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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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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
Click to expand...
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.
Need a little help. My G-tab is running current VEGAn-TAB rom. I am having problems getting the wifi to actually connect. My icon shows a good signal, and inside the wireless settings I am showing connected to my wireless network. I also went to advance settings and made sure wifi never sleeps. All apps that need internet connection (market, browser, etc.) show no data connection.
Used yesterday with no problems. My laptop is running on same network and working fine.
Any ideas?
have you restarted? Sometimes happens to me too but it's nothing a simple restart can't fix.
Yes. Restarted several times. Didn't work.
Oddly enough I have a Airave from Sprint to boost my cell phone signal, and it may have been the problem. When I unplugged it and returned to my G-Tab later the Wifi was working. Not sure why.
TexasZac said:
Yes. Restarted several times. Didn't work.
Oddly enough I have a Airave from Sprint to boost my cell phone signal, and it may have been the problem. When I unplugged it and returned to my G-Tab later the Wifi was working. Not sure why.
Click to expand...
Click to collapse
Could be competition on the 2.4 GHz frequencies. Some wireless phones and even microwave ovens can trash a wifi connection.
Moved to general
Anyone else having WiFi problems with Vegan? Since installing this mod, I can only connect to a WEP signal and not a WPA-secured network.
I can't connect either. Trying to connect to a wep wifi and it stays on "obtaining ip address from ..." but never completes the connection. Any help?
LittleBirds said:
Anyone else having WiFi problems with Vegan? Since installing this mod, I can only connect to a WEP signal and not a WPA-secured network.
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Click to collapse
No problems with home WEP, office WPA2-PSK and several wide open public ones. I just wish the damn thing would auto-connect to the ones I have been to before.
outofoffice said:
I can't connect either. Trying to connect to a wep wifi and it stays on "obtaining ip address from ..." but never completes the connection. Any help?
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Click to collapse
My only guess is, if its a 5Ghz N Router you should check to see if it allows
2.4Ghz signals and not just 5Ghz. The GTAB doesn't seem to support connections at 5Ghz.
I just changed over from TNT Lite(latest version) and was able to connect fine but I didn't like the interface and some of the features. I've loaded Vegan tab 7.0.0 and I was able to connect at work (802.1 EAP) network but I can't connect to a wep wifi at home (were several other pc's are connected and working fine) and it stays on "obtaining ip address from ..." but never completes the connection. Any help?
I have a Linksys wrt300n router and have confirmed that it configured to accept 2.4Ghz & 5Ghz signal and have rebooted several times with no luck.
I don't have a lot to add to help you troubleshoot, but I can say that I am running VEGAn Gingerbread RC1 with pershoot's latest kernel. I am able to connect at home on a WAP2-PSK (Linksys Linux based G/N) at home, WAP2-PSK at the cabin (Linksys's cheapest G/N), and at work on a 802.1 EAP network (Cisco).
I has some unexplained issue mounting the internal storage on a computer. After a little head scratching, I started to wonder if it had something to do with the custom kernel I was running. I flashed Pershoot's latest kernel and my problems went away.
I mention all that to suggest that you might try flashing a different kernel and see if you get different results.
I have an issue with vegan where when i reboot the device (or turn off and turn on) wifi is off even if left on when turning off, i have to manually turn on wifi after every boot.
Sent from my DROIDX using XDA Premium App
fajordan said:
I just changed over from TNT Lite(latest version) and was able to connect fine but I didn't like the interface and some of the features. I've loaded Vegan tab 7.0.0 and I was able to connect at work (802.1 EAP) network but I can't connect to a wep wifi at home (were several other pc's are connected and working fine) and it stays on "obtaining ip address from ..." but never completes the connection. Any help?
I have a Linksys wrt300n router and have confirmed that it configured to accept 2.4Ghz & 5Ghz signal and have rebooted several times with no luck.
Click to expand...
