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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
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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.
My eee pad can search and find wifi signals and can connect to my neighbours wifi but it can't find mine at all.
I added it manually but it says out of range.
I really don't know why it can't pick it up.
Any help is appreciated.
tom_middleton said:
My eee pad can search and find wifi signals and can connect to my neighbours wifi but it can't find mine at all.
I added it manually but it says out of range.
Any help is appreciated.
Click to expand...
Click to collapse
Do you have a 5GHz Wifi? I believe the Transformer only supports 2.4 GHz.
BR-6475nD its that. on virgin internet.
It does 2.4 and 5 at the same time.
Strange that it can connect to all the others and doesnt even find this one.
Please help
Some Android devices have problems connecting to certain WiFi devices unless you use static IP. I know I did with my old Linksys WRT54GS and the nook color and EVO 4G. Try setting the connection as a static IP.
Yours set up to use a certain channel or is it on auto?
i had the exact same problem with mine when i got it. I never had a problem with my android phone or laptop conecting to my wifi, just the transformer when i got it. I had to change channel on my router, i found some channels that didn't work a t all and some that inermittantly worked. I ended up using channel 1 of all channels.
Ive just picked mine up about 30 minutes ago, I had the same issue with a Sky router (UK). It was set to channel 12, I changed it to 10 and all is ok
Hi,
I bought my TF while I was on holliday and I was able to connect to the internet using a 3G pen connected to a router.
When I arrived home I tried to connect the TF to my home network and it does not detect it! I already restarted it several times and can't find a way of TF detecting my wifi network. All my other wifi equipments (laptop, PDA, PS3, etc) detect and connect to my network, the TF is the only one that doesn't even detects my newtork (however it detects other wifi networks form my neighbours)!
I tried to connect the TF to the router with the 3G pen and it worked only my home network is not detected!
Any explanation for this??
Without being able to connect to my broadband network the TF is useless to me...
If I was in your situation I'd either return it our root & flash a rom. When I bought my nexus s at launch i faced the same issue but fixed it by rooting & flashing
Sent from my Nexus One
wifi setup
If it can see the networks around you then the WiFi on the tablet is working. It is either all or nothing (learned from personal experience with my transformer after a bad RMA). Since my router is set not to broadcast its SSID i had to manually setup the network info on my transformer to get it to work.
any chance you live in europe and you're router is set to channel 12-14?
Sent from my Transformer TF101 using Tapatalk
finalhit said:
any chance you live in europe and you're router is set to channel 12-14?
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
I do, and I had the same problem. My router was set to auto channel. Changed it to 10 and now it works
finalhit said:
any chance you live in europe and you're router is set to channel 12-14?
Sent from my Transformer TF101 using Tapatalk
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Click to collapse
THX!
any idea why that is?
You'd need to set the tablets "wifi regulatory domain" to UK or another country that allows Channels 12 & 13
Not sure if stock ROMs let you do that, KatKiss does, then you can use all 13 channels
*Detection* said:
You'd need to set the tablets "wifi regulatory domain" to UK or another country that allows Channels 12 & 13
Not sure if stock ROMs let you do that, KatKiss does, then you can use all 13 channels
Click to expand...
Click to collapse
For all who are searching for the right "wifi regulatory domain" in KatKiss - "EMEA and Rest of World" works with Channel 12 & 13.
Okay, a little about my setup. I have tested on Slim ICS 2.7, 2.9; Codename Android 1.4, 1.5.5; as well as AOKP (I dont know exact builds, but am on the latest now - build 28). I have a Cradlepoint MBR 1000 which is a b/g/n 4g router (though I only have cable hooked up - was bought originally to allow me to broadcast my Clear 4g service, but Clear doesnt work where I live now).
EVO 3D, iPhone 4s, All my laptops, HeroC, Kyocera Echo, Roku...I mean everything connects to my Wi-Fi EXCEPT my NS4G...WTH?
Does anyone else have this issue?...could it be some settings with the N router?...I cant believe everything but this phone works.
Please help. It is so frustrating to be limited to 3g that works intermittently while I am at home. I have all my apps from the Google Play backed up to my sdcard so I dont have to connect to install them...it is a huge pain. Thanks in advance
Need some more description. What settings do you have on the router, how have you tried to connect, does it connect then drop out, can you see the network at all, etc?
Either your phones wifi hardware is gone or your house.
So here's what you can do to narrow down on the problem.
Tell me if you can connect to any other wifi hotspots outside your house. If it does connect then problem is router if it doesn't than problem is with the phone.
Good luck.
Sent from my Nexus S using Tapatalk
Does it detect any Wi-Fi networks at all?
Does it detect any Wi-Fi networks at all? or just can't make the connection
I have the same problem but only at home .I don't anderstand a lot about this, I change my rom with ice scream sandswich 4.0.4 it was working with 4.0.3. Where is the problem. Thanks for your help.
Sent from my GT-I9000 using xda premium
shockem said:
Either your phones wifi hardware is gone or your house.
