Database Users

Wifi connected but doesnt work.

We have 3 SGS2 at home and a Billion 7800N modem
There is a recurring problem on my wifes phone where there is no dataflow. I cant even reach the modem. It will just start working all the sudden for a short period then stop again.
Things I have tried.
1. Using it right next to the router
2. have tried using different channel
3. have reset modem
4. made sure sleep policy is on never
5. Update firmware and hard reset phone - no new apps installed - worked at first but now having problems again.
It never loses wifi connectivity....internet just does not work. Turn 3g on...works fine.
What could be the problem?
Only things I can think of
1. Faulty phone
2. Virus? That phone is sometimes used to check out Chinese websites...and I know some of them can be dodgy. I forgot to ask her not to go to any of those sites after the hard reset as trial and error.
3. Not certain but this problem may only started when we updated to 2.3.4.
If need be Ill hard reset AGAIN when XXKG6 is out - I dont want to flash back to 2.3.3 to try

auswill2 said:
What could be the problem?
Click to expand...
Click to collapse
I have the impression, that the Broadcom WiFi drivers of Android are still buggy, because my Asus Transformer's WiFi also isn't very good.
When using a static IP address and setting Google's free DNS 8.8.8.8 as a secondary DNS server (the router as primary), my SGS2's WiFi works best.
Maybe give it a try.

I have the exact setup and tried all the things you mentioned to no avail. It works sporadically after I reset the phone wifi on and off but it won't maintain data connection for long. Although the signal indicator says it is still connected. the billion 7800 works on my wifes sgs and connects without problem to my work htc legend.
Sent from my GT-I9100 using XDA App

If you google for "galaxy s2 wifi no internet", you'll find out, that several SGS2 owners have exactly the same problem.
I all cases it seems to be the router's firmware, that causes this problem. I found two users reporting, that the only solution was to download a new firmware from ...
http://dd-wrt.com
But maybe it helps to drop the speed from 802.11 N to G?

I have the exact same problem and my firmwire on my router is the latest. What I do to fix this problem is just unplug my router and plug it back in. I find that fixes it for me. Post back if that doesn't work
Sent from my Nexus S using XDA App

isinisterx said:
... firmwire on my router is the latest.
Click to expand...
Click to collapse
That's why two guys reported, that they had to download a new FW from DD-WRT, which solved the problem for them.
Sorry, that I don't post links ... it were german forums.

I have the exact same problem. You say that the other two S2's work perfectly? If that's the case then it must be a hardware fault. I'm gonna take mine to be fixed or replaced.

steviewonders said:
If that's the case then it must be a hardware fault.
Click to expand...
Click to collapse
Likely ... maybe different firmware?

Yes....my SGS2 and my brothers work fine. When I update....I update all 3 so we are all using the same firmware.
Thats why I believe its a problem specific to 1 phone....not the router (although I did update my router to latest firmware just in case.....same problem)
As a side note - my brother has a microphone echo problem when using a specific gel case. When my wife and I use the exact same case - no problem. I dont know how Samsung build their phones - but its not very consistent.

auswill2 said:
Thats why I believe its a problem specific to 1 phone...
Click to expand...
Click to collapse
Shure ... in this case THIS phone has a hardware defect.
I dont know how Samsung build their phones - but its not very consistent.
Click to expand...
Click to collapse
That's why we have a thread about the "Made in ..."
But that's not only a Samsung problem ... I know that from the Asus Transformer forum.

Ill see where our phones are made if I have time. If anything though, my brother should be the odd 1 out as his was bought in Australia whereas I got the other 2 from UK.
Ill get to the bottom of this....even if I have to keep doing hard reset and trial and error tests. Not being able to use wifi is a huge deal.

Just to confirm, the problem's not only apparent in 2.3.4. My phone has the same problem with 2.3.3. I've sent my phone in for repair now so i'll post my findings here in a week or so. Have you got any further with it?

I sure hope they do fix it somehow....It's becoming increasingly annoying having to flick wifi on and off, downloading apps is the worst. This never happened on mine or my girlfriends htc's.

