hej guys,
i have a problem regarding my i9305. when the battery is charged to 100% and i have wifi enabled and the phone is connected to my wifi router, i have the impression that the wifi anyway is scanning all the time for new networks. within two hours my battery is at ~85% with normal (almost no) usage.
when wifi is disabled - same usage as before - i am at 94% after 5 hours!
so is there a possibility to stop the i9305 from wifi scanning when it is already connected to a wifi? or is there any other issue why the wifi drains the battery that quick?
cheers
WiFi settings Advanced check setup
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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.
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...
I usually turn of my mobile data, and connect to just wifi when there a network available.
What consumes more battery? If speed is not an issue.
Thanks
Sent from my GT-N7000 using XDA
I had a Samsung Epic 4G (the first line of Galaxy S) and on that, wifi consumed less battery than data, but on the Note, I am experience the opposite.
I find that wifi drains my battery faster.
If I disable wifi and am connected to 3G, the battery lasts longer.
If you use wifi to surf net, battery time will last longer. If you use data mobile like Hspa, you can see the battery drain very fast. (6 months of monitor with this)
Sent from my GT-N7000 using XDA
WIFI always use less battery the radio doesnt have to do much work since the router is within a close range.... mobile radio does much more work and consume mote battery than wifi...
Wifi power usage depending of type of wifi (2.4G or 5G), router settings and signal.
2.4G is less then 5G type. This is because more power will need for higher freq.
Router setting will give impact on your connected device to your router. Go to the wifi advance router setting and set optimal for speed and less power usage wifi setting such as Beacon Interval, RTS/CTS Threshold,Fragmentation Threshold, DTIM. And last great signal great battery life.
Hello. Does anyone knows how to make a script for tasker which switch mobile data off if WiFi is connected and mobile data back on if there's no WiFi connection? For the last 3 or 4 hours I'm searching for this and can't find nothing.
Also, I want if there's no WiFi network, to switch WiFi off (so mobile data will be turned on).
I managed to do something, but it didn't worked. When I enabled the profiles with WiFi and mobile data both turned on, the mobile data turned off, then WiFi off, then mobile data on and so on, in a loop.
Wouldn't that be redundant? The os already does that.
Sent from my Nexus 7 using Tapatalk
Thanks for the response. I know that if WiFi is connected, I'm using the internet from it, but mobile data is still active, right? Even if there's no traffic from mobile data, that's still on. Wouldn't that be a source of battery drain?
I set my data to turn off if my phone is connected for 5 minutes to a wifi. Important: set collision handling to 'abort existing task'.
Here you got pictures.
Edit:
if you are further interested in battery savings, you can read my thread "[BATTERY LIFE] How to get up to 7+h of screen-on-time"
This is absolutely redundant and unnecesary, when the phone connects to a wifi, it disables 3g/LTE data connection by itself. When you connect to a wifi you can see how the 3g/H/H+ icon above radio signal dissapears. The radio chip inside this phones can be used in Wifi mode or 3g/4g mode for data connection, but not both at a time. It is technically not possible.
Accidentally sent from my Xperia Z using Tapatalk
RoberM said:
This is absolutely redundant and unnecesary, when the phone connects to a wifi, it disables 3g/LTE data connection by itself. When you connect to a wifi you can see how the 3g/H/H+ icon above radio signal dissapears. The radio chip inside this phones can be used in Wifi mode or 3g/4g mode for data connection, but not both at a time. It is technically not possible.
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Click to collapse
The moment you don't have wifi anylonger, the phone starts a fullburst search for wifi and 3G/4G networks (even if I don't want wifi/data at the moment). and this drains a hell of a lot of battery. then (if you go out e.g.) it finds a 3g/4g-connection which it tries to keep up (drains a lot battery) and in the same time searches for wifi-networks (also drains battery)... very inefficient use of battery
So I deactivate data after 5 mins automatically via tasker and turn it on manually when I need it (could also automate that, but I'm lazy). This way I circumvent all these battery drains
Additionally:
Under normal circumstances I'd also set wifi to "turn off if not connected" (in settings) and "optimize wifi for battery life", but I use a custom stock kernel that has issues with these settings so I need to leave wifi on all day
sea2605 said:
The moment you don't have wifi anylonger, the phone starts a fullburst search for wifi and 3G/4G networks (even if I don't want wifi/data at the moment). and this drains a hell of a lot of battery. then (if you go out e.g.) it finds a 3g/4g-connection which it tries to keep up (drains a lot battery) and in the same time searches for wifi-networks (also drains battery)... very inefficient use of battery
So I deactivate data after 5 mins automatically via tasker and turn it on manually when I need it (could also automate that, but I'm lazy). This way I circumvent all these battery drains
Additionally:
Under normal circumstances I'd also set wifi to "turn off if not connected" (in settings) and "optimize wifi for battery life", but I use a custom stock kernel that has issues with these settings so I need to leave wifi on all day
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Click to collapse
Umm, ok... But this has nothing to do with what the OP asked, or what I said.
You may try e-robot from play store.
I have a command for that, after wifi disconnects, wait for 30 sec. If still wifi is not connected, automaticcaly disables wifi.
Same as for bluetooth. When i leave my phone in my desk and gone for a while, 60 sec later disable bt.
You can do what ever you want.
Sent from my C6603 using Tapatalk
My HTC One stopped connecting to wifi on February 21(as my wifi usage shows) and today it stopped connecting to the data network after I put it on sleep mode after around 2hrs of usage for internet browsing. How can I fix this?