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Hey world,
I'm having trouble with my Roger's branded Samsung Captivate SGH i-896's wifi. The phone is completely stock. When I connect to my wireless AP at home it doesn't seem to always work on the captivate... I had a htc magic before running all sorts of different roms and never had a problem like this before.
What happens is that I would connect to wifi at home and it would work, but if I leave wifi on the phone for an extended period of time and go back to the phone, wifi stops working.
It would show that i've successfully connected to my AP but no data would pass through my phone.
Disconnecting and reconnecting to the AP doesn't seem to work, the only way to fix it is to restart the phone. I'm not experiencing this problem with any of my laptops, netbooks or cellphones at home.
Security type is WPA2.
Is anyone else experiencing this problem? Anyone have an idea what could be causing this problem?
I have had this problem intermittently, So has my wife on her Captivate. No idea what causes it though. It's a pain because if WiFi is on, but not working, 3G doesn't kick in so apps just don't work.
my wife's captivate has this issue as well (but I don't on my captivate). It will work for a short period and then stop. We have a fios wifi router, not sure if that matters at all.
restarting the router and/or phone usually fixes the problem
mine is a linksys... hrnnn
I'm having the same problem on my new Captivate. Tried it on several different networks with the same results (shows connected but no data will transmit) before I took it back to ATT. They scratched their collective heads and rebooted (powered down and removed battery), which is a temporary fix, but its been working for two days now and I turn off WiFi unless I know I'm in range of a working hot spot.
I was having this same problem until I set my wifi policy to never sleep, dont know if it is a fix for everyone but it definitely fixed my problem.
Sent from my SAMSUNG-SGH-I897 using XDA App
Glad to hear I'm not alone!
I've been fighting with this issue for over a week now, it suddenly started occurring. I wonder if it was an app we all loaded that suddenly made this condition occur? If you look the phone is requesting an IP and if the IP given back by the router is the same one it already has the phone doesn't acknowledge that command. If the router is rebooted then a new IP is given, or what is considers new. This is a HUGE problem and I've put in some time looking at it, but one of the problems is that is comes and goes. What your router log and you'll the phone request an IP over and over again, all the while the router saying "here, take the same one you already have back".
If you use the app "Network Info II" you'll see the problem when it displays a "Device IP" at the top of 192.168.1.254 and WiFi IP address will be the correct one, in my case 192.168.1.108. When we have these two IP numbers showing differently the device is hosed. Rebooting will put them back in sync, but that is not the proper solution, we need to get to the bottom of this! I understand the WiFi IP address showing at the bottom but the "Device IP" I do not, why the difference? How can we affect the "Device IP", where does the device get that IP address?
Try the app called WiFi Fixer. That did the trick for me. There seems to be a bug of some sort that causes the phone to not release the IP address. Or you could use static IP but that worked only for a while.
Cheers.
Sent from my SAMSUNG-SGH-I897 using XDA App
the app doesn't seem to work for me.... =(
DKirk said:
How can we affect the "Device IP", where does the device get that IP address?
Click to expand...
Click to collapse
The phone gets the device IP from either the service provider (when using edge/3g), or from the router (when using wifi). If an IP address is not provided, it uses a default IP address, which is always outside of the standard private IP block.
There are two ways to assign an IP address: dynamically and via static IP address. Dynamic = assigned by the router, static = pre-programmed by you. I don't know if you can set a static IP address on a phone, as I've never tried it.
I had a zyxel wireless n router in my house and could never get the wifi to work on my captivate. If it did work it lasted 5 seconds... I was really pissed.
I was thrilled to see that buffalo is now back in the market and with dd-wrt firmwares... So I picked up the most expensive one they had for $89.99.
it has a dlna client built in as well as bit torrent, also lets you use a spare usb hard drive as a nas... things i don't know....
However loaded up the wireless settings in 2 minutes and voila... perfectly working on my captivate... I have also found that this router works flawlessly with G+N devices and it is gigabit. I was able to stream 1080p video from my synology 411+ to my ps3, download on the captivate and be on two other laptops at the same time without any issues... I am very very impressed with the buffalo.
Here is the product info.
buffalo nfiniti wireless n high power router and access point. WZR-HP-G300NH
ohh and my laptops are connected fully at 300 mbps with this router wirelessly...
very very happy with it.... Oh and forgot to mention... once this started working with the buffalo i noticed my batter was much better running on wifi all the time. Also wifi file explorer pro works flawlessly.. I was able to upload a 700 meg movie to my captivate wirelessly in about 2 minutes.
