Database Develop

[Q] I9000 different Battery drain rate with different Routers?

I wonder if anyone else has noticed this oddity.....
I use my i9000 with three different wireless routers.
(1) Linksys WRT54G running latest DD-WRT
(2) O2 Thomson TG585-V7 (Wireless Box II)
(3) Belkin F5D7634-4A-H
I've done this testing multiple nights from midnight to 6am. No other apps running. The I9000 is fully charged by midnight.
With (Router 2) I will lose about 1% per hour overnight.
With (Router 3) I will lose about 3% per hour overnight.
But with (Router 1), I will lose (10 to 15%) per hour overnight.
All of the routers are running the same channel and default antenna power. I can't see any difference between the routers, power wise.
I am beginning to wonder if this disparity is responsible for some users having unpredictable battery drain with their Galaxys.
Has anyone come across an app that will let me log all of the wireless connection activity?

I believe that, as for 3g connection, a stronger and cleaner wifi signal reduces battery drain. If it is so it looks to me quite normal that a good quality router (cisco/linksys) gives better results than a cheap device..

I believe you may have mis-read the results. The Linksys gives the worst battery drain. Anywhere from 60 to 80% in six hours.
The O2 Thomson gives the best overall. That or I've mis-read your answer....

finally i found someone with (almost)the same problem as me!!
except i am experiencing the direct opposite - when im using the stock wrt54g my battery only drains 1-2% per hour, but when im using my main router, the dir 615, it can drain up to 10% per hour.
i did almost everything i could to reduce the battery drain with my dir 615 router but it just doesn't work! i removed the security password for the router and even changed the speed mode to wireless B + G only but still it still drains crazily! wtf?
i've searched high and low for this problem but no one else ever posted about this problem. i've even posted this issue on another forum but didn't get any solution.
the problem is my phone doesn't go to sleep ("time spent without sleeping" in battery history is always very high - like a few hours off from "time spent with screen on") whenever i am connected to my home router. BUT when i am using some other connection like one at public or at work the "time spent without sleeping" in battery history is very close to "time spent with screen on". so clearly something is preventing my phone from sleeping whenever i am at home. i just can't figure out what it is.
i posted this issue on hardwarezone as well. link is below
hxxp://forums.hardwarezone.com.sg/showthread.php?p=50910987
if anyone could help id be greatly appreciate it cuz i don't want to change my damn router just to fix this thing.
HELP! AND SORRY IF I AM HIJACKING!

My bad, I read your post too fast thinking the first drain % was about first router and so on. Still I belive connection "quality" (signal strenght & noise absence) does affect battery life.
Btw, assuming that connection configuration is the same (b/g/n, wpa, wpa2, wep or whatever), you should check somehow (even with a laptop, I think) what kind of differences the 3 router wifi signal have (in terms of S/N).

Interesting, I checked and my drain while connected to the router at home is appalling as well - I thought it was just the new firmware getting something wrong. Luckily I just got a new router so I'll try that out and see if there's any improvement.

Barkotron said:
Interesting, I checked and my drain while connected to the router at home is appalling as well - I thought it was just the new firmware getting something wrong. Luckily I just got a new router so I'll try that out and see if there's any improvement.
Click to expand...
Click to collapse
any news on the results? what are the models of the new and old routers?
Sent from my GT-I9000 using XDA App

salivaman said:
finally i found someone with (almost)the same problem as me!!
except i am experiencing the direct opposite - when im using the stock wrt54g my battery only drains 1-2% per hour, but when im using my main router, the dir 615, it can drain up to 10% per hour.
i did almost everything i could to reduce the battery drain with my dir 615 router but it just doesn't work! i removed the security password for the router and even changed the speed mode to wireless B + G only but still it still drains crazily! wtf?
Click to expand...
Click to collapse
Just a thought - the SSID isn't hidden on one of the routers, is it? I've known that to cause strange issues in other wifi situations...

