Database Develop

The massive wifi problem that many experience

When I turn on my phone at work, the wireless connection (open unsecured) connects and works for a few minutes. After some time, it disconnects and without rebooting my phone, I cannot establish a wlan connection.
This is oly the case at work. At home it works flawlessly, but it is another network kind.
Anyone found a solution to this problem? I saw a lot of threads about this but no good answers.
I am using duttys v3.

Not sure. Perhaps there is some sort of time out on your work network for inactive devices, or dhcp ip releases or something weird and "networky" like that?
Or perhaps your phone is going into a power save mode if you are not using it?
Just general ideas, I don't have this particular problem

I dont think many people have this issue! you must not have a setting correct, try downloading KaiserTweak and adjusting the timeout and also take a look at the routers settings I find it strange that a business would have an open network for security issues

austinsnyc said:
I dont think many people have this issue! you must not have a setting correct, try downloading KaiserTweak and adjusting the timeout and also take a look at the routers settings I find it strange that a business would have an open network for security issues
Click to expand...
Click to collapse
I work at the university, and the network is unsecure. You have to enter login and pass at a webpage to gain access.
I cannot reconnect at all once ive been disconnected. So it should have anything to do with kaisertweak or timeouts.
I have tried every setting and combination. I have tried to select work/internet settings. Ive tried to tell the phone its a hidden network / not hidden network. I have tried to use power save / performance mode. Ive tried to turn off 3g, bluetooth, phone (everything basically).
When I tap connect, it says connecting and then it immediately goes to "active" and tries to connect to another network (which I dont have access to).

solwretep said:
When I turn on my phone at work, the wireless connection (open unsecured) connects and works for a few minutes. After some time, it disconnects and without rebooting my phone, I cannot establish a wlan connection.
This is oly the case at work. At home it works flawlessly, but it is another network kind.
Anyone found a solution to this problem? I saw a lot of threads about this but no good answers.
I am using duttys v3.
Click to expand...
Click to collapse
I have worked out the problem.. first if its a WPA enterprise connection, make sure its set to WORK and not INTERNET setting. it will work. my only works with schaps versions not duttys

on my old pda (Acer N50 premium) I had the same problem with my unis network... it would only work (if at all) for a few minutes then nada... but at home it was absolutely fine, quick stayed on and totally responsive... I wonder if it has something to do with the rubbish way unis run their IT...?

Wasted thread
Many do not have this issue.
According to what's being said here by the indiviuals with issues, you're having problems connecting to a certain network...not all networks.
If it were all networks; your device, settings, equipment or rom would be the common denomenator. Since it's one network, it's that network.
Just because a network is or appears to be available, that doesn't mean that you can connect to it.

dwny said:
Wasted thread
Many do not have this issue.
According to what's being said here by the indiviuals with issues, you're having problems connecting to a certain network...not all networks.
If it were all networks; your device, settings, equipment or rom would be the common denomenator. Since it's one network, it's that network.
Just because a network is or appears to be available, that doesn't mean that you can connect to it.
Click to expand...
Click to collapse
no, it could be the phone software. Lets says that a string is added to the registry if the network you are connected to disconnects you; a string that makes the phone cancel connections to the network. And lets assume that the network disconnected you because there is a hidden firewall in the phone software that blocks ping requests, thus making the network believe that the connection is lost and thus disconnecting you. Then we have a moment 22, which is basically something wrong with the phone.
As some readers already pointed out in this "wasted thread", when changing the rom (in one case) or when changing settings from "internet" to "work" (in the second case) there is a great possibility that this problem in fact has to do with phone software and not network.
In my case, it just happens to be neither of the mentioned solutions or any solution that I have found in other threads.

One thing you may want to check is that your wifi is set to max performance. The issue may also be that there is a DNS cache issue, in most cases it can be resolved by manually reconfiguring the connection.
I have been successful in configuring my phone's WLAN to connect to everything from open APS's, WEP, WPA, RADIUS and AP's with proxy redirects, so I can tell you that as with most cases, it's human error.