WiFi fixer did not fix my problem as well. After turning WiFi on the device IP remains 192.168.1.254 while the WiFi IP is correctly set at 192.168.1.108. When these two IPs are different WiFi does not work and WiFi Fixer doesn't appear to see any problems here.
The router here is an Asus RT-N16 running Tomato and I'm fairly confident that isn't the problem. This is more like an internal routing issue inside the phone.
I don't think it's brand of router that matters... maybe a setting on our routers can fix this...?
I've searched the internet to find a sol'n but it looks like this wifi problem is a widespread problem for almost all galaxy S devices... ppl have made temporary workarounds (ie. setting a static ip) but ultimately, there is no fix for this problem.... gg...
bigbrotherbear said:
I've searched the internet to find a sol'n but it looks like this wifi problem is a widespread problem for almost all galaxy S devices
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Click to collapse
It appears to go beyond Samsung Galaxy, I've seen the same issue with Nexus and Motorola Droids. VERY frustrating!
tylerdurdin said:
I was having this same problem until I set my wifi policy to never sleep, dont know if it is a fix for everyone but it definitely fixed my problem.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Click to collapse
I dont know why nobody even notice that answer !!!!
had same problem on my milestone .. it is not a bug , wifi goes to sleep , its the way your phone is set up ... as its quoted here set it to never sleep and make sure your not using soem kind of app that will overwrite that setting ( like battery manager that for example could turn off wifi to save battery)
very easy to double check once your wifi is not working , go in wifi settings scan and check the wifi access points you normally use you ll see its set to disabled ..
the bug is it doesnt resume like it should. or gets re-enabled however you wanna call it . just re-enable it voila ! no reboot needed .
I got it working!!
This may be my first post here, so be kind...
Running Cognition v2.3b3 and Linksys WRT54G router. WIFI was working fine until I flashed to Cog 2.2 Then I could only use WIFI tethering, no other WIFI connection would work.
I tried setting up static IP and setting sleep to never. Didn't work. Changed router security from WEP to WPA Personal and got it working.
Phone settings: Go to Wi-Fi Settings, click menu, and goto advanced. I don't know if all the settings here are necessary, but I'll post what I have.
Port = 80
Use statis IP = checked
IP address = 192.168.1.103 (check your router assignments for an open address)
Gateway = 192.168.1.1
Netmask = 255.255.255.0
DNS 1 = (check your router config. For my router it's located under the Status, then router tabs.)
Router settings: (Under the Wireless, Wireless Security tab)
Security Mode = WPA Personal
WPA Algorithms = TKIP
WPA Shared Key = (your access key used when you attempt to athenticate from your phone)
Group Key Renewal = 3600 seconds
Write the access key down so you can use it to reconfigure the other wireless devices on your home network.
Good luck,
Glen
changing my router fixed the issue.
I have wifi running on my captivate for 8 hours at a time at work now and at home. Not one hiccup or disconnect, works 100%.
99% of wireless routers are crap. I work in IT and have dealt with most major brands and had been running linksys wireless routers with dd-wrt on them...
if you got a spare 90 bucks.. go to your microcenter or place where they sell buffalo routers and pick one up. If it doesn't work.. you can return it.
This worked for me
Going to a static IP worked for a few hours and then it stopped working as before. WiFi is set to not sleep.
When I ran the router without security I did not have this problem and since adding WPA2 w/AES+TKIP the problem has developed. The iPod Touch doesn't have a problem with it, nor my laptop or wireless ipTV set-top box, only the Android. I'm leaning towards setting up another router without security, on a different channel, and see if the problem disappears again. Here in 2010 we shouldn't be having this issue, but look on other forums and you'll find similar complaints with other brands of Android phones, it's not a Samsung thing.
I'm having an issue where my wifi can't obtain an IP address from my router. I've reset both the phone and the router and it still can't connect. The password is correct. Any ideas? THanks
Edit: It goes into a loop where it tries to get an address for a while and then disconnects and then starts over
Same here. I'm rooted and get the same thing on different find including stock.
Try turning your encryption off and see if you can connect. If it connects then start working up through the encryption levels. Some devices can't handle higher level encryptions.
Sent from my KaosFroyo V39 Eris using XDA
I'm trying to connect to open networks. So that's not the problem. hope we don't have another case of the captivate on our hands. I'm kind of in the middle right now with this phone. Possibly returning it and keeping my captivate with all its Rom flashing goodness. I know its early but this thing seems a little buggy to me and the battery isn't helping any.