Many routers, specially old ones, don't support the "power save" option that some laptops feature, in this case, probably SGS has problems when entering save mode on the routers which don't support the power saving feautre of the device.
Maybe setting your phones wifi to the never sleep policy might affect in your performance, try it out guys, I hope it helps.

hiroshige said:
Just a thought - the SSID isn't hidden on one of the routers, is it? I've known that to cause strange issues in other wifi situations...
Click to expand...
Click to collapse
SSID is not hidden on both routers.

gtluis said:
Many routers, specially old ones, don't support the "power save" option that some laptops feature, in this case, probably SGS has problems when entering save mode on the routers which don't support the power saving feautre of the device.
Maybe setting your phones wifi to the never sleep policy might affect in your performance, try it out guys, I hope it helps.
Click to expand...
Click to collapse
my results have been tested using the "never sleep" policy. i always have that turned on so that 3g won't be switched over when the screen is off.

Could be the Beacon Interval of the routers.
http://wireless-nets.blogspot.com/2008/07/beacon-interval-impacts-on-battery-life.html
http://www.technologyreview.com/printer_friendly_article.aspx?id=25651

I believe you may be onto something here. I researched Beacon Interval and DD-WRT (Router 1) and found multiple instances of people having connection, latency and speed issues with DD-WRT that were fixed by changing the Beacon Interval on the Access Point.
I will check out the Linksys router later today to see what the default Beacon Interval is set at and report back.

tc80tc80 said:
I wonder if anyone else has noticed this oddity.....
I use my i9000 with three different wireless routers.
(1) Linksys WRT54G running latest DD-WRT
(2) O2 Thomson TG585-V7 (Wireless Box II)
(3) Belkin F5D7634-4A-H
I've done this testing multiple nights from midnight to 6am. No other apps running. The I9000 is fully charged by midnight.
With (Router 2) I will lose about 1% per hour overnight.
With (Router 3) I will lose about 3% per hour overnight.
But with (Router 1), I will lose (10 to 15%) per hour overnight.
All of the routers are running the same channel and default antenna power. I can't see any difference between the routers, power wise.
I am beginning to wonder if this disparity is responsible for some users having unpredictable battery drain with their Galaxys.
Has anyone come across an app that will let me log all of the wireless connection activity?
Click to expand...
Click to collapse
Hi!
This is some interesting facts you have encountered, regarding an app to log wifi activities I would reccomend Shark together with Shark reader, not the native mode version of Shark as it doesn't work on the Galaxy. It's not an easy to use program but it should be able to tell you what goes on in the network of your device.
You are very welcome to present your findings in my YADB - Yet Another Battery Drain thread, hope it's ok that I post a link to this thread from mine.
If you or anyone else want to visit YABD, there is a link in my signature.

Although my phone is a Desire HD I need to share my experience with you guys.
I have the AirTies RT-204 router and since I started using my phone the battery life when wifi was always on had been horendous (about 5-10% per hour on idle).
However, about 5 days ago my router was restarted and my battery has been excellent from that point on (about 1% even less per hour on idle).
Last night the router has been reset again and the big battery drain has come back again.
What this tells me is that the model of a router is not the culprit for the big battery drain. It has something to do with the IP changing when restarting it. Now, I am not an expert on routers etc but I believe this seems as a logical assumption.
Could some of you having this problem try restarting your router and see if it helps? Remember that maybe it will not have an impact the first time you restart and you will have to do this multiple times.
If u have anyhting more on this please post your thoughts.
Thanks

Wifi drops out when not used ?

I am having some issues with my WiFi staying connected to my network. My NC is fully rooted with all current upgrades/tweeks. My network is very strong in my house, I have full reception bars in any room. I can connect to the network just fine and as long as I am using the Wifi on my NC the connection is solid. But if I stop web browsing and do some reading then go back to browse again, my Wifi connection on the NC is off. Or it is on but not connected. As soon as I hit connect or reconnect it is fine again.
Why would my Wifi stop like this ?? I have no problems with my LapTop and its network/Wifi connection.
Thanks for any tips or insight.