So here's what you can do to narrow down on the problem.
Tell me if you can connect to any other wifi hotspots outside your house. If it does connect then problem is router if it doesn't than problem is with the phone.
Good luck.
Sent from my Nexus S using Tapatalk
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Click to collapse
Not necessarily. Setup of each router can change in numerous ways so as to stop certain devices from working, as can certain phone settings not allow connecting to certain routers. It is not quite so black and white, and we already know the router works.
daviki said:
I have the same problem but only at home .I don't anderstand a lot about this, I change my rom with ice scream sandswich 4.0.4 it was working with 4.0.3. Where is the problem. Thanks for your help.
Sent from my GT-I9000 using xda premium
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Click to collapse
Sounds like a channel setting problem. Easiest way is to open up your router config and change the channel between 1 and 12 and this shouldn't happen again. Alternatively you could mess around with your build.prop.
Harbb is right, you might want to test several things within your router:
Change channels (use 1, 6 or 11-12)
Set it to only use on b/g connections (don't use n)
Different authentication methods (WPA2 with AES, etc)
And make sure you don't have a limit on your DHCP settings (just to make sure you don't have a ton of devices connected so it's not handing more IPs) or MAC filter.
Okay, sorry for not replying sooner. I posted this, then went to bed.
@Harbb:
It does see the network, lets me connect, put in the password, and says it is connected. It always says the connection is poor when I know it should be a good connection. The phone then shows the wifi icon and up and down arrows inside of the icon...I never see a portion of blue. When I try to download from the market, it will act like it is working, then the icon will disappear/reappear numerous times before it tell me there is not a connection.
As for my router setup. I do not know what information will help in this but here is some info: I do not have MAC filtering on, WISH is active (dont use it), WPA2 Only Personal AES (this is what I use), Channel 6 (I have tried channel 11 because I read somewhere the Wii needed 1 or 11 or one of my devices needed it), Transmission rate is Best, Channel is Auto 20/40 MHz, Mixed b/g/n (to utilize N and G, it has to be on this setting, there isn't an option for Mixed n/g), it is set on 192.168.0.x, NetBIOS mode type is Mixed (Broadcast then Point to Point).
@shockem I have not tested it with any other hotspot to see if it is just a problem with that router and this phone. I will try if I can find an open hotspot and let you know.
@Billchen0014 It does detect the network and connects, but drops it constantly...I cant even download a <1MB file from the market.
@Harbb (2) Going by your advice to daviki...it looks like I need to check another router. I go by a Starbucks, so I will try their hotspot...unless it isn't free, then Ill look around.
Thanks everyone who is helping me with this.
@Oogway, I will try G only and see what happens...if I use Mixed it has to be g/b or b/g/n. As for DHCP there is only 2 maybe 3 devices connected and No MAC filtering
Could it be the Wifi country code issue?
Is that something on the phone? Also, I tested different channels (1, 6, 11) as well as b/g and g only. Still no go.
Sent from my Nexus S 4G using XDA
Thanks for the info. Test another hotspot (preferably one with a wpa2 password too if possible) and let us know. I'll reply later with some things to try as I gotta get going.
Okay, I did test one more thing. I sat right next to the router and it had full bars. Stayed full and my speed tests were great. Moved to where I sit on the couch about 30 walking steps away and no connection. I know the signal reaches because it is where I use laptops and other devices. The PS3 and Wii are further away and have no issue. It is not a clear path, but there aren't any doors between the router and the couch.
Just some more info...leading me to believe it is an issue with the phone. I get horrible service with Sprint also, so it may be connected. I don't know.
Any ideas? Is it just because of how far away I am?
Again, thanks everyone for the help. It has been so frustrating ever since I got the phone.
Sent from my Nexus S 4G using XDA
Wifi Analyzer can give you a dB reading on the signal strength if you'd like to try that from a distance too. Wifi at uni likes to show low bars quite often, however alot of the time i have great signal and it shows through wifi analyzer. May not be related since uni is a peap connection, but worth a shot anywho. Might give another hint on whether you should seek out warranty or router settings.
Hello, just got this, its the TF101
I am trying to get internet from my router in the house to this tablet, have the correct password etc (my laptop has no issues connecting) and it just keeps trying to "obtain ip address"
I have a s3 phone that I tried using as a hotspot to get internet to the tablet and that worked, is there something else I can try and get onto my home internet?
Please try and help! Thanks everyone.
The problem is probably your router. I'm guessing it's a problem with the way the router is handling the DHCP lease. Try setting up the Transformer with a static IP address and see if it gets connected to your wireless. If that works then I suggest getting a better router.
I had a similar issue with an old linksys router. Once I checked out the router everything works fine.
Sent from my Transformer TF101 using Tapatalk HD
Or just reset the router / update the firmware if the static IP works. Just make sure you check for the available static IP range in your router's config otherwise it may not work if you're assigning an IP from the DHCP range.
Do you use MAC-address filtering?
Switch it off in the router or just add the Mac-address of your TF101.