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.
Anyone has experienced this? at my office we use a time capsule as our wifi router as the office is 100% mac but the g tablet aint being able to connect, recons the network but aint connecting to it...
I use a time capsule at home and connect to it with no problems
Are they using a hardware address access list?
Got it! don´t know what happened buut the time capsule went idle somehow so after reseting the unit I got no problems.
Picked up my Desire S today, all seemed well at work playing with the phone menus etc but now I've got it home I'm having a nightmare trying to get it to connect to my wireless network. It can see the network ok and allows me to put in a password. The phone gives no incorrect password message and seems to connect but will then disconnect right away.
I've tried the static ip fix some people mention for wifi issues with this phone but it makes no difference, has this happened to anyone else?
I always forget to disable mac address filter on my access point when trying to connect with a new device.
Yeah I do have mac filtering on but adding the mac address or disabling address filtering altogether had no effect, but thankfully the phone is now working on my wireless network. For some reason it wouldn't connect until the new sim card I was given had become active, which is very odd!
Ok, so my wifi sometimes doesnt connect, however, as soon as i disconnect my back cover for some weird reason i get like one bar of connect which is normal and when i hold my finger on the gold thing i get fully working wifi but when i have my back cover one it sometimes doesnt show no wifi ssid's or sometimes it doesnt connect at all and sometimes it does connect and i have full signal but there is no internet passing through, would you say something is wrong with my back cover and i should buy a new one?
Anyoneeee??????????
Wifi working fine on laptop and wifes phone. I noticed that mine was dropping in and out since I updated to Lollipop on my Xperia Z3 two weeks ago. Today,its really bad-wifi icon displays for about 10 seconds then drops out for about 10,then comes in again etc. Reset the router, changed channel, no joy. Anyone else experience this?Anyone got a fix?
Tried deactivating stamina?
Yep, it's deactivated. Still doesn't fix it. It's very annoying. Only noticed it since Lollipop update. Anything else I can try?
EDIT-Just been reading online that baby monitors may interfere with wifi.......I've 2 baby monitors for my toddler and newborn......would this be causing my wifi to drop in and out???I've tried all 13 channels on my Sky broadband router but no luck....
My wifi drops in/out when the signal is poor so it may be related to the babyphones?
I've turned the 2 baby monitors off and wifi on z3 still dropping in and out. What next?? Is my phone damaged?
toby2111 said:
I've turned the 2 baby monitors off and wifi on z3 still dropping in and out. What next?? Is my phone damaged?
Click to expand...
Click to collapse
Try safe mode (Long press the power button, then long press the power off button onscreen, click ok) and see if the problem persists.
Have you tried different routers? Have you tried turning laptop/wife's phone into a hotspot and connecting to that? Get an app like wifi analyser and see it looks like your wifi is acting normal there. Is wifi turning off or is it just disconnecting from the router (the icon might be misleading).
It's staying on now in safe mode, thanks! But why is that happening? I did a factory reset as I thought phone was broken! Pity, I should have waited for your advice!
Edit, unstable again. Coming in and out.
Tried again this morning in safe mode. Problem still there. Wifi turns on then icon goes off and it searches and connects again. Then goes off etc. I downloaded wifi analyser but don't know what to do now?? I'm not very tech minded.
I'll look up how to turn laptop into hotspot. Thanks for your help so far.
PS -I just remembered that the Bluetooth on the phone kept connecting and disconnecting in my car this week.... Would that have anything to do with the wifi issue?
EDIT- downloaded virtual router plus to use laptop as hotspot-problem still there,connecting then disconnecting. Is the phone broken?