Anyone able to find a solution for this problem? Just picked up my Galaxy S2 and have the exact same issue Wifi connects, surf the net for about 10 sec, then nothing.. still connected to Wifi and everything.
At work at the moment so can't really play around with the router settings but will try once I get home. Have been looking forward to getting this phone for a while now and to have Wifi issues right off the bat is quite disappointing..

wifi connected no data flow
i had the same problem
i tried different ways no sucess
i tried Set DNS Pro from market
tried different settings
applied different dns
shift from open , custom to google ang keep checking the internet in browser
after few try it works everytime
its to do with assigning ip address in android
thanks

I posted a solution a few weeks back....but i think most people overlooked it....so the solution is
Go to settings>>>>wireless and networks>>>>>wifi settings>>>>hit menu and go to advanced>>>>regulatory domain>>>>change the channel to 14.....thts it....it worked for me on vibrant,nexus one and even on sgs2..hope this helps
Sent from my GT-I9100 using XDA App

zainqaiser said:
change the channel to 14
Click to expand...
Click to collapse
Channel 14 is not allowed in most countries ... my german router e.g. doesn't have channel 14, only 1-13.
I had similar issues with my Asus Transformer and found out, that a static IP works best, BUT only if a secondary DNS is assigned too. I used Google's 8.8.8.8
Give it a try. The Broadcom drivers seem to have a bug, when no secondary DNS is assigned.

The "regulatory domain" setting isn't there on my galaxy s2 ;/ Will give the static IP solution a try.

zainqaiser said:
I posted a solution a few weeks back....but i think most people overlooked it....so the solution is
Go to settings>>>>wireless and networks>>>>>wifi settings>>>>hit menu and go to advanced>>>>regulatory domain>>>>change the channel to 14.....thts it....it worked for me on vibrant,nexus one and even on sgs2..hope this helps
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
thx mate ..... this worked for me

I have the same problem currently on 2.3.4 (KH3) and I also had it on 2.3.3 (KF3).
I currently can't find the Regulatory Domain setting.

Is possible to have this WiFi issue?

Hi!
Well, I have a very weird issue with custom ROMs and WiFi.
The history begins last sunday. I was using GingerDX wich is really great, but I had some problems with it, the most important was not being able to install apps in my SD card.
So, I switched to GingerXperia V22, this is a cool ROM too but I really don't like that my music lags when I turn my screen on. Also, the SE default dialer and Infinity view are bad and slow, but I didn't have the problem with WiFi, until I switched to XGin 6.2
Everything worked OK except for this:
El Brillantinas said:
I just realized a terrible and very weird error with this ROM:
I couldn't connect to The WiFi of my mate's office (where Im currently working). But the weirdest thing was the modem worked fine before trying to connect with my Xperia, but after turning the WiFi on, the modem just got busted and didn't work anymore!! So, no internet in the office computers, neither in my iPod, in my mate's smartphone, etc.! It was necessary to turn the modem off and then turning it on, and turning my X8's wifi off to make the modem working properly again.
Weird, huh?
I reflashed, and the error happened again.
So, I flashed back to the ROM I was using before (GingerXperia V22), and now the WiFi is working fine!
Anyone else with that same error or Im the only crazy around here?
Click to expand...
Click to collapse
I tried kuyaDROID and the same error happened.
I also did a full wipe... And nothing, the WiFi error remains on those two ROMs. So, Im currently using GingerXperia.
So, the question is: Is this really possible? And, is there any solution?

There may be some bug that's overloading it. Also was it the modem or the router? Cuz if it's wifi I would guess its the router but you said modem? I'd just use a different rom that works.
Sent from my LG-VM670 using XDA App

Grosskum said:
There may be some bug that's overloading it. Also was it the modem or the router? Cuz if it's wifi I would guess its the router but you said modem? I'd just use a different rom that works.
Sent from my LG-VM670 using XDA App
Click to expand...
Click to collapse
Guess is the router, where the wired networks are connected, it also gives the wireless signal.
As I said, Im sticking with GingerXperia, wich is not causing the error and Im connecting to WiFi with no problems. But I have personal problems with infinity view, SE's dialer and music lagging.
If is about a overloading bug, how could I fix it?
Im using stock kernel, btw.

