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Hi,
Could anyone tell me what's the rationale behind this:
When the device connects to the internet via 3G in order to receive mail or whatever, it will just stay connected until you bother to manually disconnect it. But when using wifi, which unlike 3G doesn't cost by the byte, it will disconnect as soon as the screen goes off?
Why on earth is that? Instead of running the hell away from cellular internet as soon as possible it does so with the free wifi? Is there any way to change this behavior? Or am I the only one who's bothered by this?
Besides that, more often than not, I'm having problems connecting to wifi... sometimes it would attempt to connect to a network and then give up and say it's unavailable (even though the signal is excellent and I'm right by the AP). other times, it appears connected but there's no internet... anyone else has these problems? Is my device defective?
Sorry if I'm ranting...
Thanks!
I think the behaviour is to save energy. When the screen goes off, the device "thinks" you don't use it anymore. Wifi drains your battery very fast, so the phone tries to reduce it.
For 3G it's the point, that there isn't much data transfer in order to stay connected. Maybe a few kb for the whole day (I don't know if there is any data transfer anyway, but when it's verly little). That's much cheaper than to pay for the full block (for example 100kb) everytime you disconnect. So staying connected saves money in most cases. That's why.
Connection problems: Do you use any encryption? Maybe that's the problem. So far I use wifi only for data transfers between my Macbook and the device. But I don't have any problems.
If you search hard enough you can find apps that might jus tkeep it on.
One such app is KaiserTweak which will keep that wifi on when screen goes off. problem with kaisertweak is that i have heard it can hard reset some peoples devvices, depending on what options you select.
i might give it a whirl because i hate it when my connection is lost, i end up using my data connection when i dont need to as it tries to take over when device wakes up!
edit: seems ok so far no hardreset yet!
Thanks, will try that.
I flashed a 6.1 rom and it seems to have made an improvement. Now it would connect fine to my home router every time and not just occasionally (it uses the most basic wep encryption). Still no luck at work though... just as before it appears connected but I can't reach anything inside or outside the lan. The encryption there is the more secure wpa-psk and there's no mac filtering.
Anyone successfully connected to a wpa wlan?
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
Click to expand...
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.
Hey,
Was wondering if anyone had any solutions to this issue.
I can connect to my router with the asus transformer, successfully get an IP, but can not connect to the external web. I can make internal connections, but again, nothing external. I have no problem with my samsung sgs i9000m, various laptops, ipod touch, etc etc..
The router in question is a speedtouch 780 (dsl modem, voip, and router in one). Ive tried various encryption schemes, and even tried to leave it open but to no avail.
I can create a wifi network with both my imac, and with my samsung sgs and the transformer can connect, and also move internet data!
Very weird, I dont even know where to start trouble shooting, can anyone help?
aquenne said:
Hey,
Was wondering if anyone had any solutions to this issue.
I can connect to my router with the asus transformer, successfully get an IP, but can not connect to the external web. I can make internal connections, but again, nothing external. I have no problem with my samsung sgs i9000m, various laptops, ipod touch, etc etc..
The router in question is a speedtouch 780 (dsl modem, voip, and router in one). Ive tried various encryption schemes, and even tried to leave it open but to no avail.
I can create a wifi network with both my imac, and with my samsung sgs and the transformer can connect, and also move internet data!
Very weird, I dont even know where to start trouble shooting, can anyone help?
Click to expand...
Click to collapse
Sounds daft but i assume to have tried rebooting the router .... my router occasionally gets confused based on the sheer number of wifi hardware we have in the house .... otherwise have you tried changing the wifi channel ? read somewhere else that people were having problems with channel 13 ???
hey thanks for the reply.
Yes probably rebooted the router a half dozen times, restored firmware, no go.
Ive bounced around a few channels, doesnt seem to have any effect.
Im really stumped!
aquenne said:
hey thanks for the reply.
Yes probably rebooted the router a half dozen times, restored firmware, no go.
Ive bounced around a few channels, doesnt seem to have any effect.
Im really stumped!
Click to expand...
Click to collapse
so im assuming you cant even get to the market ?
no not via the router, the little wifi icon at the bottomcorner stays gray (means connected, but not to the google servers, it goes blue when it does connect to the google servers.)
It does connect and go blue when i create a wifi network from my cell phoneusing my cell data connection
aquenne said:
no not via the router, the little wifi icon at the bottomcorner stays gray (means connected, but not to the google servers, it goes blue when it does connect to the google servers.)