I'm also having this problem. It tries to connect to the network, fails, and tries to connect again. I love this phone but I may return it and get the Attrix
Sent from my Desire HD using XDA App
Just connected, and fast!
Turning off the wifi encryption worked for me. Not ideal but ok for now.
Hate to sound noobish but......how do I turn off the encryption?
Sent from my Desire HD using XDA App
thinkhope said:
Hate to sound noobish but......how do I turn off the encryption?
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
Log into your router and set wireless security to unsecured, then save changes
If get on wifi networks in different locations but have same SSID, it could cause connectivity issues (e.g., wifi SSID at my gym is "linksys", same as one of my neighbor's. My Inspire attempts to connect continuously without success to my neighbor's encrypted wifi after I've been at the gym which is an open wifi.)
Sent from my Desire HD using XDA App
davwman said:
Just connected, and fast!
Click to expand...
Click to collapse
Could you please fill me in on what you did to accomplish this. I am having the same exact issue it goes into a loop of trying to "obtain ip address" then disconnecting.
I have a stock inspire 4g, sig is outdated. Router was using wpa/wpa2 however i have switched through all the other available security settings (wep, no security) and the same issue persists.
Ok so now i went to the advanced settings and checked the DLNA auto-IP box, this allowed the phone to connect to the network however it still will not pull up any websites through the browser.
Been having the same problem here i can connect to my network but it times out trying to obtain an IP address disconnects and tries again. Any suggestions would be great because i can't seem to find an answer anywhere. My inspire is stock by the way never been rooted or anything
Is your router on IPv6? Needs to be on IPv4.
For those having problems with WiFi...
Change security to WEP
Put wireless router on channel 11
Try these settings first!
Sent from my Desire HD using XDA Premium App
Still can't get it to obtain an IP address, however I got it to work by setting up a static IP address on the inspire. I would really like to get to the bottom of this problem though.
You might be having an IP conflict.. does your router allow you to assign IP per a connected device MAC address?
It basically holds a certain IP for a certain MAC address
Sent from my Desire HD using XDA Premium App
Hmmm not sure I'll have to look into that. Havent tried to connect to any other networks yet guess that could help a bit
Have u updated the firmware on your network gear? What is your setup by the way?
Sent from my Desire HD using XDA Premium App
Ok, tried to use a laptop today on my network and it had the same issue so I reset the whole system (i have at&t uverse) and that fixed it. Don't know why I didnt do that from that start but after I did my inspire connected first time with no problems.
I had a problem with my wireless router and my Verizon router using the same DNS gateways. I checked to see what my DLink routers DNS server/default gateway was using the commands in the run when you hit cmd+r on my PC. I then had to manually assign my phone to a static IP in wifi settings>advanced.
Example;
IP.(phone) 192.168.1.197
Gateway: 192.168.1.1
Subnet: 255.255.255.0
DNS: 192.168.1.1
For some reason my phone was automatically reading 192.168.0.1 on the DNS and gateway.
Sent from my Inspire 4G using XDA Premium App
First of all may I say I have searched for this problem on google, as well as xda forum. I did find several threads about this problem, but none of the solutions presented appear to be my case.
So, basically the problem is: I cannot connect to my home router, a Linksys WRT300N N-router. I could not connect with a N1, HTC Desire, nor with my actual NS. My previous Galaxy S was connecting fine though. I'm talking here about stock ROM, no rooting, no custom kernel etc. Also, using static IP address works like a charm, but then WiFi cannot be used on other outside routers, since Static Ip setting is not setup PER router, but rather per WiFi connection, meaning the phone will try to use the static IP defined for any WiFi I run into.
From My experience, it seems it could be related to wireless N router as opposed to b/g. This happened since I replaced my router with the actual one. Ever since this happened, my phone would not connect to my router. Also, this problem seems to be presentfor any N-router, since I cannot connect to WiFi in other locations as well (which might have N-routers as well).
Assuming that it is a problem with N-routers, I don't understand why the Galaxy S would connect, but NS not, since they are almost the same hw.
Does anyone have a clue on this? But please skip solutions like reset router, reset phone, reset modem, use different ROM etc. I am talking stock ROM for all the examples above.
Thanks.
I use my NS with three 802.11N routers without issue (D-Link, Belkin and Netgear).
Have you checked if MAC filtering on the router is active? What security mode are you using? Who makes yr router and does it have latest fw?
Sent from my Nexus S using XDA App
Just seen you use Linksys, I have a wag160n and I find it unsusable on terms of wifi, dreadful hardware, despite the parent company being Cisco
Check Linksys forums for problems.
