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hae helpers
my wifi works fine..it connects to my network..bt after its connected it keeps on scanning for other networks..which is unnecessary sinces its already connected to my network..n also its s battery eater..is there a way i can stop it from scanning for other network since its connected to my network??..thx
sumeetp said:
hae helpers
my wifi works fine..it connects to my network..bt after its connected it keeps on scanning for other networks..which is unnecessary sinces its already connected to my network..n also its s battery eater..is there a way i can stop it from scanning for other network since its connected to my network??..thx
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It sounds odd- how can your wireless scan when its already connected. Does your wifi status say - connected?
Either install superpower app from the market. It will make sure that your wifi doesnt drain your battery or you can install OCLF 2.0 from market and tweak the wifi settings to ensure longer battery life.
It does not scan when connected to a wifi, only when you open the wifi settings page, so it can present you with an updated list.
Concerning: possible reasons are low signal strength or a rom variant which uses a lot of power, JPY for example. One solution is to exchange with other wifi driver. Some custom roms offer less powerhungry wifi.
Sent from my GT-I9000 using Tapatalk
Settings wifi scanning off when screen off or similar .
jje
I read on the Darky's ROM thread that this is normal android behaviour but yes it seams weird to me too.
I live in an area with poor mobile signal and consequently use a Vodafone Suresignal box. This creates a a micro cell that allows my mobile to recieve a good signal. As you know these boxes rely on a broad band connection to make things work.
What this means is that the distance to the Suresignal box and the broadband modem differs by about 6 inches. For this reason I am perplexed at the significant difference in battery drain with and without WiFi on.
My phone is a Samsung Galaxy S using onecosmics release 4.2 of ICS with the devils 14.2 rom.
If WiFi is swithced off then I get about 8-12 hours of battery life in idle. I.e. the phone is connecting with the Suresignal box by 3G.
If I switch WiFi on then I get over 2 days of battery life with the phone in idle.
I have tested this several times and the result is consistent.
Why would this be the case? I would have expected that WiFI would have been the battery burner not vice versa.
Does this observation help anyone? Is there a techincal explanation for the above observation?
My cell phone with Team ICSSGS RC 4.2 behaves that way too. Is it normal that wifi is more economical than 3g?
ROM: Team ICSSGS RC 4.2
Kernel: Semaphore ICS 0.8.1
Modem: JVU
I believe wifi is a little less battery hungry than UMTS. I always keep an eye between the two whenever I change roms (Stock/CM7/MIUI/ICS) as I am a heavy data consumer. Also note that Wifi policy may have been set to turn off when the phone is idle, or never. If former, it will turn wifi on if your screen is on and will essentially not putting wifi to sleep and loose connectivity.
Here's how I scale the consumption, with topmost is the least battery hungry
1. E (edge data connection)
2. Wifi
3. 3G (UMTS/WCDMA data)
4. H (HSDPA/HSUPA)
JVU the modem is very heavy in battery, the modem JPY is less greedy. It depends on the modem. But 3G or HSDPA will always be more hungry than the wifi.
Indeed, WLAN is less consuming than 3g.
As a suggestion, when you are not using WLAN or you are not in range of it, you may switch to 2g connection ( Edge ). Although it's loading way more slower than 3g, if you use it mainly for emails and not for browsing, you will not see any difference at all.
slaycock said:
If WiFi is swithced off then I get about 8-12 hours of battery life in idle. I.e. the phone is connecting with the Suresignal box by 3G.
If I switch WiFi on then I get over 2 days of battery life with the phone in idle.
I have tested this several times and the result is consistent.
Click to expand...
Click to collapse
I have the same results
offcourse 3G has more battery drain
Wifi is better on battery than 3g, if you are connected to 3G and not using Wifi Turn off the Wifi, because your phone keeps looking for a wifi signal and that drains battery faster. But if you are in a wifi range always use Wifi over 3g.
i had DesireHD i9000 i9001 in my hands to play with ... 3g is always the biggest consumption regarding internet connection.
Hi!
A few weeks ago I flashed CM9, since then I experience an enormous battery drain when I'm connected to the wifi of my university ("eduroam").
The "Android OS" process then consumes a lot more ressources than usual. At my home wifi everything is normal.
And when I turn off wifi at the college and use normal mobile network, everything is also fine.
Pictures:
s14.directupload.net/images/120513/erjgvknk.png
s14.directupload.net/images/120513/mau8hlfo.png
What I tried to fix it:
-flash different modems
-turn off location via wifi
-use different "EAP-Method" (TTLS and PEAP are supported by the college network)
I would be very happy if someone could help me!
Thanks in advance.
modems are not related to wifi... consider instead a different kernel..
I'm having the same problem, but on an i9100 device. Have observed this problem using different roms/kernels, all with similar result.
It seems the problem is not related to roms/kernels. When I'm using my home wi-fi network, their is no battery drains at all. The drain only happens when I'm connected to "eduroam" access point.
Monitored using BetterBatteryState, find long wakelock time for "wlan-rx-wake".
Now I just disable wifi when I'm not using it in an eduroam area.
Problem confirmed.
For me it's even worse. As soon as I add eduroam to my list of wifi access points, the drain is at 60-70 mA even on my home network.
Could this be related to the encryption or access control of eduroam? "Normal" wifi networks use wpa or whatever but not this weird PEAP or EAP, etc.
I have the same problem. Some networks drain the battery really fast, while battery drain at other Wi-Fi networks is normal...
Hello !!
I've CM 10.1 (4.2) but WIFI shutdown when i turn off screen. I've deactivate "Always Suspension WIFI" and activate "Never Suspension Wifi" but it's same...turn off wifi
can you help me if has solution?
thanks to all !!