To tell you the truth, I'm not actually that smart in this, but by overloading I meant that it might be trying to use too much data or something along that line, did it work fine over 3g?
Sent from my LG-VM670 using XDA App

Yeah, I didn't have any problems with 3G.

Don't really have any idea then, I've had problems with mange one device at a time but not fully crashing. Last advice would be that maybe the router has a limit to the number of connected devices it can have and your phone puts it over, try disconnecting one device then connect your phone
Sent from my LG-VM670 using XDA App

Grosskum said:
Don't really have any idea then, I've had problems with mange one device at a time but not fully crashing. Last advice would be that maybe the router has a limit to the number of connected devices it can have and your phone puts it over, try disconnecting one device then connect your phone
Sent from my LG-VM670 using XDA App
Click to expand...
Click to collapse
I already tried that, and the problem persists.
But this is a good excuse to read and learn eve more, it is a totally new problem for me hehe.
Thanks anyway, for giving suggestions.

I guess I'd try posting in your phones thread and the rom's also, might get better insight into the problem
Sent from my LG-VM670 using XDA App

To further assist you may I ask some questions;
1. What kernel are you using?
2. Have you tried connecting in other Access Point aside from the previous AP you are connecting with?
3. If using custom kernel did you delete all the modules in system/lib/modules?

Mika Dee said:
To further assist you may I ask some questions;
1. What kernel are you using?
2. Have you tried connecting in other Access Point aside from the previous AP you are connecting with?
3. If using custom kernel did you delete all the modules in system/lib/modules?
Click to expand...
Click to collapse
1. Im in stock kernel.
2. Nope, I didn't try it. I don't have internet in home, but I'd try in my girl's house.
3. same answer than 1.
Thanks for being interested in this curious case.

If your using stock kernel then you shouldn't have to encounter those issues as most roms esp kuyadroid as you mentioned earlier is made for stock rom. I suggest trying into public wifi access and see if you could be able to connect. You have to have two or more access point to test with as router might have different configs than your girls setup.

[Q] Acer Iconia A500 on 3.2.1 - Wifi problem

Hi...
I had been using my tab for over 4 months without any issues. My wifi has suddenly stopped working (tab gets connected to the wifi but the the icon doesn't turn blue and the network is not up). I had recently updated to 3.2.1 but it was working fine for a few weeks on that too.
I changed my Wifi router security from WEP to WPA and also tried using static IP. I even did a factory reset (apart from the hard and soft resets) and I still have the problem. It is not rooted (and I don't want to do that yet) and since I'm not able to connect to the internet, I can't use any market apps to fix the wifi issue (even if there is one). Appreciate some help on this. Thanks.

This was happening to me all the time pre 3.2.1. Updated, sometimes it still happens but a lot less. I don't have my tab in front of me but I did find a Wifi widget icon. All you do is press it once to turn Wifi off and then again to start it again. You can probably find an APK on Google and install through your computer.

Kjy posted a wifi fix over in his rom. Install it. It was Acer official so I know it will work with stock. Having a similar problem and thinking about installing myself.
Sent from my SAMSUNG-SGH-I997 using Tapatalk

Erik_T said:
Kjy posted a wifi fix over in his rom. Install it. It was Acer official so I know it will work with stock. Having a similar problem and thinking about installing myself.
Sent from my SAMSUNG-SGH-I997 using Tapatalk
Click to expand...
Click to collapse
Yea but don't you have to be rooted to install that which the OP said he didn't want to do.
I am having wifi signal strength issue with mine as well. I think I am going to sell mine to get something else. It seems like these units are notorious for lie signal strength which sort of defeats the purpose of a tablet. When my phone gets significantly better strength that is bad.
I think it might be because of the metal back cover and a poor antenna.
Sent from my ADR6425LVW using XDA App

Erik_T said:
Kjy posted a wifi fix over in his rom. Install it. It was Acer official so I know it will work with stock. Having a similar problem and thinking about installing myself.
Sent from my SAMSUNG-SGH-I997 using Tapatalk
Click to expand...
Click to collapse
Should I just go into recovery mode and install the specific file? Can you point me to the location of the fix?
Thanks.