Click to collapse
Have you checked to see if you're using MAC address filtering, and if so, that your gTab's MAC address has been added to the whitelist on the router? I get the feeling that that may be the issue. You have the WEP key on your device, but your router's still blocking it. I'm running the same ROM you are, and have had absolutely no troubles connecting to my work network with 802.1 PEAP, WPA/WPA2-TKIP and AES at home, and multiple makes/models of access points/routers.
Hmmm. Just reread your original. Now I'm wondering if you have enough DHCP leases available on your router. If you're out, you'll have to wait until a lease expires or add some more to your scope of addresses.
Hope some of that helped in some way...
hello
i use wifi through connectify virtual wifi from my pc
whenever my phone is idle or i dint use wifi for an hour or so the network becomes disabled ( i can use wifi on other devices) when i connect it shows connecting but does not connect and wifi becomes not in range even if i am standing next to my wifi router
and now its not even connecting to the wifi even if i reset my wifi ... i also have restarted my phone not working helllpppp !!!
and the wifi sleep policy is set to never
my device - nexus s i9020t
android 2.3.6 gingerbread
pls some1 help !!
Have you restarted your router?
I know you said everything else is working, but give it a try anyway.
I have the same problem...Please help
yes i restarted my router n every thing !! but i cant get it to work
I had a similar problem once, but luckily it was during a session of me messing with my router settings. I live in an apt building, TONS of other routers here, so the frequencies are all crowded.
Do this...
Get this app for your phone:
https://market.android.com/details?id=com.farproc.wifi.analyzer
Find the best channel available for your wireless network (you don't need to be connected to the internet or your router for this). In your router settings set your wifi to that channel (should be the least congested, the app will tell you which channel number). Hopefully that will help.
Also, if possible, set your wifi to only use 20MHz instead of 40MHz if it's in the 2.4GHz range, otherwise you're just causing the same problems for your neighbors. Be a good wireless neighbor!
Oh yeah, and update your router's firmware too, older firmwares are sometimes not fully compliant to wifi standards, it might help your connection issues! Also, use WPA2-AES encryption. WPA2 because it's the most secure right now (for personal uses anyway) and AES because most devices can do AES in hardware, so it's faster and uses less battery (plus I believe the higher end 802.11n speeds recommend that encryption for top speeds).
I own a Wi-Fi repeater to which other smartphones and my wife's MacBook can connect to and have internet access. But on my Pixel 2, while I can connect to repeater wifi network I get the warning "connected, no internet access".
Does anyone know how I can fix this? Thanks In advance.
Cheers
Badelhas said:
I own a Wi-Fi repeater to which other smartphones and my wife's MacBook can connect to and have internet access. But on my Pixel 2, while I can connect to repeater wifi network I get the warning "connected, no internet access".
Does anyone know how I can fix this? Thanks In advance.
Cheers
Click to expand...
Click to collapse
Try this... Turn wifi off and/or unplug everything that has wifi access. Everything. Unplug the repeater and then the main router. Wait thirty seconds and power the router back up. Once it's fully connected, power the repeater on wait for it to connect. Then, turn on your wifi devices. You should be good to go.
Sometimes, DHCP creates conflicts, so this just assigns a new IP address to each device. I have an NAS that I travel with, and every time I connected back to home network, it would cause problems and I would have to do this. Eventually, I just assigned it a static IP address. No more issues.
DuckRuckus said:
Try this... Turn wifi off and/or unplug everything that has wifi access. Everything. Unplug the repeater and then the main router. Wait thirty seconds and power the router back up. Once it's fully connected, power the repeater on wait for it to connect. Then, turn on your wifi devices. You should be good to go.
Sometimes, DHCP creates conflicts, so this just assigns a new IP address to each device. I have an NAS that I travel with, and every time I connected back to home network, it would cause problems and I would have to do this. Eventually, I just assigned it a static IP address. No more issues.
Click to expand...
