[Q] Mobile data network doesn't disconect when on WiFi - Galaxy S II Q&A, Help & Troubleshooting

3 out of 4 times my phone fails to disconnect the mobile data network when I connect to WiFi. This is draining my battery unnecessarily.
What could be causing this unless I can fix it so it is automatic I will have to stop using wifi so it doesn't waste power keeping both connections going.
I am running a 2.3.6 rom.

Do you toggle the connections or just enable/disable WiFi? When you enable WiFi and connects, does the 3G icon (the two arrows) appear next to the WiFi icon?

my phone does both I have a program that shuts it completely off when I go to work then back on when i get home based on time.the rest of the time it is on even if I go away which then it just disconnects but wifi is still on.
I have not paid enough attention to when it happens but when it does I have both the wifi icon and the data arrows at the same time.

shadowofdarkness said:
I have a program that ...
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Click to collapse
I think you just answered your own question

What program are you using? Might a suggest a change for Juice Defender for example? or many others that do the same thing...

Related

WiFi issue on my Hero...

Hello everybody!
Someone of you has noticed a poor WiFi reception on Hero?
I'm experiencing a poor WiFi reception in my house when Hero is connect to internet thru an access point.
What happen is that after WiFi connection has been established the phone tends to loose it and restart connection thru GSM/3G link.
That happen also if phone stay in the same place without moving around and also when phone is close to access point location.
Any idea about way to solve the problem?
Regards.
Alex
ale.agos said:
Hello everybody!
Someone of you has noticed a poor WiFi reception on Hero?
I'm experiencing a poor WiFi reception in my house when Hero is connect to internet thru an access point.
What happen is that after WiFi connection has been established the phone tends to loose it and restart connection thru GSM/3G link.
That happen also if phone stay in the same place without moving around and also when phone is close to access point location.
Any idea about way to solve the problem?
Regards.
Alex
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Just an upgrade on issue...
If I turn off data connection thru GSM/3G and switch on WiFi seem that WiFi connection is stable so maybe issue come when both data connection are enabled...
Anyway is annoying shout down each time data connection on GSM/3D and power on WiFi!
Regards.
i believe wifi goes idle when not in use. so it connect to 3g or edge. However there is an app if not various in the market already to help keep wifi always on..
Do a search for wifi and see for yourself.
minogue said:
i believe wifi goes idle when not in use. so it connect to 3g or edge. However there is an app if not various in the market already to help keep wifi always on..
Do a search for wifi and see for yourself.
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Thanks for suggestion!
At now I've solved turning off GSM/3G data connection when I'm at home anyway I guess that WiFi reception sometimes go away due to issue of the phone or maybe as way to save battery...
when that happen phone stay unconnected so I guess that should be better if I will check for apps that keep WiFi connection always working!
Alex
when the device goes into standby, the wifi is turned off to save battery poweer, and it will go back to 3G.
go into the wifi settings, press menu and select advanced.
select the timeout options
set to never and it will not turn off when in standby.
problem solved and you shouldn't have to turn off Mobile data, although with the settings widget on your homescreen turning mobile data off off each time is hardly going to ruin your life. in fact i tend to do this anyway, just cos i have spent too many years with windows mobile....
Here's an annoying bug I've found tho - on TMob UK
If I send an MMS from home, wifi on, it sits there, and doesn't send the message. Until I turn off wifi and 3G kicks in again.
Now I know for a fact that on my Magic, it was able to turn on 3g/HSPDA to send the message all by itself. Might have a look in thodse advanced settings tho to see if there is something I can do.. Not a biggie, just a bit of an annoyance.
Dayzz
Dayzee said:
Here's an annoying bug I've found tho - on TMob UK
If I send an MMS from home, wifi on, it sits there, and doesn't send the message. Until I turn off wifi and 3G kicks in again.
Now I know for a fact that on my Magic, it was able to turn on 3g/HSPDA to send the message all by itself. Might have a look in thodse advanced settings tho to see if there is something I can do.. Not a biggie, just a bit of an annoyance.
Dayzz
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I too, have been doing a search on Forums all over Google looking for a resolution to this.
I have noticed if Wi-Fi is enabled I am unable to send or receive MMS messages.
It is an annoyance having to turn Wi-Fi off each time also I am never to know if someone has tried to send a message in the first place.
Currently using T-Mobile G2 (rooted with MCR Rom 2.8) on T-Mobile UK

