Database Develop

Is there an App to switch to 2G when Idle/sleeping?

hi,
i was wondering if there is an app which will automatically switch from 3G to 2G when i turn of the display. When the phone is in my pocket there is no need for the 3G eating my battery.

that would be an amzing app BUMP BUM BUMP

It indeed would be. I'm on it.
EDIT: Then again, switching from 3G to EDGE and vice-versa is resource/battery heavy in heavy and will probably leave you without network for a while. I'm actually going to say it's not worth it. If I create it, I'll post an initial version up here for you guys to decide (no 3G frequencies for me).
Edit: it seems as though there's nothing in the api about switching network state. Looks like a root app (if it's even possible) would be required..
Edit2: This is probably impractical. For example, if you answered a call, you would be disconnected from the call immediately. Besides, the G1 is rated as having more sleep battery life under 3G than GSM.

How does being on 3g even waste battery when your on idle? what Syncing with gmail? i would think the constant switching would waste more battery

I guess you could do it with Tasker. I got that app in ADC2 and it's amazing what you can do with it.

I guess it would be very impractical if you would get disconnected everytime you answer a call from a sleep state. I havent compared the battery consumtion between 3G and "g yet, but i imagine you could save quite some. m not only talking about the Synching, but mainly Chat clients which run in the background. There is no need for them to run over 3G.

3g vs 2G battery life - way too varied

I have a ATT type Nexus One (not Tmobile), unrooted, with latest froyo.
The life of the battery in 3G mode vs. 2 G mode is astonishing...pretty ridiculous.
I'm searching but can someone tell me if there's been any fixes or advancements in regard to this problem?
When at home I use wifi as much as possible. I leave it on 2G but really, I can't take the slow speeds of 2G, but 3G setting is suuuuuuch a drain on the battery that it seems unreal.
i've had nokia's and more in 3G, my wifes iphone is 3G... and all of them had nearly more than double the battery life.
I hate the voice quality of 2G, I'd love to be able to just leave at 3G, but it's merely hours before it's nearly drained set on 3G. it's got to be a problem (and one that hopefully can be fixed).
Why would 3G setting be sucking THAT much power (decent-strong signals too here)?
Love my nexus1 and I'll live I guess but this problem...it's a bit much.
Any news on this issue, or other things I can consider or change/try to help this? (3G)
thanks

Set your WiFi sleep policy to NEVER. Even thought you're using WiFi at home, whe nthe screen goes off the WiFi shut off and 3G kick in.
Menu>Settings>WiFi settings>Menu>Advance>WiFi sleep policy>Never.

baseballfanz said:
Set your WiFi sleep policy to NEVER. Even thought you're using WiFi at home, whe nthe screen goes off the WiFi shut off and 3G kick in.
Menu>Settings>WiFi settings>Menu>Advance>WiFi sleep policy>Never.
Click to expand...
Click to collapse
Oh very sorry, I should have said I did set this to never and saved changes.
In fact, I think I've set it 1000x now btw, over some time it STILL always disconnects from wifi (might be router disconnecting though, perhaps I should set an IP manually to solve this??).
GPS and BT are always turned off until needed as well (used very rarely anyways btw).
But when I'm away from home for example, I turn wifi off and test the difference2G vs. 3G and the difference is waaaaay too much, 3G just CHEWS at the battery no matter strong signal or medium.
I find it hard to believe 3G really has to eat up that much battery when set compared to 2G on a Nexus. A little bit to nominal ...sure, but not like this (say like 4-6 hours if i left it 3G for a day with little usage).
What's really happening here? Nothing from google/HTC on this matter?

Heh, i get just the opposite... out in the farmland of west toledo, im getting 2G but typically GPRS and that rapes my battery where as 3G i could go on standby for days if i didnt touch it...
What radio are you running? if your phone is constantly looking for a signal then that may be your problem...