It does connect and go blue when i create a wifi network from my cell phoneusing my cell data connection
Click to expand...
Click to collapse
well on the plus side that implies its not a TF hardware or setting issue
not sure I can help on the router front as im no expert have you checked what IP address its allocated ? are you able to see the TF from the router info page ?
wilbur-force said:
well on the plus side that implies its not a TF hardware or setting issue
not sure I can help on the router front as im no expert have you checked what IP address its allocated ? are you able to see the TF from the router info page ?
Click to expand...
Click to collapse
yeah im thinking its a router issue.
i can see the transformer, it appears to look exactly the same as all other wifi devices that connect to the router...
stumped =/
Under your wifi settings long press your wireless network under the list of networks available, you should get a "modify network " link pop up, change the setting from DHCP to Static and enter your settings manually. Had a similar issue with an iPod touch once, wouldn't go on the internet unless it had a static address even though all settings were identical to what it pulled from the router using DHCP.
Update Transformer firmware? Leaked official 3.1 is out has updated wifi drivers too.
If no go after that, factory reset the Transformer.
nxt said:
Update Transformer firmware? Leaked official 3.1 is out has updated wifi drivers too.
If no go after that, factory reset the Transformer.
Click to expand...
Click to collapse
I have the same problem with my TF101, I did all of the above, but the WIFI indicator stays grey. I have a good connection with my router.
When I connect with the router at my work, I have the same. So, the problem is TF101 related. When I bought it two weeks ago, it worked. Two days ago I flashed Prime 1.4, and that worked too. Since yesterday I have this problem, and I tried all to solve it. Other firmware, factory reset....everything. Can somebody please help me with this?
Not sure what this issue is, I never had it with the previous WiFi build, only after the 3.1 changes. I have had several occasions where sitting within 5 ft of router, it would not connect. reboot solved it each time, but I have noticed that it appears dependent on when you unlock during the boot sequence. If you let the boot sequence complete before unlocking, it never happens. If you unlock during the boot sequence, it might.
ASUS Tech Support please note.
@rumbleweed : thanks for the response!
Update : I pushed the original 3.0.1 WW blob to /data/local/ with ADB to unroot my TF101. After that the WiFi icon stayed gray, but I had a working internet connection. Later I updated it to WW 3.1. To be sure I did a factory reset, and now it is working again. First the WiFi notification icon stays gray for a few minutes, but after that it went to blue. I have a unrooted 3.1 WW TF101 now, but I'm happy!
aquenne said:
Hey,
Was wondering if anyone had any solutions to this issue.
I can connect to my router with the asus transformer, successfully get an IP, but can not connect to the external web. I can make internal connections, but again, nothing external. I have no problem with my samsung sgs i9000m, various laptops, ipod touch, etc etc..
The router in question is a speedtouch 780 (dsl modem, voip, and router in one). Ive tried various encryption schemes, and even tried to leave it open but to no avail.
I can create a wifi network with both my imac, and with my samsung sgs and the transformer can connect, and also move internet data!
Very weird, I dont even know where to start trouble shooting, can anyone help?
Click to expand...
Click to collapse
Hi i had this same problem when i first unboxed my Asus TF, Wifi said i was connected to my Linksys router, and i even had an IP address but no internet.
In my frustration y plugged it to my PC which is connected with an ethernet cable to the router and voila, internet icon changed from grey to blue and 2 small arrows started to appear. The internet was now working and i updated the thing from 3.0 to 3.2.
Not sure why this happened but ever since that time i have no problems connecting even on different routers and modems.
Hope this helps.
Had this problem myself from unboxing, tried everything suggested and still no joy.
went and got a linksys router to replace my dlink, everything working fine. tried it with a few networks now and seems to be a problem with dlink routers.
I have this same issue at my school. Up until 3 weeks ago it would always give me blue, then randomly it started staying on white. I can use the net, just not connect to the Google servers.
It works fine everywhere else.
Strange.
Try playing with the wifi disconnect policy?
having a different problem here. been using my home internet since unboxing. all was fine. then one day the connection was grayed. tried rebooting and everything didnt work. i went to setting, clicked forget network. then it never appeared again.
and yeah, its a dlink router. any help ?
Problem: fixed!
I had a solid wifi connection most of the time, complete with a solid blue wifi icon. But my wifi was EXTREMELY slow and intermittent. After a great deal of forum searching and trying every possible suggestion, the solution that finally worked for me was to change the channel on my router from 'Auto' to 6. Flawless connection now, and no more dropped signal.
