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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?
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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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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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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 had issues today connecting the Inspire to my home Wi-fi.
Initially I had my Wi-fi setup to not broadcast the SID. When I add the network to the phone it is listed as "Not in Range".
As soon as I change the router to broadcast the SID, the phone connects as expected.
Anyone have any insights? Anyone able to confirm?
--wookiefoot
I also hide my SID on my router and my Inspire connects just fine.
Try rebooting your router? I had an issue the other week where my Captivate wouldn't get an IP address from my router, but I just rebooted the router and it worked fine after that. I figured it was just a glitch.
i just cant connect. says obtaining ip address
iPrevailed YDG said:
i just cant connect. says obtaining ip address
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Did you try rebooting your router?
chocodough said:
Did you try rebooting your router?
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Click to collapse
nah but ill try it
Make sure the IP its trying to connect to isn't in use by another device.
Wifi settings on my end, WPA2-PSK security type
Connected to the 802.11n router fine.
chocodough said:
I also hide my SID on my router and my Inspire connects just fine.
Try rebooting your router? I had an issue the other week where my Captivate wouldn't get an IP address from my router, but I just rebooted the router and it worked fine after that. I figured it was just a glitch.
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I'll give the router reboot a try. Seems odd that I can toggle SID visibility on/off and watch the phone disconnect and connect based on that.
My temp fix was to leave SID visible then lock down MAC filtering. Not very convenient when new devices need to connect though.
Will update with results in a bit.
Sounds more like a DHCP issue rather than a SID issue. Check your DHCP settings. That is where it gets the IP address from. You could also give it a static IP or create a reservation for it so it forces the IP. Good luck.
kimtyson said:
Sounds more like a DHCP issue rather than a SID issue. Check your DHCP settings. That is where it gets the IP address from. You could also give it a static IP or create a reservation for it so it forces the IP. Good luck.
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Setup DHCP Reservation for the phone. Still no luck. As soon as I switch the visibility of the SID, the phone disconnects and lists the network as "Not in Range".
Not doing anything special with security:
Mode: WPA-Personal
WPA Mode: Auto (WPA or WPA2)
Cipher Type: TKIP and AES
FYI - router reboot didn't resolve the issue either. (Model: D-link 655)
Any other thoughts?
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
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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!
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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
Here is the problem: i can connect my sensation to the wifi network and the system shows that the connection is successful. But i can't access to any internet services, such as web pages. One thing is for sure: the wife network is OK and i used to surf online with anther phone by the same wifi network. I would appreciate it if anyone respond to this thread.
this has just happened to me.
pmbldc said:
Here is the problem: i can connect my sensation to the wifi network and the system shows that the connection is successful. But i can't access to any internet services, such as web pages. One thing is for sure: the wife network is OK and i used to surf online with anther phone by the same wifi network. I would appreciate it if anyone respond to this thread.
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Did you add the mac-address of your Sensation to the MAC -table of the router as "allowed'?
mayen said:
Did you add the mac-address of your Sensation to the MAC -table of the router as "allowed'?
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Click to collapse
No，because the routers is beyond my control. I'm sure that wifi is ok and i can access the webpage by another device without doing anything. Certainly i need to input the password.
And thank you for your reply.
pmbldc said:
Here is the problem: i can connect my sensation to the wifi network and the system shows that the connection is successful. But i can't access to any internet services, such as web pages. One thing is for sure: the wife network is OK and i used to surf online with anther phone by the same wifi network. I would appreciate it if anyone respond to this thread.
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Click to collapse
its a router issue....plz disable DHCP on router ... then use NAT and put a seprate static ip for sensation... this happens if u use automatic ip config by ur ISP....nothing wrong with the fone...my frnd had same issue and i configured his router from here via team viewer and now it rocks.... get router configured...
lalitsehgal21 said:
its a router issue....plz disable DHCP on router ... then use NAT and put a seprate static ip for sensation... this happens if u use automatic ip config by ur ISP....nothing wrong with the fone...my frnd had same issue and i configured his router from here via team viewer and now it rocks.... get router configured...
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I'm amazed at your knowledge of wireless technologies but please explain me why is it a router issue if 2 of my laptops, 2 towers and 2 of my phones (along with multiple guests' phones) have no problem accessing content on my wireless network but my Sensation throws a fit every time it's I try to connect?
Thank you in advance.
borodin1 said:
I'm amazed at your knowledge of wireless technologies but please explain me why is it a router issue if 2 of my laptops, 2 towers and 2 of my phones (along with multiple guests' phones) have no problem accessing content on my wireless network but my Sensation throws a fit every time it's I try to connect?
Thank you in advance.
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Click to collapse
well all the routers have config options..... they transmit wireless in a particular ip range depending upon the configuration... ur devices have enrolled themselves on all possible empty slots in ip range and sensation is not able to coz it must b out of the ip range now...possibly u must have used many wireless devices but even after u disable them the temp ip auto assigned stays... so except for new devices old ones will never have problem.... jst disable dhcp in config page of router and enable nat.....if it does nt work add me on gtalk [email protected] and i'll configure ur router via team viewer....
I have a Netgear WNDR4000 router. I am using WPA2 security, static internal IP addresses and a MAC table to control access to my home network. I have added multiple devices to my home network since I bought the router without any issues including an Android smartphone running gingerbread.
No matter what I do I cannot get my 300 to connect to the network. It does see the network SSID but it will not connect. I even tried the WPS button on the front of the router using the advanced settings on the 300 but still no luck.
I am beginning to think that the MAC address listed under the “About Device" menu item is not what the 300’s radio is actually broadcasting.
I have double- and triple-checked all the settings but I am getting nowhere.
Any help or suggestions you may have would be appreciated.
Does your smartphone support tethering? Connect the 300 to it to verify MAC address. You could TEMPORARILY reconfig your router to be open (no security) and confirm MAC address. Turn off MAC filtering to see if that is it. Get it to connect to something wide opeb and then begin layering on the security.
You have set up your static settings on the 300, correct? Sounds like you have DHCP disabled on the router...
Sent from my SCH-I510 using XDA
Thank you for your response.
I did finally decide to take all the security of the router and the 300 connected right away. Then I checked the router's "attached devices" list and it did verify the MAC address that the 300 was displaying. So I was able to clear that as an issue.
I still could not get it to connect with my WPA2 security turned on (my router needs that level of security to put out "N" speeds) on the 2g network.
Right; I have DHCP disabled on the router. All my devices, wired and wireless, get an assigned internal IP address and their MAC addresses are loaded into a table.
Every other device I've added to the router connects without a problem.
I decided to send the 300 back and I'll just wait for the Infinity to hit the market.
Thanks again for your help.
Hope your next one works as it should. Mine connects fine using WPA or WPA2, multiple manufacturers. Still waiting for OTA, rooted running .17 firmware.
Sent from my SCH-I510 using XDA
ptgay49 said:
Thank you for your response.
I did finally decide to take all the security of the router and the 300 connected right away. Then I checked the router's "attached devices" list and it did verify the MAC address that the 300 was displaying. So I was able to clear that as an issue.
I still could not get it to connect with my WPA2 security turned on (my router needs that level of security to put out "N" speeds) on the 2g network.
Right; I have DHCP disabled on the router. All my devices, wired and wireless, get an assigned internal IP address and their MAC addresses are loaded into a table.
Every other device I've added to the router connects without a problem.
I decided to send the 300 back and I'll just wait for the Infinity to hit the market.
Thanks again for your help.
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Click to collapse
Wtf... Send it back.... Wow!
Sent from my SPH-D710 using xda premium