I have tried max performance.
How do I resolve a dns cache issue? Manually reconfiguring the network did not help (only thing that helps is a reboot).
seattleweb said:
One thing you may want to check is that your wifi is set to max performance. The issue may also be that there is a DNS cache issue, in most cases it can be resolved by manually reconfiguring the connection.
I have been successful in configuring my phone's WLAN to connect to everything from open APS's, WEP, WPA, RADIUS and AP's with proxy redirects, so I can tell you that as with most cases, it's human error.
Click to expand...
Click to collapse

Wifi Problems

Well I've had my Captivate for 3 months, and up until now it's been smooth sailing. Two days ago I came home and my power was off, and when it came back on I tried connecting to my router like usual, but now it won't connect. On the "wifi settings" menu it just says "obtaining ip address from..." for a few seconds then it says "disconnected" and goes back into "scanning..." mode. Also, under the "wifi networks" section it shows my network as "Disabled, secured with WPA/WPA2 PSK". (I am using a Linksys WRT54G with WPA2 security f.y.i.)
I've tried "forgetting" the network, I've deleted the whole file that remembers your networks, I've tried connecting via WPS button, I've double checked my password, I've power cycled my router, I've reset my router back to default and re-configured it...still nothing. It connects to the wifi on campus with no problems (in 4 different buildings), so obviously there is something wrong with my router setup.
If anyone has any advice on how to resolve this problem, it would be much appreciated!
**Also, I forgot to mention I am running Cognition v2.2 Beta 6

Bump for hope

Does anything else connect to your router
Sent from my SAMSUNG-SGH-I897 using XDA App

M3MPH1S said:
Well I've had my Captivate for 3 months, and up until now it's been smooth sailing. Two days ago I came home and my power was off, and when it came back on I tried connecting to my router like usual, but now it won't connect. On the "wifi settings" menu it just says "obtaining ip address from..." for a few seconds then it says "disconnected" and goes back into "scanning..." mode. Also, under the "wifi networks" section it shows my network as "Disabled, secured with WPA/WPA2 PSK". (I am using a Linksys WRT54G with WPA2 security f.y.i.)
I've tried "forgetting" the network, I've deleted the whole file that remembers your networks, I've tried connecting via WPS button, I've double checked my password, I've power cycled my router, I've reset my router back to default and re-configured it...still nothing. It connects to the wifi on campus with no problems (in 4 different buildings), so obviously there is something wrong with my router setup.
If anyone has any advice on how to resolve this problem, it would be much appreciated!
**Also, I forgot to mention I am running Cognition v2.2 Beta 6
Click to expand...
Click to collapse
Happened to me a few times. Only way I could get out of this was to restore to a previous backup, or install fresh again. By the way, I experienced this problem only on 2.2. Never happened on 2.1.

fatttire said:
Does anything else connect to your router
Sent from my SAMSUNG-SGH-I897 using XDA App
Click to expand...
Click to collapse
Unfortunately I don't have anything else with wireless to test.

Elaborating on the issue
I've encounter exactly the same problem described here.
Samsung Galaxy S I9000. Froyo (official version). Not rooted.
Now it is the first time it has happened, and still I have not found a solution (restarted the router, restarted the phone and made more tests).
Before the upgrade to Froyo it has never happened. After the upgrade it worked ok for several days untill now.
Several other deviced at home are well connected to the router.

Its just s stupid suggestion maybe... but have you tried to change channels with your router?
Sometimes is just a stupid channel issue....

I found out the answer to this problem. I had to connect using static addressing. It seems at some point, the captivate 2.2 roms get confused for some of us and it starts trying to assign an IP address already used.
In my case, I tried everything... rebooting phone, router, ect.
Laptop connects fine, Wii connects fine...
But, I decided to connect via static addressing... BAM connected perfectly and instantly.
Connecting to other DHCP networks seems to be hit and miss as well.
So, I'd suggest reflashing might be the overall fix. But if you're like me and cannot reflash right away, try static addressing till you can get around to it.

yukinok25 said:
Its just s stupid suggestion maybe... but have you tried to change channels with your router?
Sometimes is just a stupid channel issue....
Click to expand...
Click to collapse
Not stupid at all, but unfortunately yes, I tried a couple different channels and still nothing.