Mine does this too, after about 2-3 minutes of not surfing or stuff like that it kicks wifi off.

This is by design, to save battery life. You can install the Spare Parts app from Market to modify the WiFi Sleep Policy.

EugeneKay said:
This is by design, to save battery life. You can install the Spare Parts app from Market to modify the WiFi Sleep Policy.
Click to expand...
Click to collapse
Cheers !

Had that too, more probably a bug since they are fixing that with the 1.10 update -> http://www.barnesandnoble.com/u/noo...igLink-_-k244266-_-j12871747k244266-_-Primary
"NOOKcolor V1.0.1 improves Wi-Fi connectivity and the browser experience. "

mine didn't have this problem out of the box. i did notice this problem after applying a wifi update to allow connection to ad hoc networks (link below).
http://forum.xda-developers.com/showthread.php?t=868354

[Q] Wifi Help

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
Click to expand...
Click to collapse
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.

High battery drain on *some* WiFi networks

I'm having a strange issue with my Exhibit . I'm running CyanogenMod 11 20140714-UNOFFICIAL although I think I saw this earlier too. When I'm home on my WiFi, battery use it great. Under 2%/hour. When I'm at work on the WiFiit is pretty bad, around 6-7% per hour. If I turn off WiFi, it gets much better (maybe 3% per hour). Same thing if I forget the WiFi network at work. Sometimes in my battery use graph I can see it get flat for and hour and then get bad again -- I think this is losing the WiFi connection for a bit and then reconnecting.
Work recently moved and the results didn't change enough though my data service strength changed a lot. So I'm pretty sure it has to do with the WiFi network. Other people at work don't notice a drain when using WiFi, so I'm guessing it is a combination of the work WiFi and the phone.
The work WiFi is running tomato 1.27, which I administer. I sniffed the WiFi traffic with my laptop and saw a lot of ARP requests for 'who has address' for address not on the WiFibut on our unsecured network. So I separated that with a VLAN and that helped a bit but not a ton, and the ARP requests are much lower (maybe a ~1 / minute). Signal strength is as good or better at work than at home and at home there is way more congestion of neighbor's WiFi.
I know it isn't my phone usage as I would reboot my phone and not touch it for 3 hours and look at the battery drain at both work and at home and see these differences.
Any ideas on what makes the WiFi at work with a tomato router (vs some netgear wifi router) worse on battery than my home network. Work has maybe 7 clients connected at a time, vs probably just the phone at home. Any ideas on how to troubleshoot / debug. Packet sniffing on the WiFi didn't show anything that stood out.
Thanks!

exhibit679 said:
I'm having a strange issue with my Exhibit . I'm running CyanogenMod 11 20140714-UNOFFICIAL although I think I saw this earlier too. When I'm home on my WiFi, battery use it great. Under 2%/hour. When I'm at work on the WiFiit is pretty bad, around 6-7% per hour. If I turn off WiFi, it gets much better (maybe 3% per hour). Same thing if I forget the WiFi network at work. Sometimes in my battery use graph I can see it get flat for and hour and then get bad again -- I think this is losing the WiFi connection for a bit and then reconnecting.
Work recently moved and the results didn't change enough though my data service strength changed a lot. So I'm pretty sure it has to do with the WiFi network. Other people at work don't notice a drain when using WiFi, so I'm guessing it is a combination of the work WiFi and the phone.
The work WiFi is running tomato 1.27, which I administer. I sniffed the WiFi traffic with my laptop and saw a lot of ARP requests for 'who has address' for address not on the WiFibut on our unsecured network. So I separated that with a VLAN and that helped a bit but not a ton, and the ARP requests are much lower (maybe a ~1 / minute). Signal strength is as good or better at work than at home and at home there is way more congestion of neighbor's WiFi.
I know it isn't my phone usage as I would reboot my phone and not touch it for 3 hours and look at the battery drain at both work and at home and see these differences.
Any ideas on what makes the WiFi at work with a tomato router (vs some netgear wifi router) worse on battery than my home network. Work has maybe 7 clients connected at a time, vs probably just the phone at home. Any ideas on how to troubleshoot / debug. Packet sniffing on the WiFi didn't show anything that stood out.
Thanks!
Click to expand...
Click to collapse
try adjusting some of the settings in the wireless advance settings also make sure your wifi is using the least crowed possible channel and 1,6,and 11 can overlap without interference. easy way to find the best channels is to use an app on a laptop or smartphone with wifi.
Android Wifi Analyzer Free in app store
windows insidder 3 free
Linux LinSSID free
*NOTE too much interfernce may cause network delays which in turn force rechecking connection due to lost packets. also it after trying the above the second thing it could be is possible routers wifi is slowly going out. I've had a linksys router do that. new ping was awesome for e.g playing league of legends 81 when wifi notice her wifi connection kept droping. rebooted router and it worked fine for a a while then did it again and slowly became more frequent ping also increased to 106. replaced router with a new one and ping dropped to 73 and 0 wifi drops or slow downs. hope this helps

