[Q] Wifi disconnecting when screen is off - Galaxy S II Q&A, Help & Troubleshooting

Hi guys, I have an issue with my wifi. Here is the scenario:
When I am at uni I use the wifi they provide. No proxies, just a password.
It is woking fine and data is syncing. However, only when the screen is on.
Whenever the phone takes a little nap, the connection seems to vanish as I do not get mails, messages (whatsapp), or facebook notes.
Now some weird facts:
It is working fine at home with my own wifi.
It is working fine for a friend (using an iphone4 at uni)
So it must be something specific to the S2 and the schools wifi. Any ideas guys?
Help is very much appreciated!

Go inside Wifi settings, Menu- Advanced and change Wifi policy to like this,
Sent from my GT-I9100 using Tapatalk

Thanks for the quick reply! My appologies for not mentioning this, but it was already set to Never.
EDIT: I am at home right now. Is this setting different for different wifis?

mephusio said:
Thanks for the quick reply! My appologies for not mentioning this, but it was already set to Never.
EDIT: I am at home right now. Is this setting different for different wifis?
Click to expand...
Click to collapse
Well I'd like to know why my goddamn wifi NEVER sleeps even though it's meant to sleep with policiy set to sleep then screen turned off!

Related

[Q] Streak 5 WiFi not reconnecting

This is something I have not seen while trawling through posts on this great forum.
if I connect my wifi to my home router it works just fine. If I leave the house and return sometime later it is still enabled but does not reconnect. Sometimes it also does it when coming out of sleep. I'm on ss1.2 but I'm fairly sure it did it with other roms. My wifi sleep policy is set to never.
To get it to work I have to either toggle wifi off and on or go to settings and manually reconnect
Anyone got any ideas ?
Many thanks,
malty
+1
Same setup. Same problem. Suspected my wifi router but maybe wrong.
Ensign.
Happens on mine too, if anyone has any info on what might be causing it, I am willing to troubleshoot on mine. For me it even happens on my work wifi.
Not sure what causes this, but I think it may be more of an Android issue than a Streak issue because I have seen similar complaints from the owners of many other Android phones.
Try going to Menu->Settings->Wireless & networks->WiFi settingsMenu key again->Advanced->WiFi Sleep policy
set this to Never
Another solution is to install an app that works in the background to deal with this. Blade WiFi fix is recommended by fards in the Gingerstreak thread. There are other apps that do the same thing.

[Q] WiFi Scanning every 2-3 seconds, HELP!!!