DigitalEagle said:
I found out the answer to this problem. I had to connect using static addressing. It seems at some point, the captivate 2.2 roms get confused for some of us and it starts trying to assign an IP address already used.
In my case, I tried everything... rebooting phone, router, ect.
Laptop connects fine, Wii connects fine...
But, I decided to connect via static addressing... BAM connected perfectly and instantly.
Connecting to other DHCP networks seems to be hit and miss as well.
So, I'd suggest reflashing might be the overall fix. But if you're like me and cannot reflash right away, try static addressing till you can get around to it.
Click to expand...
Click to collapse
Awesome! This sounds like a promising solution, thanks. Yeah I need to reflash soon anyway seeing as how Cognition is up to 2.4.x already...
Probably won't be tonight, but I will do this soon and let you know my results.

Alright, I have typed just about every keyword into google relating to setting up my router/phone to use a static IP and for some amazing reason there are ZERO results that have any information whatsoever about setting up a static ip on a phone. This is really frustrating, so if anyone would be kind enough to explain how to do this or link me somewhere that does, that would be awesome

go to your wi-fi settings and click the menu button.
it should pop with a "scan" and "advance"
click on advance and scroll down to "use static ip address"
then i guess you have to put in your network details, not sure on the details there cause i have done it but experiencing same problem with my galaxy s
power went out and now can't connect to my network
Edit : Possible fix
I just managed to connect to my network.
I put the device in flight mode and restarted my modem at the same time
put it out flight mode and pluged in the modem again and now works.
Hopefully that works for you to guys.

Yea, works perfectly. I have my laptop connected to it right now. I usually have to reset the phone to get wifi again.
edit: I set it to static ip, but then i got the same problem. Except now google search engine works No webpage opens, youtube app didnt work either.. only the search engine worked.

Well my phone must be in a good mood today because it just decided to start working again all on its own! I don't know what caused it...I have actually had both my phone and computer constantly on since this started happening. So for now I'm keeping my fingers crossed and hoping it doesn't mess up again.

This is probably just for me, but this isn't a viable solution.
The ONLY router I seem to have this issue with is the one that Verizon gives all it's FiOs customers. It's the Actiontec M1424WR Router/Modem. I know my WEP key is correct because it works just fine on all the laptops and other phones (a Palm Pre and another Captivate on 2.1). It tries to obtain an IP address for about 5 minutes and then just sits and says disabled. Does anyone know if there's a way to dump the DNS cache or whatever like you can on Windows?

Add me to the list of ones having this problem...guess I'll try to reflash everything in a bit to see if that fixes the problem.

Just an update I backed up everything using Tibu and then just restored it and my WiFi problem went away.

Mine is stock and just started having this problem....will connect to other wireless routers except mine, really pissing me off!
I've tried many times having the the phone "forget" me, then put in my password(which is correct)...same thing over and over.

Same problem here
I have a galaxy s and the recent update to froyo brought me the same problem already described here.
And the "funny" thing is that my router doesn't have an Static IP option, it's a simpler router from the cable provider.
So i'm trying also to find a solution to this. Two days ago i changed the wifi channel and it worked. But today i have again the same problem and changing the channel don't work anymore.
Each time i find a possible solution, it only works one time.
This is really annoying me. This must be a froyo bug, 2.1 never gave me this problem

pedroc2009 said:
I have a galaxy s and the recent update to froyo brought me the same problem already described here.
And the "funny" thing is that my router doesn't have an Static IP option, it's a simpler router from the cable provider.
So i'm trying also to find a solution to this. Two days ago i changed the wifi channel and it worked. But today i have again the same problem and changing the channel don't work anymore.
Each time i find a possible solution, it only works one time.
This is really annoying me. This must be a froyo bug, 2.1 never gave me this problem
Click to expand...
Click to collapse
It must be a froyo beta bug. Remember we don't have a final version of this firmware for the Galaxy S family.
Sent from my Captivate

[Q] Wi-fi problems SGS

I just bought my Samsung galaxy S i9000 and the only problem i have is with the WI-fi,it works fine until i reset the router(just power on and off), then it starts doing obtaining "IP adress from..." and it wont connect ever again .The only option in this case is to reset the phone to factory setting and this is frustrating.
I noticed that if i turn off the wi-fi on the phone first and after that reset the router and then turn on again the wi-fi on the phone works.The problem is sometimes i forget turning it off from the phone or if a power cut happens it will do the same thing until reseted to the factory settings again and of course i lose all the applications.
Any suggestions are welcome.
Thanks in advance.