Click to collapse
Thanks for your answer. I just tried that and it didn't work. I still get the "connected, no internet" warning
Any new ideas, please? Cheers
I have a similar issue with the router of a close relative I visit often. I always have the "connected with no internet" on their router. But if the router is rebooted my pixel 2 will connect fine (initially), then after about 15-30 mins later it's back to saying the WiFi has no internet.
It's rare but bugs with connections and compatibility somewhere can happen between devices. I'm guessing it's some bug in the software causing this. But because the pixel 2 doesn't exactly have a huge market share the users affected are likely not enough for either Google or the manufacturer of the routers experiencing this issue to ever release a fix for this.
My understanding is that Android P fixes a some WiFi issues. Hearing that it's a good daily driver these days, you could load the latest beta.
Is it a "release candidate" at this point?
Sent from my Pixel 2 using Tapatalk
At first a reboot of the phone worked, but later I found that if I rebooted the router the codes would come through but not the previous sent codes, only newly made 2FA code requests. I have a Netgear 6300R2 Router with a second router, Netgear R6300V1, as an extended wifi only router wired together with Ethernet. I have multiple phones that have no problems with 2FA codes, only the new phone Ulefone Note 11P, which is the only phone running Android 11. This phone also has the problem of the new standard for Mac Address assignment as automatic. Since I made the home network use Mac address as the requirement for access to WIFI and assigns a static IP address to each device and has 20 addresses in the router setup. The only way I could get this phone to work on this network was to have one IP slot in the 20 not defined in the DHCP IP address list. So, for the life of me I can not find or do not know how to ask the internet for any info on this type of problem since many phones are running Android 10. Most people probably have newer equipment than I do so the problem is not showing up yet, but I imagine it will when all the Internet security is using Mac addresses to secure the network from unknown devices, an issue that has come up many times. So, if you could point me to some better router software I could load on the routers to handle the Mac addressing problems and have the right protocols built in for 2FA (2-factor authentication) I would try that. It must be a combined problem with Android 11 Wifi settings and router setting for it to work this way. After rebooting the router and receive code all day, the next morning the codes fail to show again, and I reboot the router again. Also, I am in the habit of using Airplane Mode or turning off data and WIFI overnight to prevent access from all those data hungry PUPs connected to the phone over the internet. Thank You for your help. The routers are updated with the latest Netgear software.
bmaz121 said:
At first a reboot of the phone worked, but later I found that if I rebooted the router the codes would come through but not the previous sent codes, only newly made 2FA code requests. I have a Netgear 6300R2 Router with a second router, Netgear R6300V1, as an extended wifi only router wired together with Ethernet. I have multiple phones that have no problems with 2FA codes, only the new phone Ulefone Note 11P, which is the only phone running Android 11. This phone also has the problem of the new standard for Mac Address assignment as automatic. Since I made the home network use Mac address as the requirement for access to WIFI and assigns a static IP address to each device and has 20 addresses in the router setup. The only way I could get this phone to work on this network was to have one IP slot in the 20 not defined in the DHCP IP address list. So, for the life of me I can not find or do not know how to ask the internet for any info on this type of problem since many phones are running Android 10. Most people probably have newer equipment than I do so the problem is not showing up yet, but I imagine it will when all the Internet security is using Mac addresses to secure the network from unknown devices, an issue that has come up many times. So, if you could point me to some better router software I could load on the routers to handle the Mac addressing problems and have the right protocols built in for 2FA (2-factor authentication) I would try that. It must be a combined problem with Android 11 Wifi settings and router setting for it to work this way. After rebooting the router and receive code all day, the next morning the codes fail to show again, and I reboot the router again. Also, I am in the habit of using Airplane Mode or turning off data and WIFI overnight to prevent access from all those data hungry PUPs connected to the phone over the internet. Thank You for your help. The routers are updated with the latest Netgear software.
Click to expand...