Search this forum for the file... It's not hard to find. You'll need ClockworkMod to install it. Just flash on top of your rom, reset cache and (just to be sure) dalvik cache under advanced...
That actually only solves a part of the problem; the other part is the fairly weak antenna (just replace it, instructions are in this forum). The less intrusive solution is a repeater (~30 euro here in Germany).
Another good lead is to use a better WiFi AP. Cheap ones (particularly with those 10dbm antennas) tend to produce a lot of noise, which in turn triggers the driver bug (which seems to be the root of this evil) more often... this can be so bad it actually makes WiFi completely unusable (happened to me). The only solution to this is to spend a few extra bucks for some good router hardware (I use a Linksys/Cisco router and Huawei repeaters, all of which work fine).

Help Needed: Wi fi not working on Samsung Note 2

Hi all,
I've been using Samsung Note 2 since November 2012 and have never ever had any problems in operating Wi-fi.
However, suddenly, today morning, the wi-fi has stopped working in my office. What happens is the connection process breaks down at the Obtaining IP Address stage, and then it says "Network Disabled - Poor Connection". Never has this happened ever before.
There used to be regular reminders that used to come to me for updates. However, I have been ignoring those for 4-5 months. I hope that is not the cause for this problem.
Now, I know there is an existing thread for this exact same problem:
http://forum.xda-developers.com/showthread.php?t=2159603
However, PLEASE NOTE I am no techie.. I absolutely have no clue about the proposed solution(s) in this thread.. root files, DHCP, 4.1.2, 4.1.1, yadda yadda yadda - all GREEK to me.. I understood absolutely nothing from this..
Would really really appreciate if someone can provide a step by step solution guide for this problem to a guy who knows nothing about tech!
Looking forward to replies,
Paras

Wi fi Problem - Solution??
So the wi-fi works at the hotel, but doesn't work in the office!!
Could using an app called Wifi Static be a good solution?? (Couldn't post link as I'm a new user!)

Reset the AP in your office. If wifi works somewhere else besides your office it's probably the AP in your office.

I'm having the same issue too. IPhone connects fine but note 2 has issues.
Sent from my GT-N7100 using Tapatalk 2

[Q] Tab 4 7.0 forgets wifi

After an hour on the device it simply forgets it's connected. Even if I'm watching a movie it will stop aND say no connection. I've returned it once so I think it is software vs hardware. Anyone else?
Goofy

I had a 7.0 for a week and not one had problems
Sent from my HTC One_M8

Yeah mine does that also, not my fave, but I just turn the wifi off and then back on again. Sometimes it only stays on the wifi for 10 minutes! Hope there is a fix at some point.
Sent from my SM-T230NU using XDA Free mobile app

Seems like a Samsung issue....
Looks like all along the Galaxy lineup there are wifi issues.
I tried everything, preventing wifi from sleeping, using wifi fixer, nothing seems to work.
Sometimes my wifi will stay connected, the upload will work, but I get no download.
Rebooting wifi on quick toggle seems to only do the trick.

Have you all updated the software?
Sent from my HTC One_M8

smknutson said:
Have you all updated the software?
Sent from my HTC One_M8
Click to expand...
Click to collapse
Yep, I updated to the latest software the moment I received the tab

Hmm, have you tried with more than one WiFi connection?
Sent from my HTC One_M8

smknutson said:
Hmm, have you tried with more than one WiFi connection?
Sent from my HTC One_M8
Click to expand...
Click to collapse
Yep, seems to do it more often with a 5Ghz connection than 2.4 though.
None of my other 5Ghz devices (3 iPhones and an iPad) drop wifi.
Signal is on clearest channel available.
Pretty much isolated everything outside of this tablet.
I'm pretty techy with my home networking, so I'm at a loss with this one.