I have the same issue on 3g. Home on WiFi is ok but when I go out during the day on 3g it just kills my battery.
The reason is because android OS keeps the data session open at all times where other OS's close it down when not in use. It's just the nature of how they designed android.
As a test, one day turn off your data connection but stay on 3g and see how good your battery life is. This is how some other OS's work normally.
It's a trade off we have to make for being always connected on android.
For example voice actions need to reach out to Google's servers to work. So in the interest of speed of having to open the data session each time, the OS just keeps data open on hand at all times. But that kills battery quicker.
That's what I've found anyway.

JHaste said:
Heh, i get just the opposite... out in the farmland of west toledo, im getting 2G but typically GPRS and that rapes my battery where as 3G i could go on standby for days if i didnt touch it...
What radio are you running? if your phone is constantly looking for a signal then that may be your problem...
Click to expand...
Click to collapse
That's because the phone is always on the lookout for a 3G signal, if you know you aren't going to get one, just set it to 2G only and your battery life will massively improve.

[Q] Custom ROM's weaken wifi reception?

On the stock 4.1.1 rom i could reach wifi from my modem at about 60 feet or even more. I could stand at the farthest point in my house and still get 2 out of 4 bars on wifi. I loaded slimkat and although it was a good rom it lagged to much, and now im on the latest cm11 nightly, but both roms gave poor wifi performance, i could barely reach it from 20 feet. It would connect but i couldn't really use the internet cause the signal was so bad.
Anyone else have this problem? I have a 2wire modem if anyone is wondering.

russian392 said:
On the stock 4.1.1 rom i could reach wifi from my modem at about 60 feet or even more. I could stand at the farthest point in my house and still get 2 out of 4 bars on wifi. I loaded slimkat and although it was a good rom it lagged to much, and now im on the latest cm11 nightly, but both roms gave poor wifi performance, i could barely reach it from 20 feet. It would connect but i couldn't really use the internet cause the signal was so bad.
Anyone else have this problem? I have a 2wire modem if anyone is wondering.
Click to expand...
Click to collapse
bump

I have been having issues with Wi-Fi, but it's my provider fault. So no, no issues so far. I'm on a Carbon ROM nightly. BTW, you don't need to "bump".

What frequency does your router use? 2.4 or 5 ghz? And how many walls is it going through? Mine uses both and I get good reception up till my fence line, about 40ft away from the router behind a brick wall and some windows, using 2.4 whereas 5 will barely make it out of the house. I have a Western Digital router, not sure of the model number, but it was a cheapo from Walmart.
That said, wifi has been strange with custom roms on 4.4 with some people. For some of us it seems to be just fine where others have poor or no signal. The following is speculation based on what I've noticed lately --- Makes me wonder if some phones have revision B of the wifi chip when development team is using A, or something like that. The RAZR HD was having similar issues caused by different chipset revisions when KitKat first came out and maybe we're having the same. --- End speculation.

skeevydude said:
What frequency does your router use? 2.4 or 5 ghz? And how many walls is it going through? Mine uses both and I get good reception up till my fence line, about 40ft away from the router behind a brick wall and some windows, using 2.4 whereas 5 will barely make it out of the house. I have a Western Digital router, not sure of the model number, but it was a cheapo from Walmart.
That said, wifi has been strange with custom roms on 4.4 with some people. For some of us it seems to be just fine where others have poor or no signal. The following is speculation based on what I've noticed lately --- Makes me wonder if some phones have revision B of the wifi chip when development team is using A, or something like that. The RAZR HD was having similar issues caused by different chipset revisions when KitKat first came out and maybe we're having the same. --- End speculation.
Click to expand...
Click to collapse
I understand there maybe many factors why the signal is weak, but its the fact that after i changed the rom the reception became worse.
Im using a 2.4 GHz i think. Mine has to go through a floor because its in the basment and from the floor goes through 2 walls to get to my room where before i flashed kit kat i got 2 bars just fine and could use the internet and now it doesn't even get signal. Before flashing kit kat i could get 2 bars in my sisters room (floor and around 3 walls and furniture around 50 feet away). Its a big house so...but its never been this bad even with my old phone! which is an lg optimus one.