Wifi auto connect

This seems to be a problem with android itself. Wifi never automatically connects to saved networks when in range.
I have to use an app called wifi fixer to monitor my wifi connection- it connects to a wifi network that I have saved when it is in range.
Below were my original questions I posted in the general section by mistake. After a lot of searching I found the folder organizer app can create short cuts to folder or categories for apps. So I can have a short cut in the launcher that goes to all my games, or utilities.
I haven't figured out how to make the cell radio being turned of be persistent. So I just have my device set to airplane mode- but when I reboot it I have to turn the wifi back on.
DJ-VAN said:
1. I'm on StreakDroid 1.6.0 and everything is gravy cept for WIFI not connecting automatically. That seems to be a problem with Android itself. For me it is a problem because I'm not using a dataplan because I get free wifi through my cable co. I'm using csipsimple with my old gizmo5 account that I bought with my n810.
2. Does any launcher do app draws? I'm using Launcher pro and it would be nice if I could put a folder in the dock to store all my games.
3. Anyone know if I can use 2 bluetooth controllers with this on emulators? I'm still waiting on my Datel classic wiimote but it would be awesome if I could use two controllers.
4. How do I remove the No Sim card message? I use this as a wifi device and I had it set to airplane mode for a while but then I found the app "any cut" and made a short cut to turn off the cell radio. Apparently if I have it set to airplane mode it turns off wifi by default- and I thought that was the reason why wifi doesn't connect automatically but I still have to manually initialize wifi. I have wifi set to never sleep btw*
5. Turning off the cell radio isn't a persistent setting it seems. Does the cell radio still use battery power if there's no sim card in the device?
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Streak WIFI Issues
I am having the same problem. Running 2.2 with 318 baseband. Phone can find wifi but will not stay connected. Phone goes into an endless cycle of connecting and immediately disconnecting. I am able to get WIFI to work by putting the phone into airplane mode. Anyone have a fix??
Are you using the stock rom or dj_steve's? I've heard of people getting disconnected from wifi if the signal is weak. There's a way to turn of data on 3g under wireless settings. I believe that would prevent it from switching between 3g and wifi connections.
I don't really have this problem though. Once it connects to one of my saved networks it stays connected. It's just that android doesn't do this automatically when a saved network is in range.
WIFI Issues
I'm on stock rom. WIFI signal doesnt seem to be in the issue as I have been within 5 feet of the router and had the issue happen. I'm reluctant to turn 3G off as I need it on to make and receive calls in my house via Microcell.
You probably have to change that setting under wifi that puts the wifi radio to sleep when the screen turns off. I have mine set to never.
You may also want to run wifi fixer- which will automatically reconnect you when you get disconnected.
I'm going to try this:
http://forum.xda-developers.com/showthread.php?t=907772
The 2 programs that I use have helped me with my WIfi issues. Its not 100% but it does work 95+% for me.
http://www.appbrain.com/app/[email protected]/com.aebeinroth.wifihome
http://www.appbrain.com/app/blade-wifi-fix/com.bladewififix
Try rebooting your wireless router. I have 2 netgear wgr614's. One at home, the other at work. After several connect/disconnects, it goes in the connecting/disconnecting loop until I reboot the router. Go figure...
What I did that seems to have worked is to set up a static IP address instead of having the router assign it for me (DNS). Since then my Wifi connects every time. I could be wrong but it seems to have worked for me.
Sent from my Dell Streak using XDA App
I'm a dumba... You're correct. DHCP
jabreu203 said:
What I did that seems to have worked is to set up a static IP address instead of having the router assign it for me (DNS). Since then my Wifi connects every time. I could be wrong but it seems to have worked for me.
Sent from my Dell Streak using XDA App
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You mean DHCP not DNS. Mine always connects when tuurning wifi on but if left on and my streaks sleeps for an extended amount of time it will not connect till I turn wiring off then back on. I also have wifi sleep policy set to never. Had that issue with nexus one as well.
Sent from my Dell Streak