Try another router for whether it's that or phone at fault.
Sent from my Nexus S using XDA App
MikhailCompo said:
I use my NS with three 802.11N routers without issue (D-Link, Belkin and Netgear).
Have you checked if MAC filtering on the router is active? What security mode are you using? Who makes yr router and does it have latest fw?
Sent from my Nexus S using XDA App
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Click to collapse
MAC filtering is disabled, I've checked it. Security is, on the router, PSK-Personal with TKIP encryption. Key renewal: 7200 sec. Not sure if this can influence anything.
I've checked on linksys page for fw upgrade, they only have pdf manuals.
ionutz6 said:
First of all may I say I have searched for this problem on google, as well as xda forum. I did find several threads about this problem, but none of the solutions presented appear to be my case.
So, basically the problem is: I cannot connect to my home router, a Linksys WRT300N N-router. I could not connect with a N1, HTC Desire, nor with my actual NS. My previous Galaxy S was connecting fine though. I'm talking here about stock ROM, no rooting, no custom kernel etc. Also, using static IP address works like a charm, but then WiFi cannot be used on other outside routers, since Static Ip setting is not setup PER router, but rather per WiFi connection, meaning the phone will try to use the static IP defined for any WiFi I run into.
From My experience, it seems it could be related to wireless N router as opposed to b/g. This happened since I replaced my router with the actual one. Ever since this happened, my phone would not connect to my router. Also, this problem seems to be presentfor any N-router, since I cannot connect to WiFi in other locations as well (which might have N-routers as well).
Assuming that it is a problem with N-routers, I don't understand why the Galaxy S would connect, but NS not, since they are almost the same hw.
Does anyone have a clue on this? But please skip solutions like reset router, reset phone, reset modem, use different ROM etc. I am talking stock ROM for all the examples above.
Thanks.
Click to expand...
Click to collapse
Have you checked that you set up the router with b/g/n protocols? not only N..
Try to change the password encrypting method, to WPA or WPA2 or WEP, try also to change the default password.
Have you tried to disable the firewall (DMZ)?
I have exactly the same issue on my stock Desire.....
I have recently upgraded my router from a Belkin G+ to a Belkin N+ and using the b/g/n setting the desire WILL see the connection but will NOT connect to it, NO MATTER WHAT settings you try. Changing it to b/g and it will connect without any issues.
It is my understanding that the Desire/Nexus et al doesnt have the access to the N ability enabled (it has the correct chipset but for some reason it is not active).
Maybe when broadcasting the tri-band the chipset only sees the stronger N connection, therefore tries to connect but gets conflicted (due to lack of N firmware) and instead of switching to b/g it just loops to the stronger signal. IF that makes any sense
Riki1kenobi said:
I have exactly the same issue on my stock Desire.....
I have recently upgraded my router from a Belkin G+ to a Belkin N+ and using the b/g/n setting the desire WILL see the connection but will NOT connect to it, NO MATTER WHAT settings you try. Changing it to b/g and it will connect without any issues.
It is my understanding that the Desire/Nexus et al doesnt have the access to the N ability enabled (it has the correct chipset but for some reason it is not active).
Maybe when broadcasting the tri-band the chipset only sees the stronger N connection, therefore tries to connect but gets conflicted (due to lack of N firmware) and instead of switching to b/g it just loops to the stronger signal. IF that makes any sense
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Click to collapse
Well, the funny part is that I don't even know how to disable the N range to my Linksys 300N.
Anyway, it is weird that the Samsung Galaxy S had no issues with this, while Nexus S (still Samsung made, brother-in-law to SGS) has this issue. For HTC, all have had this problem, including Desire, Desire HD, Wildfire.
Still no explanation or resolution to this matter.
I may have fixed this issue (well I have for me anyway, so yay).
After posting this I decided to apply some weird logic to it. So I reset the router back to b/g, to do this you need to log into the router IP settings, for Belkin it is 192.168.2.1. On linksys routers I think it is 192.168.1.1 but check to be sure.
Once you are logged in there you can change the broadcast settings from N, b/g/n or b/g etc.
Okay, so here is what I did. I reset the router to broadcast b/g only, my Desire would connect. So I decided to try resetting the router to broadcast b/g/n (because I use N on other devices) and then switched the wifi on the desire off and back on again. Low and behold it connects.......Tried it loads of times now and connects everytime!
Might be worth a try?
You guys should just check the logs on the router and see what they say. Should give you a much better idea of what the issue is. You can then Google the error line.