Yes, it has been updated and yes it has occurred on my home wifi, my work wifi, my doctor's office wifi, and unfortunately the hospital's wifi. All with the same outcome! My S5 doesn't do it nor did my S4 running Kit Kat.

So, still no fixes for this! As a previous poster now it is getting where if I'm playing a game it will drop after 10 minutes! I have power save off everything. While hitting the WIFI on off button works it is highly annoying! I want my WIFI all the time not when my tablet thinks I should!
Goofy

Think I have a solution http://tinyurl.com/nfbgxds
Hope 5th is will help out so far so good for me!

I just got this tab 4 7 inch last week and I am having the same problem with connections showing connected but not having any data transfer. The steps in the above link did not help for me.
I have updated to the latest firmware posted on sammobile, both the Canada version and the nook (BNN) version. Neither have made a difference.
I have found another thread in thisnforrum for this same problem, and there wasn't any solution there either.
I did find wha I think might be solution but haven't proofed it yet. in the build prop there was two "ro.carrier" lines. I think there is only supposed to be one, so I commented out one.
Original Example:
ro.carrier=wifi only
ro.carrier=unknown
Changed example:
ro.carrier=wifi only
#ro.carrier=unknown
If anybody can confirm this makes a difference or not please post results
EDIT::
After two weeks without problem anymore it appears the fix was the static IP address not the build prop change.
I found threads going back to at least 2007 about Samsung devices having trouble with dhcp and all the solutions being manually assign a static IP to the device.

Same issue here. Sometimes I have to cycle the WiFi every webpage!
Both of the above solutions didn't work for me, unfortunately.
Edit: Okay, I may have found the issue, at least for me. Turns out, the tablet was auto-assigning the same IP as my RasPi. After setting a static IP, everything looks okay from here. Hope this helps!

Changing to static IP did nothing, I was having to reset wifi on the tab every time I turned on the screen.
I even had wifi fixer constantly running.
Finally updated to NJ3 and everything is working properly.
Looks like it's a FW issue.

correction-
mrmazak said:
Example:
ro.carrier=wifi only
ro.carrier=unknown
Changed example:
ro.carrier=wifi only
#ro.carrier=unknown
If anybody can confirm this makes a difference or not please post results
EDIT::
After two weeks without problem anymore it appears the fix was the static IP address not the build prop change.
I found threads going back to at least 2007 about Samsung devices having trouble with dhcp and all the solutions being manually assign a static IP to the device.
Click to expand...
Click to collapse
It should be one line:
ro.carrier=wifi-only
Script can be added however by attacting to the rom on the correct line parameters and scripting for digital on board configuration (no smart card) QMAL gsm, gprs, 3g, 4g, even lte or 5g, or 6g, no sim card required researve slot for world phone, or dual networking. The problem is each phone has to be separately programmed so cell companiesnhave walked away from needing higher qualified employees by switching to smart cards. Cost way less and employes way less people and note, your phone didnt cost you a penny less. I been doing cell phone tweaking since the motorolla brick was cool. Currently I used Samsung Galaxy Note 8010 64-bit 32 gig converted to XAC (its the industry's mobile payment recieveing device you see at bars, its made from the model previous mentioned)[to-wit-it says on their site not to tell anyone about]-or else- build then added Debian, Jessie. Then switched the imei to XAC, installed the telephony.manager.is_network_roaming=true along with the prpper scripting for the support and am hooked up to Sask-Tell. Once I got it connected and registered so it had a sign in address with the system i swutched the imei to all 000000000000's now they dont even send me a bill. But it works. The guy at the phone company couldnt even tell me where i was calling him from and he said my phone was disconnected while I was on the phone with him from the disconnected number. lmfao have a good day.