Hi there,
I tried one thing - took off the lock feature from my transformer and now it's back to normal.
If I turn it back on I am back to square one.
Can anyone figure out how the lock feature affects the WIFI connection ? Is there a bug and is there a fix ?
b4dad said:
Had this problem myself from unboxing, tried everything suggested and still no joy.
went and got a linksys router to replace my dlink, everything working fine. tried it with a few networks now and seems to be a problem with dlink routers.
Click to expand...
Click to collapse
Jumping in a bit late, but am having similar issues. Just got my TF but have not been able to connect to my dlink router (dir-655 - onlyl couple months old). The router works fine for everything in the house. I know the settings well and have tried many things (went through all channels one by one, messed with different WPA security options, even removed security, etc). Nothing allows me to even connect to the router/network.
In the Wifi settings is jut keeps saying 'connecting...' and 'scanning...' over and over. I am about to take this thing back as I really can't buy a new router at this point (no new firmware for router is available by the way, I checked).
Has anyone confirmed that dlink routers can work with the TF and if so, what are the settings you are using (channel, WPA security settings, dhcp or static, etc)?? This driving me nuts. I want to keep this TF but won't if I can't get it to work at home.
Oh and by the way, when I use my Droid Inc 2 as a hotspot with WPA security, the TF connects without issue. So the TF appears to be fine, it is definitely related to the dlink router.
Thanks!
Has anyone had any issues with not connecting to WIFI in some situations? Like if im at a starbucks, i cant get connected to the wifi. In the settings it only displays "Obtaining IP Address" but it stays like that with it never obtaining the IP address. To top it off, at work i cant connect to WIFI yet i have a co-worker whos phone connected with no issues at all. Also the power button on my unit is mushy and has zero click to it. Where once again, my coworkers is springy and nice.
If i exchange this one out, it will be my third as the first phone i exchanged had a huge hair in between the back of the phone as if it was molded while a hair was in the machine that makes the plastic molds. Any thoughts? Should i go for a third and just replace it? Thanks.
Hi there, I've had a lot of help through this forum in using my Android tablet without registering, so I thought this could be the best place to ask a question that's beginning to wreck my head.
I have a Versus 7 Touchpad, and while I know it's just a rebranded something or other made in China, it's actually a decent tablet for the price of €100. Anyway, recently I installed the TPlink TL-WA730RE wireless repeater at home and just have had no luck in getting the tablet to connect to the repeater whatsoever. My android phone (Xperia T), my wife's Nokia E5 and my Compaq PC all connect to the repeater fine and can browse the web/network no problem. However, the tablet just says 'connecting' (to the network) but then reverts back to 'saved, secured with WPA' etc. I know it's trying to connect because if I log onto the repeater through my PC every few minutes the MAC address of the tablet appears along with the status of 'STA -ASSOC', which I think means that the unit is trying to associate with the repeater, but then it just disappears. It may be worth noting at this point that the tablet connects to my TPlink TL-WR841N wireless router running DD-WRT no problem.
I've tried almost everything I can think of, like 'forgetting' the network and reconnecting, ensuring MAC address filtering is disabled, trying static instead of DHCP, resetting my router and repeater etc etc. I even tried apps such as 'wifi strongest signal' from the app store which connects you to the strongest access point in your house if you're using a repeater and walking around. The latest thing I did was to install CM10 on the rooted tablet and everything works apart from the wifi with the repeater, so it wasn't a fault with the original image. Also, the tablet was running ICS 4.0.4 I think, which was the same version of Android as my Xperia T, which connects perfectly.
The last thing I can think of trying is updating the repeater firmware, or installing DD-WRT on it also, but I'm loathe to do that seeing as all of my other equipment is working fine. Other than that maybe there is some sort of updated wifi driver I could try for the tablet itself??
Any ideas would be greatly appreciated!
Just incase anyone else has similar problems with this or any other android tablet, I managed to solve the problem after weeks of headaches.
The problem was that my TPLink wifi repeater's channel width was set to 'auto', where I had other options of 20mhz and 40mhz. Once I paired these with my router -i.e- both the router and the repeater were both set to a wireless channel of 20mhz, my tablet worked perfectly fine. Obviously some equipment can handle the difference in channel width, just not the Versus 7 Touchpad wifi.
Hope this helps someone in the future.