As the title said, my Verizon Fascinate scans WiFi every 2-3 seconds and a MAJOR drain in my battery. I believe it started when I flashed EH03 radio, but not really sure if that's the main issue. I have TSM Resurrection 2.1 ROM installed. My kernel is right now geewiz-2.5-kernel (updated on 1/22/12) but I also used KGB-EH03-FA16 Kernel with the same problem. What could be causing this and what can I do to fix it?
Please help!!!
You can set your wifi scan interval in the build.prop, I know there are other ways to do it too. A quick googling should yield a more helpful answer regarding all the ways it can be done.
I thought it only scanned when it's turned on and not already connected to a network though, are you turning it off when you're not using it? I guess I can't really see how else it would be draining your battery.
Turn off WIFI when not needed
In notification bar
Sent from my SCH-I500 using XDA App
k_nivesout said:
You can set your wifi scan interval in the build.prop, I know there are other ways to do it too. A quick googling should yield a more helpful answer regarding all the ways it can be done.
I thought it only scanned when it's turned on and not already connected to a network though, are you turning it off when you're not using it? I guess I can't really see how else it would be draining your battery.
Click to expand...
Click to collapse
Thanks! I will look up the build.prop solution to wifi scan issue. The problem is that it scans continuously regardless of whether it's connected to any network or not. And yes, I have to keep it turned off when I'm not using it.
*update* I checked the build.prop setting and it was set for 120. I'm assuming this is in seconds so shouldn't the wifi should only scan every 2 minutes??? I changed the setting to 600s=10min, but it still scans continuously What's going on???
You're correct, the interval you see in the build.prop is in seconds. If that isn't helping then I'm not really sure.. How can you tell it's continuously scanning? Is it an app you're using that shows this?
Sent from my SCH-I500 using Tapatalk
k_nivesout said:
You're correct, the interval you see in the build.prop is in seconds. If that isn't helping then I'm not really sure.. How can you tell it's continuously scanning? Is it an app you're using that shows this?
Sent from my SCH-I500 using Tapatalk
Click to expand...
Click to collapse
The little wifi icon in the status bar keeps going on and off. And when I tried to used the market app, it constantly said I needed a wifi connection.
Anyways, after some additional investigation, I tried turning off and resetting my wireless router - and it worked!!! I'm not sure if that was the only reason for continuous wifi scan, but at least it's not scanning every 2-3 secs now. Well, it hasn't for the last 24 hours, so hopefully it will stay that way
Glad it's sorted! I couldn't really tell from your posts exactly what was happening, but if it's doing that when you have wifi on and (hopefully) connected, then it sounds like more an issue with your wifi connection itself as opposed to just the phone's.
About the wifi scan interval in the build.prop, I believe that just refers to how often it will look for a connection when wifi is on, but not connected to a network.
k_nivesout said:
Glad it's sorted! I couldn't really tell from your posts exactly what was happening, but if it's doing that when you have wifi on and (hopefully) connected, then it sounds like more an issue with your wifi connection itself as opposed to just the phone's.
About the wifi scan interval in the build.prop, I believe that just refers to how often it will look for a connection when wifi is on, but not connected to a network.
Click to expand...
Click to collapse