after doing extensive research on the kit kat update, turns out this is a location services/wifi chip conflict and this pretty much renders the wifi chip useless. so unless your router is strong (and mine isnt) you wont get good wifi connection anywhere.
One way to sort of fix it is to do the following.
1. Go to Settings>Location Services> Device only (basically so it would not use the wifi and this would free up some bandwidth for your phone).
2. Go to Settings>Wifi>Advanced>Turn the Eco mode/ Battery saver mode OFF
This will increase performance of the wifi chip and stop google from using up your wifi to track you (lol)
This also seems to drastically increase battery performance, I loose about 1 percent every 5 minutes with screen off. Right now i am at 78% and not going down at all while my screen is on. So...i guess the battery saver thing drains battery??? (idk maybe a cm bug).
Hope this helps anyone who has this problem on kit kat. By the way turning off location services does 2 bad things, renders certain apps useless and 2, does not help wifi (idk why).
EDIT
Its been around 10 minutes and battery isn't going down

russian392 said:
after doing extensive research on the kit kat update, turns out this is a location services/wifi chip conflict and this pretty much renders the wifi chip useless. so unless your router is strong (and mine isnt) you wont get good wifi connection anywhere.
One way to sort of fix it is to do the following.
1. Go to Settings>Location Services> Device only (basically so it would not use the wifi and this would free up some bandwidth for your phone).
2. Go to Settings>Wifi>Advanced>Turn the Eco mode/ Battery saver mode OFF
This will increase performance of the wifi chip and stop google from using up your wifi to track you (lol)
This also seems to drastically increase battery performance, I loose about 1 percent every 5 minutes with screen off. Right now i am at 78% and not going down at all while my screen is on. So...i guess the battery saver thing drains battery??? (idk maybe a cm bug).
Hope this helps anyone who has this problem on kit kat. By the way turning off location services does 2 bad things, renders certain apps useless and 2, does not help wifi (idk why).
EDIT
Its been around 10 minutes and battery isn't going down
Click to expand...
Click to collapse
I don't see the Eco Mode, maybe is just a feature of the ROM you are using? I see Wi-Fi optimization (minimize battery usage when Wi-Fi is on), is that it?

Yea that is the one he is referring to. Btw, I personally don't have WiFi issues on my roms, go back to stock if you get a chance and see if the wifi is still failing, it may just be that 2-Wire.

russian392 said:
after doing extensive research on the kit kat update, turns out this is a location services/wifi chip conflict and this pretty much renders the wifi chip useless. so unless your router is strong (and mine isnt) you wont get good wifi connection anywhere.
One way to sort of fix it is to do the following.
1. Go to Settings>Location Services> Device only (basically so it would not use the wifi and this would free up some bandwidth for your phone).
2. Go to Settings>Wifi>Advanced>Turn the Eco mode/ Battery saver mode OFF
This will increase performance of the wifi chip and stop google from using up your wifi to track you (lol)
This also seems to drastically increase battery performance, I loose about 1 percent every 5 minutes with screen off. Right now i am at 78% and not going down at all while my screen is on. So...i guess the battery saver thing drains battery??? (idk maybe a cm bug).
Hope this helps anyone who has this problem on kit kat. By the way turning off location services does 2 bad things, renders certain apps useless and 2, does not help wifi (idk why).
EDIT
Its been around 10 minutes and battery isn't going down
Click to expand...
Click to collapse
Hmmm. I'm already doing #1, haven't bothered taking a #2, I mean trying #2 ever....My wifi is set to go on and off with the screen and I only connect to trusted networks, for me, there never has been reason to use #1 between paranoia and wanting to save battery life.
Good finds, it'll be worth watching logs when those settings are enable/disabled to see if any errors pop up.
---------- Post added at 08:46 AM ---------- Previous post was at 08:46 AM ----------
Silentwidow said:
Yea that is the one he is referring to. Btw, I personally don't have WiFi issues on my roms, go back to stock if you get a chance and see if the wifi is still failing, it may just be that 2-Wire.
Click to expand...
Click to collapse
He did go to stock and it worked just fine -- in the OP....errr, at least said that it works with stock just fine.