Perhaps you have an application such as juice defender that disables wifi when the screen is off, or another app that performs similiar functions. If not, try applying that setting through an application called Wifi Fixer from the play store. It fixed all my wifi problems. It basically checks your wifi connection when the screen is off and fixes any problems it encounters, with very minimal impact on battery life. Hope I helped, and good luck.
Sent from my Optimus 2X using xda app-developers app
Hi everyone
I have a profile that that kicks in every 30 mins from 8 am to 9pm, to sync my account. I have set it up to use wifi first, but if there is no wifi connection it will go to my mobile data instead.
Now here is the problem if my phone is on standby it always connects via mobile data regardless of a wifi connection is available. But if I am using my device at the time when the task runs then it will connect to wifi. I have checked my, keep wif on in sleep option and it is set to always.
Could anyone explain as to what this is happening?
Thanks in advance
What is your Android version?
I am currently using a custom rom called exodus which is currently based on marshmallow.
Check if Tasker is excludied from Battery Optimization and whether Wi-Fi is not deactivated while the phone is in sleep mode in Settings/Wi-Fi/Advanced/Keep Wi-Fi on during sleep.
yep tasker is excluded from battery optimisation and the allow wifi during sleep policy is always.
If you're turning wifi on with tasker action wifi turn on, try instead of that shell script "svc wifi enable".
Ok thanks, I will let you know the out come of this. I was using secure settings to enable Wifi as the command built in tasker, is not compatible from kitkat and onwards if I remember correctly.
I found out "svc wifi enable" command does exactly the same thing
Discovered I'm having the very same problem on cm13 and the batch jobs have been done by initialized mobile data. Finally found out a solution to initialize wifi instead of mobile data. I've no limited data plan, but wifi is more battery friendly.
taisto said:
Discovered I'm having the very same problem on cm13 and the batch jobs have been done by initialized mobile data. Finally found out a solution to initialize wifi instead of mobile data. I've no limited data plan, but wifi is more battery friendly.
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Care to share the solution?
After all this is a community that people use to, find solutions to problems and to get the most out of their device. Which also help others who experience the issue for future reference.
Does anyone else know a solution to this?
HatchetEgg said:
Does anyone else know a solution to this?
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Do you actually wait for wifi to connect?
Does your phone do the low power screen off wifi thingy?
rignfool said:
Do you actually wait for wifi to connect?
Does your phone do the low power screen off wifi thingy?
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Click to collapse
Yes under normal circumstances it takes about 20 seconds to connect.
No because for some reason my wifi will only switch on if the screen is on.
I also have uninstaled my custom kernel, but this issue still appears from time to time.
There's a setting in wifi connection settings that you can set to that says "keep Wi-Fi on during sleep"
This same setting is often repeated in battery apps like powernap, naptime, better battery saver etc.
Even though the wording is the same, I don't believe they are all touching the same setting so go find those apps if you have them installed.
Also, disable all native battery savers (including Samsung 2 or 3 different ones,, doze, battery optimization etc etc just to see if your problem goes away.... Which it will. At least you'll know though
I have the same problem with Wi-Fi connection.
I have a profile to turn Wi-Fi on and try to connect when certain conditions meet and the screen is off in that case.
It seems that the phone has difficulties turning Wi-Fi on and connecting to it when screen is off. Tasker does manage to turn Wi-Fi on but the phone somehow does not connect *reliably* in all cases.
Tasker is excluded from battery optimization, Wi-Fi on during sleep. I tried turning cpu on for a short time hoping that it will connect, but still no result.
The only possible solution might be turning the screen on briefly at that moment.
If anybody has a better idea, you are more than welcome to share!
alienyd said:
I have the same problem with Wi-Fi connection.
I have a profile to turn Wi-Fi on and try to connect when certain conditions meet and the screen is off in that case.
It seems that the phone has difficulties turning Wi-Fi on and connecting to it when screen is off. Tasker does manage to turn Wi-Fi on but the phone somehow does not connect *reliably* in all cases.
Tasker is excluded from battery optimization, Wi-Fi on during sleep. I tried turning cpu on for a short time hoping that it will connect, but still no result.
The only possible solution might be turning the screen on briefly at that moment.
If anybody has a better idea, you are more than welcome to share!
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I can certainly say that turning the screen on will enable wifi, as I have resulted to this as well. But unfortunately I do not know any other solutions to try.
loogielv said:
There's a setting in wifi connection settings that you can set to that says "keep Wi-Fi on during sleep"
This same setting is often repeated in battery apps like powernap, naptime, better battery saver etc.
Even though the wording is the same, I don't believe they are all touching the same setting so go find those apps if you have them installed.
Also, disable all native battery savers (including Samsung 2 or 3 different ones,, doze, battery optimization etc etc just to see if your problem goes away.... Which it will. At least you'll know though
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Click to collapse
My Wifi is set to always "keep wifi on during sleep"
I'm going to resort to flashing stock rom again and see if that helps. As I am only using doze and amplify to save battery, all settings for that has been adjusted to the guide I found.
HatchetEgg said:
My Wifi is set to always "keep wifi on during sleep"
I'm going to resort to flashing stock rom again and see if that helps. As I am only using doze and amplify to save battery, all settings for that has been adjusted to the guide I found.
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Click to collapse
Before reflash, just disable xposed and see what you get... I will bet half of this soft taco I'm eating your problem disappears with greenify and or amplify. I'm not saying don't use them at all... Just make sure it works without them. I used to have some serious battery apps, but found after disabling, my battery was IMMENSELY better. And I had no config to deal with. But first things first... IT'S without a doubt, no question, a battery app setting or a system app that's being put to sleep that should be white listed