I'm pretty sure it isn't interference. At home there are 15 strong WiFi stations across all channels. At work, there are only 2 other WiFi stations and mine is at a channel far from them, so the X-talk from WiFi is way better at work. Also when work moved, I saw no change (although WiFi wasn't crowded at only location either) so I think it has to do with the WiFi network and not the environment.

did you test to make sure wifi isnt dropping packets either as well as check routers wifi intervals

did you test to make sure wifi isnt dropping packets either as well as check routers wifi intervals
Click to expand...
Click to collapse
How would you test if wifi is dropping packets? Just a ping on my phone? I can ping wireless consistently from my desktop, but that is over ethernet.
What do you mean by "wifi intervals"? Is that a setting I should see on my tomato firmware? "Beacon Interval" is set to 100, but I don't claim to understand that. "DTIM Interval" is set to 1.
Thanks,

exhibit679 said:
How would you test if wifi is dropping packets? Just a ping on my phone? I can ping wireless consistently from my desktop, but that is over ethernet.
What do you mean by "wifi intervals"? Is that a setting I should see on my tomato firmware? "Beacon Interval" is set to 100, but I don't claim to understand that. "DTIM Interval" is set to 1.
Thanks,
Click to expand...
Click to collapse
yes that is correct for wifi intervals in the tomato firmware. look at This for better info for what each setting is for. the 3 main ones i would be adjusting as needed is Beacon Interval , Fragmentation Threshold and Interference Mitigation.To test pack loss anything thats on wifi and can ping router. So yeah your phone will work. just make sure you ping the routers ip address e.g for linksys 192.168.1.1

I haven't changed any of the wireless settings yet, but I do have more data. My phone sometimes is on the wifi and has normal (low) battery usage. Today from 9:30 - 12:30 it was great, but after 12:30 there was a discontinuity in the battery vs time graph as the slope decreased by over a factor of 3. Not sure what changed -- I don't see different devices on the wireless or higher wireless utilization. I'm thinking something in the wifi trips a setting or something on the wifi isn't completing on the phone and is draining the battery.

[Q]Suddenly losing WIFI connection when phone is idle

Hello.
I am using my I9000 for a good while now and i am running cm11-20150901-SNAPSHOT-XNG3CAO3G0-galaxysmtd. Everything was running fine so far, but suddenly for some days now, the WIFI connection somehow gets lost when it's idle.
When this happens (and i don't know on what timeframe it does) and i activate the phone (pressing the home button) the WIFI symbol is either shown and then disappears or is already gone - but then after some seconds comes back and WIFI is on again.
Yes, i do have the setting for standby WIFI on always, so this should not happen.
Does anyone have an idea what could be the problem here?
Also i do have a fritz.box 7390 which supports a 5GHZ network - does the I9000 support a 5GHZ wifi? Maybe it's the router that's causing the issue an switching to the 5GHZ might fix it - but so far i could not see the network when it's on 5GHZ.. So i guess it's not supported but thought i might ask anyways...
Thanks!