skeevydude said:
Hmmm. I'm already doing #1, haven't bothered taking a #2, I mean trying #2 ever....My wifi is set to go on and off with the screen and I only connect to trusted networks, for me, there never has been reason to use #1 between paranoia and wanting to save battery life.
Good finds, it'll be worth watching logs when those settings are enable/disabled to see if any errors pop up.
---------- Post added at 08:46 AM ---------- Previous post was at 08:46 AM ----------
He did go to stock and it worked just fine -- in the OP....errr, at least said that it works with stock just fine.
Click to expand...
Click to collapse
Yes i did go back to stock to check if it was the phone or the rom. It is the kit kat os...many other devices are reporting this problem.
Also noticed a CM bug, the camera has a hard time saving video over 10 seconds long and also the google play music app reboots the device for some reason...anyone else with this?
For now i am getting close to usual wifi after changing my settings around although it is still only 60-70% as strong as it should be :/

mauchito said:
I don't see the Eco Mode, maybe is just a feature of the ROM you are using? I see Wi-Fi optimization (minimize battery usage when Wi-Fi is on), is that it?
Click to expand...
Click to collapse
Yes that is what it is...i just called it eco mode but yes it is the wifi optimization thingy

I flashed the pa moto ROM and with the WiFi, I had great signal, it just would not connect. To any router at all. It would sit at saved and never attempt to connect.
Sent from my MB886 using xda app-developers app

tork0112 said:
I flashed the pa moto ROM and with the WiFi, I had great signal, it just would not connect. To any router at all. It would sit at saved and never attempt to connect.
Sent from my MB886 using xda app-developers app
Click to expand...
Click to collapse
sometimes i get that too on CM. It wont connect to wifi till i literally come right up to the modem, otherwise if im walking around the house it wont even see the signal (if im moving around). I have to stop, stand there for like 2 minutes till it finds the signal. Usually if its 1-2 bars of wifi it wont even bother to try to connect.
This is a huge kit kat bug.

I always have had problems with WiFi, even on stock (because of a 3rd world internet provider).. But I can't download anything con google play... I download at 10kbps per second, but downloading from other apps or browser Its decent like 2-3mb/s. How can I fix this?

Arjomer said:
I always have had problems with WiFi, even on stock (because of a 3rd world internet provider).. But I can't download anything con google play... I download at 10kbps per second, but downloading from other apps or browser Its decent like 2-3mb/s. How can I fix this?
Click to expand...
Click to collapse
now that i dont know.
My problem isn't internet speed. Even here in the USA i get 70kbps internet because to get anything more than that i need to pay 2 or 3 times more and i already pay 30 bucks a month for 70kb. But the problem is the signal, i cant get signal in my bedroom on kit kat rom, but i can on stock.
your problem? i really dont know, try clearing data on the play store, rebooting the phone and trying again. its probably a play store issue

Yeah.. I hope we could get a decent wifi reception on kk. And I already done that, Should I flash other gapps?
Sent from my ATRIX HD using XDA Premium 4 mobile app

I flashed the Pac Man 4.4.2 ROM on my kids Atrix HD, and that was the first thing I noticed. I was doing the work at my desk, which is located about 5' (with a typical wall in between) from my AT&T (Motorola) wireless router. Prior to that; I got full bars on the Wi-Fi signal strength meter anywhere within a 50-60-' radius. After I did the upgrade from Pac Man 4.3; sitting at my desk, 5' away from the router; I was only getting 3 bars - which - still works, but is a significant degradation in Wi-Fi performance. Sitting at the same desk, or anywhere on my property with either my Samsung S4 or Note 3, I have full bars, and full speed. Both of my Sammy's are running the stock AT&T KK update, unrooted - but living for the day that an exploit becomes available.
In fact; when I turn the corner onto my street (my house is the second house) my Sammy's connect to my router before I reach my driveway. Now, bear in mind; I have the power of my router turned up to a full 10. The router is located inside my bedroom closet near the ceiling, with no external antennas. I have it bridged to a dual band D-Link router for 5GHz with the 2GHz disabled. I carefully used a spectrum analyzer / logger to sweep the area for the best channels, as well. All that being said; I don't think much of that is relevant to the decreased Wi-Fi- performance of the Atrix HD, since it worked similarly to the Sammy's before the 4.4.2 bump.