Mine is fixed now, been connecting to various N routers with NO probs since I did the workaround.
My guess would be a protocol conflict (wireless handshake if you prefer) when N routers are broadcasting (based on the fact that the Desire/Nexus etc dont have N protocol enabled in the chipset firmware).
To get around the conflict connect to an N router using the b/g only setting in the routers IP settings and then check you can connect okay and switch the b/g/n back on in the router. I've done this twice today (different N routers, a Linksys and a D-Link) and it works on both where it wouldnt before, so it wasnt just my router.
hum... i am having the exact same problem as described only my router is already using
802.11g&802.11b
i have no idea why it keeps trying to obtain ip address
then it scans agains because it can't connect and tries to obtain the ip again
after trying for a minute or 2, the home ssid becomes:
"disabled, secured with..."
(device = motorola atrix)
I have tried everything and still not working... do routers block Mac addresses if it doesn't connect right away?
Sent from my MB860 using XDA App
Did you reboot your router? Mine does that sometimes but a reboot always fixes it.
Sent from my Nexus S using XDA App
Hum. Tried restarting the router... no go
Sent from my MB860 using XDA App
Hey guys, I have an LG p500 and I use custom roms. Currently using CM 6.5.7 (2.3.5) and randomly I got this. It says my wireless is disabled. I am unable to include a photo as I am new to the forums. But basically it shows my wireless name and "disabled, secured by blah blah". I've tried forgetting the network, still same problem. Reflashed and wiped cache and dalvik.
I am unable to connect to my wireless, it just says disabled. This randomly happened, and wifi was working fine for 6 months, It worked fine on 6.5.7 but just randomly said that. I can connect all other wireless devices to the router, so whats the problem
1nf3rn0x said:
I've tried forgetting the network, still same problem.
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Click to collapse
'Forget' all the networks until you no longer have 'Not in range' networks. Maybe reboot your phone and try connecting again. It should work.
Nope, didn't do it.
Still says the same thing.
I experienced a similar problem with my home network (with the same rom) and solved by introducing manually the IP adress, gateway, netmask & the DNS. (got them easily by looking at the properties of my wireless network from a laptop and choosing an IP address within the range supported by my router). Now my phone is always connected using this configuration, but it only works optimally with the network for which settings are valid.
Might be a ROM bug. someone alerted to mik about this bug to fix it?
I have the same problem too. My WiFi randomly stopped working and when I turn the WiFi on it says "connecting" and then "disconnected". When I try to scan for more it doesn't do anything. I am also using the Cyanogen Mod as well.
The problem is probably that usb debugging is turned on. Try turning it off.
explain me pls
xsam123 said:
I experienced a similar problem with my home network (with the same rom) and solved by introducing manually the IP adress, gateway, netmask & the DNS. (got them easily by looking at the properties of my wireless network from a laptop and choosing an IP address within the range supported by my router). Now my phone is always connected using this configuration, but it only works optimally with the network for which settings are valid.
Might be a ROM bug. someone alerted to mik about this bug to fix it?
Click to expand...
Click to collapse
(got them easily by looking at the properties of my wireless network from a laptop and choosing an IP address within the range supported by my router) how i should do this can explain me i have win 7
I have the new Galaxy Tab 2 7.0 student edition. It will not connect to my Uverse router. It sees it. I type in the password it shows "obtaining IP address" and then it says "network disabled, poor connection". It shows the signal as "strong" because I'm sitting in front of my router. I currently have my laptop, WDTV, Infinity, ipad, all connected to the same network, no issues ever getting on. The Tab will connect to my Epic's wireless hotspot if I activate that so I'm totally lost. Obviously that is not the connection I'd prefer to use when I'm at home. Anyone have any thoughts or suggestions? I don't know much about routers but I'm "in" mine, just don't know what to look for. TYIA.
The obtaing ip address seems like a problem which need manual configuration via advanced options
Do you use static ip or dns or so?
so long press the name of network after connected and you will find advanced and enter the required fields as ip, gateway, primary and secondary dns and those number ars entered once and saved to be used later
Sent from my GT-P5100 using xda app-developers app
Go to settings, then advanced then tap on avoid poor connections so it is unchecked, try it then. Still doesnt work, do what ^ did.
Btw if your running the latest 4.0.4 the wifi seems messed up, people have said it in the past. If this is the case go to 4.0.3 by flashing through odin (flash counter may go up) or just flash cm9/10.
Sent from my SGH-I997 using xda app-developers app
I had to reboot my router.
Go to adavnced on wifi options and turn off the don't use weak connections.