yes that is correct. I also agree with the issue being related to the wifi and not the phone. i hardly use the wifi on my phone but when i do, i never have that problem. i got grandfathered into the unlimited data from verizon, so wifi for me is pretty much useless.

samsung galaxy s3 wifi not auto connect to home network

Please can anyone help.
Up till a couple of days ago my s3 would automatically connect to my wifi signal at home as soon as I walked into my house, haven't changed any thing but it no won't connect until either I reboot or switch wifi off and then back on again . Tried rebooting phone which works for the first connection but subsequently won't connect again after sleep or at least the phone not being used for a while. Also switching wifi off and back on again works but as before once wi fi shuts down it won't reconnect by just swiping the screen and taking the phone off of standby.
Hope that was clear enough lol
Many thanks Ian
hotlurve said:
Please can anyone help.
Up till a couple of days ago my s3 would automatically connect to my wifi signal at home as soon as I walked into my house, haven't changed any thing but it no won't connect until either I reboot or switch wifi off and then back on again . Tried rebooting phone which works for the first connection but subsequently won't connect again after sleep or at least the phone not being used for a while. Also switching wifi off and back on again works but as before once wi fi shuts down it won't reconnect by just swiping the screen and taking the phone off of standby.
Hope that was clear enough lol
Many thanks Ian
Click to expand...
Click to collapse
Its a well reported problem for some a search may find an answer .
jje
JJEgan said:
Its a well reported problem for some a search may find an answer .
jje
Click to expand...
Click to collapse
Reboot the modem/router and try again. If that doesn`t help press your wifi connection in settings and reinsert the password and reboot.
JJEgan said:
Its a well reported problem for some a search may find an answer .
jje
Click to expand...
Click to collapse
Yes I've found plenty of things relating to wifi issues on the phone but none specifically to this one so if anyone could help I would be grateful.
I assume you've tried forgetting the network and re-entering the details.
Also try playing with the Wi-Fi sleep policy, in the past this has caused some problems with the stability of the connection. Settings, Wi-Fi, menu, advanced.
Also it might be on the router side. Try changing the channel on the router, and if it's dual band set it to 2.4ghz instead of 5.
Sent from my GT-I9300 using Tapatalk 2
Back up data. Factory reset.
Update firmware.
Change kernel.
That's three possible fixes.
jje
Sent from my GT-I9300 using xda premium
Im getting very similar issues with my s3 trying to connect to a dlink router, works fine with the netgear one though. Did you manage to fix?
nadimsoze said:
I assume you've tried forgetting the network and re-entering the details.
Also try playing with the Wi-Fi sleep policy, in the past this has caused some problems with the stability of the connection. Settings, Wi-Fi, menu, advanced.
Also it might be on the router side. Try changing the channel on the router, and if it's dual band set it to 2.4ghz instead of 5.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
I cannot seem to get the WIFI Sleep to work at all. Even when set to NEVER on when asleep I can see in the battery stats that WIFI has stayed on the entire time. Any idea why this is?
can you tell us the ROM and kernel you are using (if you are using custom)? I have never had any issues with stock kernel myself.
also, did you hide your wifi SSID? in the past, it might cause some issues...