nukesnooper said:
I flashed the Pac Man 4.4.2 ROM on my kids Atrix HD, and that was the first thing I noticed. I was doing the work at my desk, which is located about 5' (with a typical wall in between) from my AT&T (Motorola) wireless router. Prior to that; I got full bars on the Wi-Fi signal strength meter anywhere within a 50-60-' radius. After I did the upgrade from Pac Man 4.3; sitting at my desk, 5' away from the router; I was only getting 3 bars - which - still works, but is a significant degradation in Wi-Fi performance. Sitting at the same desk, or anywhere on my property with either my Samsung S4 or Note 3, I have full bars, and full speed. Both of my Sammy's are running the stock AT&T KK update, unrooted - but living for the day that an exploit becomes available.
In fact; when I turn the corner onto my street (my house is the second house) my Sammy's connect to my router before I reach my driveway. Now, bear in mind; I have the power of my router turned up to a full 10. The router is located inside my bedroom closet near the ceiling, with no external antennas. I have it bridged to a dual band D-Link router for 5GHz with the 2GHz disabled. I carefully used a spectrum analyzer / logger to sweep the area for the best channels, as well. All that being said; I don't think much of that is relevant to the decreased Wi-Fi- performance of the Atrix HD, since it worked similarly to the Sammy's before the 4.4.2 bump.
Click to expand...
Click to collapse
I'm also on at&t except with a 2wire router. I had to move the router around to get slightly better signal. But still. I would sit in my friends house and I could use his parents houses WiFi (on the same property) and get 2 bars. Now its none.
Sent from my MB886 using XDA Premium 4 mobile app

russian392 said:
I'm also on at&t except with a 2wire router. I had to move the router around to get slightly better signal. But still. I would sit in my friends house and I could use his parents houses WiFi (on the same property) and get 2 bars. Now its none.
Sent from my MB886 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I had a 2Wire until last summer and it was a pretty decent router with decent coverage. I modified it by adding two external antennas and only made a slight difference. that was before rooting, tweaking, etc. The Motorola router is much better with respect to signal coverage - without any modifications.
The issue that I'm having, now is that I'm experiencing significantly less Wi Fi performance with the Atrix HD after I did the operating system upgrade. The other two stock phones are still working as well, or better than expected after the 4.4.2 update.

nukesnooper said:
I had a 2Wire until last summer and it was a pretty decent router with decent coverage. I modified it by adding two external antennas and only made a slight difference. that was before rooting, tweaking, etc. The Motorola router is much better with respect to signal coverage - without any modifications.
The issue that I'm having, now is that I'm experiencing significantly less Wi Fi performance with the Atrix HD after I did the operating system upgrade. The other two stock phones are still working as well, or better than expected after the 4.4.2 update.
Click to expand...
Click to collapse
Are you using official 4.4?
Sent from my MB886 using XDA Premium 4 mobile app

Wifi Calling & Battery

Let's settle this once and for all because No one has any clear indication not even T-Mobile
Does WiFi calling use more battery (to even have it enabled) vs it not being enabled?

I would say YES. Because if you're Wifi Calling icon is showing, your WiFi is enabled. So yes, it would be using more battery. Does it mean you're day is cut in half? Most likely not.

In my experience, using WiFi uses significantly less battery than LTE. The science behind it is that the WLAN radio has significantly lower output power than the cellular modem and therefore uses less battery. My real world experience is this:
I text frequently, check FB and IG, receive push mail from 3 Exchange accounts, and spend an average of 20 minutes on the phone each work day. I do not have a desk phone or home phone.
WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining
WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.
WiFi off (usually only happens when travelling): I usually arrive back at the hotel with 20-35%, which means I need to charge before I leave the hotel for dinner.