Try to change the wi-fi name to something smaller.Also if you use password for the wi-fi try to deactivate it to see if it is the same problem.I feel that it has something to do with the decreption used in the router...maybe i m wrong..

I will try the password removal to see if the problem persists.

Nop, it doesn't work either way, i called a neighbor to come by with his nokia N8 and it seems to work fine for him.

By the way my IP changes every time if i power on and off the router i think the problem might come from there since it says "obtaining Ip adress from...", but then again for nokia N8 works just fine, and i even renamed and reseted the router to different settings and still doesn't work so my guess is that the phone has a problem.

Your router changes IP every time you restart it? Can you explain a little...are you being re-issued a dynamic IP from your ISP thats refreshes when you reset your router? Otherwise I would think even after resetting your router it would default to 192.168.1.0 or .0.0.
Either way it sounds like a DHCP problem...where the router is not properly issuing an IP address to the phone, or your phone has cached old settings and isn't being able to pick up an IP after your router changes IP.

Yea Kops the Ip is dynamic and refreshes every time i reset the router
Kops said:
Either way it sounds like a DHCP problem...where the router is not properly issuing an IP address to the phone, or your phone has cached old settings and isn't being able to pick up an IP after your router changes IP.
Click to expand...
Click to collapse
This is probably the case, any way i can clear the cache?

I've had similar-ish problems when running a custom rom so last resort would be re flashing
Sent from my GT-I9000 using XDA App

Cipzter said:
Yea Kops the Ip is dynamic and refreshes every time i reset the router
This is probably the case, any way i can clear the cache?
Click to expand...
Click to collapse
I would look into seeing if your router is capable of NAT (as most routers are). This would enable a private network in the 192.168.x.x range, and might solve the issue of it not picking up the new IP if the issue is with caching the old one. As far as clearing any cache related to wifi, I'm not exactly sure where that would be found. You could try going into your Settings > Wireless & Network > Wifi settings and forgetting the network. Doing this and letting it re-discover it may help.
May I ask why you are resetting your router? I see no need for it to happen very often. Also, just let me clarify....if you successfully join the wifi, and leave the wifi range...when you return, will it connect again? Does the non-connection only happen after resetting the router?

Have you tried to use static IP for your phone instead?

raditz said:
Have you tried to use static IP for your phone instead?
Click to expand...
Click to collapse
This might be worth a shot if you could get NAT working, to eliminate the "obtaining IP address" from the DHCP... but if the IP is constantly refreshing and changing, I'm not sure it would do any good.

[Q] Captivate Wifi Issue

Hi All,
I have a weird problem with my captivate of not connecting to my home network. Let me start by telling that I have searched the solutions and tried doing everything except full factory reset. I have rebooted the phone, done reset on my router (Wifi was working just fine earlier.. so I think settings was not an issue. But I still did it), I removed the file data/wifi/bcm_supp.conf and let it regenerate it. Captivate displays "Obtaining IP Address" and it just stays there. I also see that IP address is being assigned to captivate in my router
Captivate is rooted stock Froyo
Router security: WEP
form the Wifi list, I found one unsecured network and captivate connects to that router just fine (signals are very week though...). I tried removing the security on my router but it still stuck on "Obtaining IP address".
Can you please please help me?? As I mentioned earlier, It was working just fine and suddenly stopped working two days back.
These all app updates are eating away my limited data of 200M.
Thanks a millian.

What's your router model ?
What channel are you running on ?
Are others routers close to you running on the same channel ?
Have you tried another channel ?
Did you try WPA2 ?

Could be incompatibility with your router. That happened to me before with my old router. It didn't work with some cell phone wifi devices.
Sent using XDA App

Try using the app "FXR." I had the same issue a couple times and this app seemed to fix it. It took a few tries though. I think it might be a router problem. I use the Linksys wrt54g.

You could also try assigning a static IP address to your device on the router side, and then telling your phone to use that address. I've used that in the past to some success.
As a test, have you tried (temporarily) disabling the security on your router to see if it connects?