			
				
I was having the same problem, try this.. Setting - wifi - advanced - keep wifi on during sleep - Always.
I haven't noticed more battery use,
Sent from my GT-I9300 using xda premium
hotlurve said:
Please can anyone help.
Up till a couple of days ago my s3 would automatically connect to my wifi signal at home as soon as I walked into my house, haven't changed any thing but it no won't connect until either I reboot or switch wifi off and then back on again . Tried rebooting phone which works for the first connection but subsequently won't connect again after sleep or at least the phone not being used for a while. Also switching wifi off and back on again works but as before once wi fi shuts down it won't reconnect by just swiping the screen and taking the phone off of standby.
Hope that was clear enough lol
Many thanks Ian
Click to expand...
Click to collapse
if you want another option besides backing up your data, doing a full wipe, and reloading your data, try a different kernel...easy fix that seems to fix these problems most of the time...the kernel is responsible for your wifi, gps, bluetooth, cpu, gpu, etc...so swapping it out should fix an issue like that

[Q] Wifi turns off during sleep.

So whats happening is, im streaming pandora or spotify and the music just shuts off about a minute after the screen does. And when i turn the screen on the wifi icon at the bottom right is blank for a few seconds, then turns grey, then blue and the music starts again.
I have checked the option to never turn off wifi and installed wifi keep alive, and tried regpon keep alive but neither are working. I've also been through all the power options and unchecked anything that would suspend my network connection.
I know its not a router issue because I'm getting full bars and everything is fine as long as the screen is active and my other devices do not lose internet connection.
I'm also not using a Dongle. Any ideas?
Transformer Prime TF201
Do you get the same results with a charger plugged in?
peterk-1 said:
Do you get the same results with a charger plugged in?
Click to expand...
Click to collapse
Yes I did.
Unless there is something non standard about the TFP there would be no reason that your streaming apps couldn't retain a WiFi lock - Android programmers guide here http://developer.android.com/guide/topics/media/mediaplayer.html.
If a program such as regpon is needed then I see that regpon was last updated January 2011 - is it worth trying some other apps?
Tattoodood said:
So whats happening is, im streaming pandora or spotify and the music just shuts off about a minute after the screen does. And when i turn the screen on the wifi icon at the bottom right is blank for a few seconds, then turns grey, then blue and the music starts again.
I have checked the option to never turn off wifi and installed wifi keep alive, and tried regpon keep alive but neither are working. I've also been through all the power options and unchecked anything that would suspend my network connection.
I know its not a router issue because I'm getting full bars and everything is fine as long as the screen is active and my other devices do not lose internet connection.
I'm also not using a Dongle. Any ideas?
Transformer Prime TF201
Click to expand...
Click to collapse
I've had this same problem, and it started after the Jelly Bean firmware update. Doing a factory reset didn't help. I tried contacting ASUS' service department, but they sent me back a boiler plate response just telling me to do another factory reset. As far as I'm concerned, the tablet was broken by the update. It's pretty much useless for any task that doesn't involve the active use necessary to keep the screen awake. I'm going to try calling ASUS this weekend when I have time to sit on the phone, but I don't expect much. At this point I doubt its something I could fix myself (unless I root the thing and spend time poking around for whatever hidden setting is forcing wifi off during sleep) and am resigned to the tablet being broken baring some patch from ASUS.
I've seen some similar reports from other devices too though. Yet not a single solution other than trying those two apps (which didn't work for me either). I don't know if its ASUS' particular Jelly Bean setup or a more general Jelly Bean bug.
My wifi's turning off while the tablet sleeps as well. It's really annoying; hope Asus figures out some sort of solution for this.
Sent from my Transformer Prime TF201 using xda app-developers app
blackmage884 said:
I've had this same problem, and it started after the Jelly Bean firmware update. Doing a factory reset didn't help. I tried contacting ASUS' service department, but they sent me back a boiler plate response just telling me to do another factory reset. As far as I'm concerned, the tablet was broken by the update. It's pretty much useless for any task that doesn't involve the active use necessary to keep the screen awake. I'm going to try calling ASUS this weekend when I have time to sit on the phone, but I don't expect much. At this point I doubt its something I could fix myself (unless I root the thing and spend time poking around for whatever hidden setting is forcing wifi off during sleep) and am resigned to the tablet being broken baring some patch from ASUS.
I've seen some similar reports from other devices too though. Yet not a single solution other than trying those two apps (which didn't work for me either). I don't know if its ASUS' particular Jelly Bean setup or a more general Jelly Bean bug.
Click to expand...
Click to collapse
Thanks for the info. I did notice the problem after the jellybean update. I also just did a factory reset twice to try and fix the issue to no avail. Hopefully Asus rolls out a firmware update soon.
Tattoodood said:
Thanks for the info. I did notice the problem after the jellybean update. I also just did a factory reset twice to try and fix the issue to no avail. Hopefully Asus rolls out a firmware update soon.
Click to expand...
Click to collapse
Go to wifi settings. Hit the menu and go to advanced. Uncheck the box to disable wifi on sleep. Its a little tricky with JB as the menu button is up at the top. It should look like 3 little dots sacked vertically.
Sent from my Transformer Prime TF201 using xda app-developers app
pyraxiate said:
Go to wifi settings. Hit the menu and go to advanced. Uncheck the box to disable wifi on sleep. Its a little tricky with JB as the menu button is up at the top. It should look like 3 little dots sacked vertically.
Sent from my Transformer Prime TF201 using xda app-developers app
Click to expand...
Click to collapse
Although I appreciate your help, the problem isn't that we haven't set Wifi to stay on during sleep (or unset an option for it to be disabled during sleep). The problem is that our configuration choices are being wholly ignored or overridden by some setting we can't see. For example, my Wifi Advanced Settings is missing two of the settings that are visible in the screenshot you've posted. I've included what I see. I've also included a shot of the ASUS Customized Settings menu which also has a wifi use during sleep option.
The Wifi Timeout option on your screenshot has caught me eye though. It seems like there is something hidden on my tablet (and the others experiencing this problem) that is similar to that option. Again, this wasn't a problem for me before the Jelly Bean upgrade. Setting Wifi to always stay on during sleep under ICS worked just fine.
blackmage884 said:
Although I appreciate your help, the problem isn't that we haven't set Wifi to stay on during sleep (or unset an option for it to be disabled during sleep). The problem is that our configuration choices are being wholly ignored or overridden by some setting we can't see. For example, my Wifi Advanced Settings is missing two of the settings that are visible in the screenshot you've posted. I've included what I see. I've also included a shot of the ASUS Customized Settings menu which also has a wifi use during sleep option.
The Wifi Timeout option on your screenshot has caught me eye though. It seems like there is something hidden on my tablet (and the others experiencing this problem) that is similar to that option. Again, this wasn't a problem for me before the Jelly Bean upgrade. Setting Wifi to always stay on during sleep under ICS worked just fine.
Click to expand...
Click to collapse
My WiFi goes to sleep as well.
As the others I enabled all the settings to keep WiFi on.
Wondering if anyone has had any traction on getting this issue isolated or resolved. I have come across the same Wi-Fi sleep problem.
Thanks
rodernr said:
Wondering if anyone has had any traction on getting this issue isolated or resolved. I have come across the same Wi-Fi sleep problem.
Thanks
Click to expand...
Click to collapse
I don't want to speak too soon, but the latest update seems to have fixed things for me. The patch notes mentioned that they adjusted the wifi configuration to recognize Chinese characters. Maybe the changes they made also corrected our problem. I'm also on my family's router while home fpr the holidays. I'd read that some users in JB regaedless of their device were having this problem with older routers.
I am curious to here if it is resolved for you. I have done the JB update to 10.4.2.18 which had that fix and I still see this problem. In addition it happens on any network I connect to so I don't think the issue is there.
Thanks
Did you change the setting to WiFi on always during sleep?
Sent from my Transformer Prime TF201 using xda premium
ASAPSEVEN said:
Did you change the setting to WiFi on always during sleep?
Sent from my Transformer Prime TF201 using xda premium
Click to expand...
Click to collapse
shouldnt have to. a streaming app should keep the wifi alive.
I've tested my tablet with all the posted setting set to keep WiFi on during sleep while streaming Pandora and it works fine. I let my Prime sleep for over 10 minutes without interuption. I don't know if this makes a difference but I am docked and using the Pandora app not streaming through my browser (Boat). I then set my Prime to shut off WiFi at sleep and Pandora (on the app) kept straming until Pandora timed out. Strange indeed.
I'm on 10.4.2.18 not unlocked or rooted.
wifi deactivates unless plugged in when tablet sleeps
peterk-1 said:
Do you get the same results with a charger plugged in?
Click to expand...
Click to collapse
Noob here.......
I saw this post and have just run into this problem myself.
When my tablet screen sleeps, my alarm apps won't work, and none of my mail gets pushed UNLESS I have it charging.
Why does this happen, and is there a work around? I've designated my wifi to never sleep/always be on.
I'm using an Onda v972.
I had a rooted Nook Color, and this never happened with that. Same programs.
Thanks for your input.
solved it
I have solved it I have same problem on my tablet and I fix it by downloading an app called WiFi advance Locke
Skype Notification Problem
Hi,
Has this problem been resolved? When the tablet goes to sleep Skype notifications no longer sound.
I keep the Skype app running in the background at all times. WiFi is set to not disable.
Any help appreciated.
pyraxiate said:
Go to wifi settings. Hit the menu and go to advanced. Uncheck the box to disable wifi on sleep. Its a little tricky with JB as the menu button is up at the top. It should look like 3 little dots sacked vertically.
Sent from my Transformer Prime TF201 using xda app-developers app
Click to expand...
Click to collapse
Well I found your answer by searching for this issue. I'm sure your answer solved my problem. Thanks!