[TIP] Smart Action: WiFi Connection

Just thought I'd share something that is really working for me in terms of battery life:
Create a smart action that disables cellular data whenever you are connected to a WiFi network.
I have been consistently getting 12+ hours of battery with moderate to heavy use when on only on WiFi.
Thanks for the tip. I will definitely try this.
pdefazio said:
Just thought I'd share something that is really working for me in terms of battery life:
Create a smart action that disables cellular data whenever you are connected to a WiFi network.
I have been consistently getting 12+ hours of battery with moderate to heavy use when on only on WiFi.
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I have the same setup. Also have an action when I turn my screen off it disables wifi, background sync, cell data, and GPS. 12+ hrs here also.
Sent from my DROID RAZR using Tapatalk
I was thinking about setting something like that up, but was worried about interference with calls & SMS & junk... Any problems to report?
\\Carved into this thread by my RAZR//
http://android-gz.com
bebeau25 said:
I have the same setup. Also have an action when I turn my screen off it disables wifi, background sync, cell data, and GPS. 12+ hrs here also.
Sent from my DROID RAZR using Tapatalk
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Why would you turn data off when screen is off??? Don't make sense doing that.
On mine data turns off the moment I connect to WiFi and that is the way it is supposed to work. Do you see a H, E, or whatever data icon next to the bars when you connect to WiFi? If not, it means data is already off. Why use the smart action then?
IP IHI II IL said:
I was thinking about setting something like that up, but was worried about interference with calls & SMS & junk... Any problems to report?
\\Carved into this thread by my RAZR//
http://android-gz.com
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Calls and SMS you should be fine with because they do not require a data connection.
Szadzik said:
On mine data turns off the moment I connect to WiFi and that is the way it is supposed to work. Do you see a H, E, or whatever data icon next to the bars when you connect to WiFi? If not, it means data is already off. Why use the smart action then?
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IIRC, although a WiFi data connection superceeds a cellular data connection when it is active, the 3G/4G radio is still alive even if it isn't involved in data transfers during that time..
I've certainly noticed improved battery life when on WiFi but explicitly turning the 3G/4G (mobile data) radio off.
jms_uk said:
IIRC, although a WiFi data connection superceeds a cellular data connection when it is active, the 3G/4G radio is still alive even if it isn't involved in data transfers during that time..
I've certainly noticed improved battery life when on WiFi but explicitly turning the 3G/4G (mobile data) radio off.
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+1
Sent from my DROID RAZR using xda premium
The only problem i had with this was with MMS messages. can't send or receive MMS.
MrFrankfromCM said:
Why would you turn data off when screen is off??? Don't make sense doing that.
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Click to collapse
How not?? Your screen is off and 3G/WiFi is killing your battery for no reason (unless you are downloading or background sync on for a reason), so why not have it off when screen is off and save battery. I still stick with JuiceDefender for this.
jms_uk said:
IIRC, although a WiFi data connection superceeds a cellular data connection when it is active, the 3G/4G radio is still alive even if it isn't involved in data transfers during that time..
I've certainly noticed improved battery life when on WiFi but explicitly turning the 3G/4G (mobile data) radio off.
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Click to collapse
1. Data radio is one and the same with your cellular calls radio, so unless you go into flight mode, it is going to be active.
2. If it is not sending or receiving data it is not using more energy than when data is disabled and cellular stays enabled.
Szadzik said:
1. Data radio is one and the same with your cellular calls radio, so unless you go into flight mode, it is going to be active.
2. If it is not sending or receiving data it is not using more energy than when data is disabled and cellular stays enabled.
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Interesting you say that, but I've noticed that as far as the what the phone's reporting via settings/toggle widgets etc.. "mobile data" is still active when WiFi is active (even if its status disappears from the notification bar and no actual mobile data activity is going on).. and, it can be explicitly turned off - leaving you still able to receive calls etc. Perhaps its not turning the
radio "off" per-se, but its definitely seems to be doing something over and above just letting WiFi take precidence for data transactions..
I've definitely noticed an improvement in battery life by doing this, over and above simply turning on and connecting to WiFi and NOT explicity turning mobile data off..
I also noticed that in some older versions/flavours of android (2.1, 2.2) the option to explicitly turn off "Mobile Data" wasn't present, relying instead (I assume) on what you've described above..
Szadzik said:
1. Data radio is one and the same with your cellular calls radio, so unless you go into flight mode, it is going to be active.
2. If it is not sending or receiving data it is not using more energy than when data is disabled and cellular stays enabled.
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I don't believe this is correct. I believe the Wi-Fi chip is independent of the cellular antenna. That is what I have seen in every tear down of the phone.
Sent from my DROID RAZR using xda premium
pdefazio said:
I don't believe this is correct. I believe the Wi-Fi chip is independent of the cellular antenna. That is what I have seen in every tear down of the phone.
Sent from my DROID RAZR using xda premium
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Where did I say WiFi radio and cellular radio are in one chip? I said DATA and CALLS chip is one and the same.
I thought that it would be better to bring back an old thread rather than start a new one.
I have a smart action as described in this thread that turns off cellular data whenever I am connected to wifi. However, the problem I have is that cellular data does not turn back on whenever I disconnect from wifi. I have to manually go into my settings and enable data. Has anyone else run into this?
buck i said:
I thought that it would be better to bring back an old thread rather than start a new one.
I have a smart action as described in this thread that turns off cellular data whenever I am connected to wifi. However, the problem I have is that cellular data does not turn back on whenever I disconnect from wifi. I have to manually go into my settings and enable data. Has anyone else run into this?
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I sorta have the same(ish) problem. Data can take a little while to activate after I'm disconnected from WiFi. Every once in a while, I need to turn airplane mode on and off in order for data to turn blue. The fact that MMS messages are disabled with this Smart Action is a little disappointing too, but I don't receive enough while I'm home to be super frustrated by it...
\\Carved into this thread by my RAZR//
http://android-gz.com
I think the problem is to do with Smart actions not returning your device back to the exact state it was in before the action was triggered.. Possibly also issues with other smart actions interfering with the state of other parameters..
I wonder why Moto didn't go with an 'exit action' approach used by apps like Tasker?