madmike23 said:
I would say YES. Because if you're Wifi Calling icon is showing, your WiFi is enabled. So yes, it would be using more battery. Does it mean you're day is cut in half? Most likely not.
Click to expand...
Click to collapse
i keep hearing this misnomer that wifi uses more battery, if you have it on searching and not connecting i can see how, but if you are connected to a good wifi signal, it will be much easier on your batt than LTE
The question is does the feature itself end up using more battery?
dc/dc said:
In my experience, using WiFi uses significantly less battery than LTE. The science behind it is that the WLAN radio has significantly lower output power than the cellular modem and therefore uses less battery. My real world experience is this:
I text frequently, check FB and IG, receive push mail from 3 Exchange accounts, and spend an average of 20 minutes on the phone each work day. I do not have a desk phone or home phone.
WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining
WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.
WiFi off (usually only happens when travelling): I usually arrive back at the hotel with 20-35%, which means I need to charge before I leave the hotel for dinner.
Click to expand...
Click to collapse
So wifi without wifi calling uses more battery? am i interpreting this properly?
<WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining>
<WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.>

WiFi is the issue not WiFi calling.

masri1987 said:
i keep hearing this misnomer that wifi uses more battery, if you have it on searching and not connecting i can see how, but if you are connected to a good wifi signal, it will be much easier on your batt than LTE
The question is does the feature itself end up using more battery?
So wifi without wifi calling uses more battery? am i interpreting this properly?
<WiFi on with calling: I can usually go to bed at 2200 with 60-70% battery remaining>
<WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.>
Click to expand...
Click to collapse
Ya it probably would use more battery. If WiFi is on but not the calling feature then it would still rely on the cell tower and modem inside the phone to send texts thus using more battery. But of course with all of this YMMV.

dc/dc said:
I can usually go to bed at 2200 with 60-70% battery remaining
WiFi on without calling or mixed in/out of office: I usually will have around 40-50% at 2200.
Click to expand...
Click to collapse
Who goes to bed that early?
Sent from my SM-N910T using XDA Free mobile app

masri1987 said:
So wifi without wifi calling uses more battery? am i interpreting this properly?
Click to expand...
Click to collapse
Correct, for the reason GriffenD mentioned. I sometimes turn it off when I have text issues with my girlfriend, who has Verizon now. Sometimes messages just disappear into the æther.
BACARDILIMON said:
WiFi is the issue not WiFi calling.
Click to expand...
Click to collapse
What issue? There is no issue with WiFi.
darekz said:
Who goes to bed that early?
Click to expand...
Click to collapse
People that get up at 0630. I like my beauty rest. LOL

dc/dc said:
Correct, for the reason GriffenD mentioned. I sometimes turn it off when I have text issues with my girlfriend, who has Verizon now. Sometimes messages just disappear into the æther.
What issue? There is no issue with WiFi.
People that get up at 0630. I like my beauty rest. LOL
Click to expand...
Click to collapse
The issue with WiFi is it searches /scans none stop and that drains the battery. Everyone seems to have the same issue.

BACARDILIMON said:
The issue with WiFi is it searches /scans none stop and that drains the battery. Everyone seems to have the same issue.
Click to expand...
Click to collapse
I don't want to argue, but that is not totally correct. Those scans are not constant, they are on a schedule, and generally have a negligible effect on battery life. They can have an impact if a user has attached their device to many networks and the device has a huge list through which to scan. Power users, I would hope, clean out their network list, making it essentially a non-issue. Once the device is attached to a network, as it would be in the instance referenced in this thread for WiFi Calling, then it scans even less often.

dc/dc said:
I don't want to argue, but that is not totally correct. Those scans are not constant, they are on a schedule, and generally have a negligible effect on battery life. They can have an impact if a user has attached their device to many networks and the device has a huge list through which to scan. Power users, I would hope, clean out their network list, making it essentially a non-issue. Once the device is attached to a network, as it would be in the instance referenced in this thread for WiFi Calling, then it scans even less often.
Click to expand...
Click to collapse
I guess my phone is bad cause I am locked in on a great signal and if I put the phone down every 30 seconds phone does a scan even if I clear all the networks. When it scans it adds thems back and continues the scan.
BAD ASS NOTE 4