I have a similar problem since upgrading to the past 3 nightlies. My phone sees and connects to my home network and says it has strong signal, but when I try to access Market or Internet it says there's a network error and I can't get thru. My two computers (one hard wired and one wi-fi) don't seem to have any problem hooking in to the internet, just my SGS1

Moozh1 said:
Try using the app "FXR." I had the same issue a couple times and this app seemed to fix it. It took a few tries though. I think it might be a router problem. I use the Linksys wrt54g.
Click to expand...
Click to collapse
Does the 'FXR' app set up IP addresses?

The App didn't work for me. I tried that yesterday. I was reading the similar problems on some other site yesterday and I found the following that solved my issue. In case someone like me still struggling with the WiFi problem.
Delete file data/wifi/bcm_supp.conf
Delete file /data/misc/dhcp/dhcp_list
reboot the device and it will create these files again and you will have to enter your WiFi password again in order to connect.
I am really glad that my WiFi is working back again.

FYI, I'd change the WEP to WPA.

cappysw10 said:
FYI, I'd change the WEP to WPA.
Click to expand...
Click to collapse
Where do you go to change that setting? I've been all thru the wi-fi settings and advanced settings, but didn't see anything that referred to WEP or WPA.
Just realized we're talking now about the router, not the phone, duh!

Yes, I certainly need to bump up the security settings on my router.
cappysw10 said:
FYI, I'd change the WEP to WPA.
Click to expand...
Click to collapse

22andy2 said:
The App didn't work for me. I tried that yesterday. I was reading the similar problems on some other site yesterday and I found the following that solved my issue. In case someone like me still struggling with the WiFi problem.
Delete file data/wifi/bcm_supp.conf
Delete file /data/misc/dhcp/dhcp_list
reboot the device and it will create these files again and you will have to enter your WiFi password again in order to connect.
I am really glad that my WiFi is working back again.
Click to expand...
Click to collapse
I used root explorer, but could not locate the files you mentioned. Directories were there just not files. I'm still exploring the router side. Thanks for the info tho.

Wifi - Obtaining IP address

I have been having this strange wifi problem lately.. I am not able to connect to my home wifi network.
It says obtaining IP address but never connects.. This problem only occurred recently.. I was able use my home wifi before.
After googling around, i tried the following.
1. I went to advanced setting and used static IP. This time it got connected. But i was not able to connect to internet.
2. Did a factory reset.. Then flashed stock using ODIN. Still no luck.
3. I changed the encryption to WPA-PSK... Didnt work.
Can somebody help with this issue please?

ashok_jigsaw said:
I have been having this strange wifi problem lately.. I am not able to connect to my home wifi network.
It says obtaining IP address but never connects.. This problem only occurred recently.. I was able use my home wifi before.
After googling around, i tried the following.
1. I went to advanced setting and used static IP. This time it got connected. But i was not able to connect to internet.
2. Did a factory reset.. Then flashed stock using ODIN. Still no luck.
3. I changed the encryption to WPA-PSK... Didnt work.
Can somebody help with this issue please?
Click to expand...
Click to collapse
Hmm..did u flash any kernel?

I had this problem when I tried to update busybox. But since you have re-flashed stock.
Are you sure its a problem on your phone and not with the router? Try connecting to a different router.
Sent from my GALAXY Ace.

Remove the WiFi connection from your phone, click on forget.
On your router,from the configuration page, change the WiFi security to open then try connecting using phone.
If it works then remove connection from phone again (click forget), and configure your router to WPA or any other such algorithm. Then connect again.

My brother has this problem, have you tried other wifi networks? It may be able to connect to other routers. What does it say after "obtaining ip address", does it connect or do you get disconnected?

Xr01d_GT said:
Remove the WiFi connection from your phone, click on forget.
On your router,from the configuration page, change the WiFi security to open then try connecting using phone.
If it works then remove connection from phone again (click forget), and configure your router to WPA or any other such algorithm. Then connect again.
Click to expand...
Click to collapse
Hey thanks a lot.. You fixed something which google couldn't

help
Xr01d_GT said:
Remove the WiFi connection from your phone, click on forget.
On your router,from the configuration page, change the WiFi security to open then try connecting using phone.
If it works then remove connection from phone again (click forget), and configure your router to WPA or any other such algorithm. Then connect again.
Click to expand...
Click to collapse
Hey bro , i tried what you say and there is no result unfortunately