[Q] Wifi problem after MM update

I come from Italy and I updated my device on March, as everyone, I think. My device is now perfect except the wifi. The wifi disconnect during the stanby and it connects only using the static mode. I also have this problem even if I changed the wifi option for the stanby in "always". Another strange thing is that the wifi is reported as one of the main cause of consumption, as it is shown in the screeshot
I'm having WiFi issues as well since MM. It's set to Active on Sleep, but whenever I wake my tablet, it's disconnected and having much difficulties to re-connect.
I assumed it was some Xposed thing I'm running, haven't tested it 'clean'. Also, I'm on AndroPlusKernel v22. Not v22a yet.
presofista said:
I come from Italy and I updated my device on March, as everyone, I think. My device is now perfect except the wifi. The wifi disconnect during the stanby and it connects only using the static mode. I also have this problem even if I changed the wifi option for the stanby in "always". Another strange thing is that the wifi is reported as one of the main cause of consumption, as it is shown in the screeshot
Click to expand...
Click to collapse
Hi,
For the static mode try to change the DHCP client in the setting->developpers option.
Where are the developper options?
presofista said:
Where are the developper options?
Click to expand...
Click to collapse
In setting->about the tablet -> tap 7 or 8 times to the build number and developpers options Will be enabled
presofista said:
The wifi disconnect during the stanby
Click to expand...
Click to collapse
Same problem here
Version .163
Stock kernel
Wifi standby settings to "always"
5Ghz wifi
Sometimes (not always) wifi disconnected after standby
DHCP working here
Maybe it is linked to wifi router problems during standby. I had wifi problems already before MM (! sign at wifi symbol). Maybe the difference now is that it isn't reconnecting in standby anymore after wifi failure. But just a guess...
At least it's not how option "always" should work...
allofmex said:
Same problem here
Version .163
Stock kernel
Wifi standby settings to "always"
5Ghz wifi
Sometimes (not always) wifi disconnected after standby
DHCP working here
Maybe it is linked to wifi router problems during standby. I had wifi problems already before MM (! sign at wifi symbol). Maybe the difference now is that it isn't reconnecting in standby anymore after wifi failure. But just a guess...
At least it's not how option "always" should work...
Click to expand...
Click to collapse
Hi,
Maybe it's related to your router lease time that send a new DHCP address after lease time. Check if the lease time is set to "permanent"
killdozer56 said:
Hi,
Maybe it's related to your router lease time
Click to expand...
Click to collapse
Thanks for reply. It's set to three weeks, so not the reason.
(But even then it must renew the lease and not stop the wifi.)
I'll get new router soon, let's see if something changes...
allofmex said:
Thanks for reply. It's set to three weeks, so not the reason.
(But even then it must renew the lease and not stop the wifi.)
I'll get new router soon, let's see if something changes...
Click to expand...
Click to collapse
I have the same issue but I actually have the turn off wifi in sleep enabled but it still shows up that its being used in sleep when I look at battery
The problem:?*
I connect it to the Wi-Fi and it works fine for about 5 minutes. As I'm watching YouTube videos every 5 minutes the video pauses and starts to buffer until it eventually say connection lost. Meanwhile the tablet still claims that Wi-Fi is still connected and with full connection. This also happens with web pages and apps that require and internet connection.
Temporary fix:
Turning Wi-Fi off and back on again fixes it, but only for a few minutes.
What have I tried to fix it?
I've tried everything from a factory reset to a software repair.
OS: Android 6.0 (Marshmallow)?*
Build Number: 32.1.A.1.185
Any help would be much appreciated. Thanks in advanced.
ElPatron17 said:
The problem:?*
I connect it to the Wi-Fi and it works fine for about 5 minutes. As I'm watching YouTube videos every 5 minutes the video pauses and starts to buffer until it eventually say connection lost. Meanwhile the tablet still claims that Wi-Fi is still connected and with full connection. This also happens with web pages and apps that require and internet connection.
Temporary fix:
Turning Wi-Fi off and back on again fixes it, but only for a few minutes.
What have I tried to fix it?
I've tried everything from a factory reset to a software repair.
OS: Android 6.0 (Marshmallow)?*
Build Number: 32.1.A.1.185
Any help would be much appreciated. Thanks in advanced.
Click to expand...
Click to collapse
You know I had this problem even on lollipop. I sent my tab off for repair and they said nothing was wromg with it.
RJASSI21 said:
You know I had this problem even on lollipop. I sent my tab off for repair and they said nothing was wromg with it.
Click to expand...
Click to collapse
Same I was having it on lollipop too. They told me to send it in for repair but I just ignored them cuz there's no point. It's a software issue not a hardware issue. They're not going to find anything wrong with my tablet. It's in perfect condition.
ElPatron17 said:
Same I was having it on lollipop too. They told me to send it in for repair but I just ignored them cuz there's no point. It's a software issue not a hardware issue. They're not going to find anything wrong with my tablet. It's in perfect condition.
Click to expand...
Click to collapse
ill be honest i genuinley thought that my hardware was playing up lol thanks for clarifying this haha.
RJASSI21 said:
ill be honest i genuinley thought that my hardware was playing up lol thanks for clarifying this haha.
Click to expand...
Click to collapse
???? Na bro you're hardware is most likely perfectly fine. Sony just needs to fix the software and we're good.

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