ASUS routers (ac86u/ac87u/etc) - battery drain fix

I mainly work at home, so pretty much on wifi all of the day except for the odd hour or so to do school runs. I noticed that with WIFI on, i'm getting terrible battery life - less than 24hrs. This is with most things disabled (location history, google now, etc) but wifi and mobile data on all the time and GPS enabled. Of course mobile data doesn't kick in until i leave my wifi zone. Unfortunately even with location services off, Samsung doesn't have a option to disable the always scanning totally. This means ONLY when you are out of wifi connectivity will the always scanning option turn off (assuming you have the "allow always scanning" in the wifi settings turned off). Lo and behold with this setting (always allow scanning - when wifi on only) and spending more time on mobile data i notice my battery life is infinitely better. I went from the usual 30° battery drain slope to a flat line barely draining battery. So with no other change in apps/settings/etc, and just turning my wifi off, so LTE kicked in and phone in same location in the house i practically doubled battery life.
So then i started looking and reading. Finally it is clear it is my router/wifi draining the bloody battery so i started delving deeper. Now i have an asus ac68u with stock firmware. I changed the DTIM as follows under Wireless->Professional tab - (i can't post links or images so use the below in your browser)
193.104.35.163/asus.png
Now i'm back to a flat line drain on wifi.
May work for others.

(sigh)...my router doesn't let me configure those settings (ea9200). Still getting the drain

There could be multiple reasons for battery drain so this is not the holy grail for battery drain issues.
However the router issues is easy to identify. If you're getting battery drain for no reason at home/work where you are on wifi coverage, just switch wifi off and go onto your mobile plan (assuming you have reasonable 3g/4g/lte service) and look at your battery graph before and after. If you go from a ski slope to a flat line, then you have wireless problems. Otherwise look elsewhere. Remember your 'always allow scanning' setting should be set for 'wifi only' for this test.

This fix worked wonders for me. I immediately noticed 10x better battery life on par with having wifi disabled.

iforgotmyusername said:
193.104.35.163/asus.png
Now i'm back to a flat line drain on wifi.
May work for others.
Click to expand...
Click to collapse
hi..could you perhaps upload the pic to dropbox and share the link here? you could use a url shortener as well

qpalcb said:
hi..could you perhaps upload the pic to dropbox and share the link here? you could use a url shortener as well
Click to expand...
Click to collapse
I don't have a dropbox account, and i can' t post links yet so neither of that would work. Just put h t t p in front of that and it will work fine (and it's not a click bait, popup adverts, etc)

iforgotmyusername said:
I mainly work at home, so pretty much on wifi all of the day except for the odd hour or so to do school runs. I noticed that with WIFI on, i'm getting terrible battery life - less than 24hrs. This is with most things disabled (location history, google now, etc) but wifi and mobile data on all the time and GPS enabled. Of course mobile data doesn't kick in until i leave my wifi zone. Unfortunately even with location services off, Samsung doesn't have a option to disable the always scanning totally. This means ONLY when you are out of wifi connectivity will the always scanning option turn off (assuming you have the "allow always scanning" in the wifi settings turned off). Lo and behold with this setting (always allow scanning - when wifi on only) and spending more time on mobile data i notice my battery life is infinitely better. I went from the usual 30° battery drain slope to a flat line barely draining battery. So with no other change in apps/settings/etc, and just turning my wifi off, so LTE kicked in and phone in same location in the house i practically doubled battery life.
So then i started looking and reading. Finally it is clear it is my router/wifi draining the bloody battery so i started delving deeper. Now i have an asus ac68u with stock firmware. I changed the DTIM as follows under Wireless->Professional tab - (i can't post links or images so use the below in your browser)
193.104.35.163/asus.png
Now i'm back to a flat line drain on wifi.
May work for others.
Click to expand...
Click to collapse
I have the same router as you and I went to the professional tab. Then what do I do with the IP you posteD? I think this solution is the right one guys but I haven't figured it out yet
edit: Did not work

mrlooolz said:
I have the same router as you and I went to the professional tab. Then what do I do with the IP you posteD? I think this solution is the right one guys but I haven't figured it out yet
edit: Did not work
Click to expand...
Click to collapse
Paste the IP in your browser to show the screenshot he took with the settings he changed. Basically you need to set the DTIM Interval to 3 and the Beacon Interval to 300 for both the 2.4 GHz and 5 GHz bands.