Wifi Keeps Dropping

Connected to home network, I keep the wifi on my S3 on all the time and it seems to be connected (from the icon in the top bar) but there is no data connectivity.
I have to manually switch wifi off then back on for the internet connection to start working again. This is the case after waking the phone up, and also just when the wifi has been on for longer than a few minutes even when the phone is in use.
Keep Wifi on during sleep is set to ALWAYS.
Does anyone know if this is a common s3 problem or is it specific to my device, and are there any fixes?
Thank you.
uzzy said:
Connected to home network, I keep the wifi on my S3 on all the time and it seems to be connected (from the icon in the top bar) but there is no data connectivity.
I have to manually switch wifi off then back on for the internet connection to start working again. This is the case after waking the phone up, and also just when the wifi has been on for longer than a few minutes even when the phone is in use.
Keep Wifi on during sleep is set to ALWAYS.
Does anyone know if this is a common s3 problem or is it specific to my device, and are there any fixes?
Thank you.
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Click to collapse
Hello,try this:
dial *#0011#, press menu button then selected WIFI .
Press the off /on buttor for disable the wireless power saving.
Django8989 said:
Hello,try this:
dial *#0011#, press menu button then selected WIFI .
Press the off /on buttor for disable the wireless power saving.
Click to expand...
Click to collapse
Thank you for your reply,
I have now swtiched wifi power saving OFF.
Hopefull this will solve the issue
Still not working...
Sorry to drag this up again, but this hasnt worked for me..
Has there been another solution since??

[Q] Turn off wi-fi scanning after connection

Anyone know of a way to turn "Scanning" for wi-fi networks off after you are "Connected" to a wi-fi network thus saving battery? Turning off "Notify me" does not do it.
Larry Fortune said:
Anyone know of a way to turn "Scanning" for wi-fi networks off after you are "Connected" to a wi-fi network thus saving battery? Turning off "Notify me" does not do it.
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Click to collapse
I think it stops scanning once ur connected and leave the page..if u reopen the WiFi page it scans then stops,at least in mine it does..
Sent from my SCH-I605 using xda premium
From what I've read, this seems to be the way it works. Bottom line it will scan every 4 secs or so while you are on the settings page in case you are trying to connect to a new network, then revert to wifi.supplicant_scan_interval from build.prop when not on the settings page. It's not clear that it has much of a battery impact whatever you set it to. I leave wifi on all the time and whether I am on wifi all day or out and about on lte my battery usage for wifi is negligible.
http://forum.xda-developers.com/showpost.php?p=20250907&postcount=31

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