the phone to sleep. When it wakes up, it takes ages to reconnect. Sometimes it fails to authenticate and forgets the password for the WiFi network. Even when it is connected, the connection is very flaky. This only happens when I'm on a 2.4Ghz network and Bluetooth is enabled - if I disable Bluetooth or switch to my 5Ghz network then WiFi is ok.
I've had this happen to me twice now... the first time was straight after the update to MM. I fixed it by uninstalling and reinstalling apps, and eventually it came good. After a few weeks the phone got into that state again. I tried clearing cache, factory reset, and reinstalling MM using the LG Bridge "Update error recovery" option and nothing helped. Once again I went through my apps one by one and uninstalled and reinstalled them and once again the phone came good.
This is a huge pain in the butt... not sure how long the phone will hold out before it gets into this state again. I really hope there's a MM update that addresses this soon.
Click to expand...
Click to collapse
I've noticed my Bluetooth problem in two ways. One of them was connecting a Bluetooth speaker while the watch is connected. When i connected speaker too, wifi had no issues.
And the other situation that i made my wifi stable was going into safe mode. Even Bluetooth on i was able to connect and stay connected to wifi when i was in safe mode.
Which apps did you have to reinstall? Do you remember?
Sent from my LG-H815 using Tapatalk
ImSpiderman said:
I have installed v20b, everything works fine except WiFi: after sometime the connection just doesnt work and i have to turn off and on again the WiFi. This just happened to me at least 10 times
Click to expand...
Click to collapse
This not 6.0 issue This horror exist on 5.1. same...
I try som stuff but not working the issue still alive....
PixPi said:
And the other situation that i made my wifi stable was going into safe mode. Even Bluetooth on i was able to connect and stay connected to wifi when i was in safe mode.
Click to expand...
Click to collapse
Yes, I noticed this too... everything worked fine in safe mode.
Which apps did you have to reinstall? Do you remember?
Click to expand...
Click to collapse
I just started going down my app list and uninstalling apps which looked like they might have something to do with bluetooth, then putting the phone to sleep and waking it up to see if the problem was still there. I got a bit slack and maybe uninstalled two or three at a time before testing. I should have been more systematic about it but I wasn't really expecting it to work. I'm pretty sure the last one I uninstalled before things started working was TuneIn Radio so if you have that installed you might want to try uninstalling it. I've since reinstalled it and WiFi is still working.

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