Click to collapse
For the DHCP/IP problem I know very little to help your issue. Other alternatives you can try is alternative Software for your router instead of the one from Netgear. I have found just from a quick search Openwrt and DD-wrt, both of which are linux based and have their own limitations.
As for the Openwrt build/s, WIFI only works in 802.11g, but 802.1an/ac work only with limited functionality or not at all. That may not seem so important considering you would only use it for the WAN/LAN ports.
As for DD-wrt, your best bet is to skim through their forum posts to figure out what works and what doesn't. (DD-wrt contains non-FOSS drivers from Broadcom, which they don't release to public, so better compatibility in general)
You can always use another wifi extender in your combo (or stick with it, if that's not the issue).
Best of luck in solving your problems.
Slim K said:
For the DHCP/IP problem I know very little to help your issue. Other alternatives you can try is alternative Software for your router instead of the one from Netgear. I have found just from a quick search Openwrt and DD-wrt, both of which are linux based and have their own limitations.
As for the Openwrt build/s, WIFI only works in 802.11g, but 802.1an/ac work only with limited functionality or not at all. That may not seem so important considering you would only use it for the WAN/LAN ports.
As for DD-wrt, your best bet is to skim through their forum posts to figure out what works and what doesn't. (DD-wrt contains non-FOSS drivers from Broadcom, which they don't release to public, so better compatibility in general)
You can always use another wifi extender in your combo (or stick with it, if that's not the issue).
Best of luck in solving your problems.
Click to expand...
Click to collapse
Thanks for that, great idea! What I find though, with Extenders, is that they require you to have your base station WIFI on 24/7 where my set-up the base, which is right next to me, is off and the 2nd router is WIFI on. This keeps me from being 2.4 or 5.0 waves passing through my body.
bmaz121 said:
At first a reboot of the phone worked, but later I found that if I rebooted the router the codes would come through but not the previous sent codes, only newly made 2FA code requests. I have a Netgear 6300R2 Router with a second router, Netgear R6300V1, as an extended wifi only router wired together with Ethernet. I have multiple phones that have no problems with 2FA codes, only the new phone Ulefone Note 11P, which is the only phone running Android 11. This phone also has the problem of the new standard for Mac Address assignment as automatic. Since I made the home network use Mac address as the requirement for access to WIFI and assigns a static IP address to each device and has 20 addresses in the router setup. The only way I could get this phone to work on this network was to have one IP slot in the 20 not defined in the DHCP IP address list. So, for the life of me I can not find or do not know how to ask the internet for any info on this type of problem since many phones are running Android 10. Most people probably have newer equipment than I do so the problem is not showing up yet, but I imagine it will when all the Internet security is using Mac addresses to secure the network from unknown devices, an issue that has come up many times. So, if you could point me to some better router software I could load on the routers to handle the Mac addressing problems and have the right protocols built in for 2FA (2-factor authentication) I would try that. It must be a combined problem with Android 11 Wifi settings and router setting for it to work this way. After rebooting the router and receive code all day, the next morning the codes fail to show again, and I reboot the router again. Also, I am in the habit of using Airplane Mode or turning off data and WIFI overnight to prevent access from all those data hungry PUPs connected to the phone over the internet. Thank You for your help. The routers are updated with the latest Netgear software.
Click to expand...
Click to collapse
Update: 9-26-21 3:31PM PST I did some reading on different Qos settings and can see a potential problem, so I unchecked Qos completely. All the 2FA codes are coming through now. I have to wait another day before being sure, but I think that may have been the problem. It also had a problem logging on to WIFI which had that too. So, my question now is, What does Qos have to do with 2FA codes coming through. The codes are no normal MMS messages so is it the software in the router being old and not knowing about 2FA protocols with Qos or what?
Also, I had a heck of a time logging in to the site, and after I did, I had to reload the site in order to see my post which took too long to find. Where is the "See your Post Button"?