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Basically, when I leave wi-fi on my phone has incredible battery life. If someone has already mentioned this feel free to bury this post, but to my knowledge it doesn't seem this has been posted yet.
With wi-fi off and 3g on
- Battery lost 5-6 percent per hour
Wi-fi on
- Battery lost 1-2 percent per hour (sometimes less than 1 percent depending on what your doing)
Right now after having my phone on for 34 hours my battery is still at 70 percent! I'm fairly certain this is because it disables the 3g radio altogether which apparently is a real battery hog. That or maybe my phone is just a fluke. I really don't know.
This also seems to be tied to the htc sense rom (correct me if im wrong) but if i remember correctly battery drainage increased when wifi was enabled in the stock rom. Currently, I'm using the latest htc sense rom from modaco, I'd really enjoy hearing if enabling wifi helps others extend their battery life.
your having better battery life with the Desire ROMs? that odd, my battery life with a Desire ROM was 20-30% worse compared to stock.
amlwaycooljr said:
Basically, when I leave wi-fi on my phone has incredible battery life. If someone has already mentioned this feel free to bury this post, but to my knowledge it doesn't seem this has been posted yet.
With wi-fi off and 3g on
- Battery lost 5-6 percent per hour
Wi-fi on
- Battery lost 1-2 percent per hour (sometimes less than 1 percent depending on what your doing)
Right now after having my phone on for 34 hours my battery is still at 70 percent! I'm fairly certain this is because it disables the 3g radio altogether which apparently is a real battery hog. That or maybe my phone is just a fluke. I really don't know.
This also seems to be tied to the htc sense rom (correct me if im wrong) but if i remember correctly battery drainage increased when wifi was enabled in the stock rom. Currently, I'm using the latest htc sense rom from modaco, I'd really enjoy hearing if enabling wifi helps others extend their battery life.
Click to expand...
Click to collapse
Actually, it's a well known fact that 3G uses more power on most (every?) phones than Wifi... so you're not alone.
Hey when you say WIFI on..do you mean WIFI and EDGE or did you completely disabled the radio?
I never would have thought having wifi on would extend battery life to such a great extent though, in most of the latest cell phone reviews and what not everyone recommends to have wifi off saves battery life but in this case just the opposite is true. I kinda knew the wifi was more efficient but I never expected such a large benefit from leaving wifi on all the time.
@ram130 I haven't actually touched the radios at all so I expect them all to be on or at the very least have edge on, I am able to receive and send calls and txt so I'm assuming at least some cell radio has to be on. All I did was use the htc sense rom and enable wifi.
The cellular radio is still on, but 3G/Edge (data) are disconnected. I don't know how Edge compares to Wifi, but 3G is a battery killer in comparison.
uansari1 said:
The cellular radio is still on, but 3G/Edge (data) are disconnected. I don't know how Edge compares to Wifi, but 3G is a battery killer in comparison.
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amlwaycooljr said:
I never would have thought having wifi on would extend battery life to such a great extent though, in most of the latest cell phone reviews and what not everyone recommends to have wifi off saves battery life but in this case just the opposite is true. I kinda knew the wifi was more efficient but I never expected such a large benefit from leaving wifi on all the time.
@ram130 I haven't actually touched the radios at all so I expect them all to be on or at the very least have edge on, I am able to receive and send calls and txt so I'm assuming at least some cell radio has to be on. All I did was use the htc sense rom and enable wifi.
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Click to collapse
In other words you have "use 2G networks" checked right?
I'm gonna try this is now. I'm currently at 3hr 32m unplugged with 80% left. I have wifi enabled and on the stock rom. So I'll post back when I wake in a few a hours and see how it goes.
My only problem:
Wifi seems to disconnect alot during the hour regardless if sleep policy is set to NEVER. My wifi signal is -78dBm to -86dBm in my room and on channel 11(used wifi analyzer). Any suggestions why?
I have the same experience at home, I enable Wifi and leave the phone stay home for a couple of days and battery still 40%, when I go out and wifi is not connected, 3G kicks in and battery drops much faster.
I'm using cyanogen 5.0.4.1
Interesting. Did not know this!
I guess I won't feel so bad about leaving my phone on Wifi all day!
Also, does anyone know how much power is used by not having a radio signal and letting it constantly search? That seems to destroy my battery. But sometimes I am in an area with wifi but no radio access (deep within a building).
It's too bad this phone doesn't have UMA - that would make up for T-Mobile's lack of indoor coverage (at times), and probably improve battery life a lot in some cases.
But I have to say that on another phones I've used, especially WinMo devices, using WiFi instead of 3G seemed to always use more battery. But, it could very well be different on this phone...I'm definitely going to give this a try.
im not sure about the percentage but i agree,the battery drain is considerably more when searching for radio.im in a building most of the day and it doesnt take long.miss the UMA i had on my bberry.
Paul22000 said:
Interesting. Did not know this!
I guess I won't feel so bad about leaving my phone on Wifi all day!
Also, does anyone know how much power is used by not having a radio signal and letting it constantly search? That seems to destroy my battery. But sometimes I am in an area with wifi but no radio access (deep within a building).
Click to expand...
Click to collapse
I also Get. About 25% better battery on wifi
Well after 10hrs of the phone being on stand by I woke up. It was at 46%!! my god. Anyway I checked my email, read an article all taking around 15mins and guess what? I had 30% left!. I put it back to stand by for 3hrs and took a look at it and had about 16% left...
It is now charging after one hour with just 10min use of downloading apps ..Can ANYONE tell me why my battery is draining so much on wifi? When its on EDGE for the night after 10hr I would have around 70% left from a full charge. Anyone can help me out here?
I shall be getting a replacement battery for free Tuesday.
Stock android.
ram130 said:
Well after 10hrs of the phone being on stand by I woke up. It was at 46%!! my god. Anyway I checked my email, read an article all taking around 15mins and guess what? I had 30% left!. I put it back to stand by for 3hrs and took a look at it and had about 16% left...
It is now charging after one hour with just 10min use of downloading apps ..Can ANYONE tell me why my battery is draining so much on wifi? When its on EDGE for the night after 10hr I would have around 70% left from a full charge. Anyone can help me out here?
I shall be getting a replacement battery for free Tuesday.
Stock android.
Click to expand...
Click to collapse
Did you set your phone to only use 2G networks also? If you're not charging, wifi will probably disable after not being used for a while..so it's probably rolling to 3G if you haven't disabled it.
I'm not saying it's convenient to constantly switch back and forth... but this explains why it may not be a good test of the battery life the way you're running it.
uansari1 said:
Did you set your phone to only use 2G networks also? If you're not charging, wifi will probably disable after not being used for a while..so it's probably rolling to 3G if you haven't disabled it.
I'm not saying it's convenient to constantly switch back and forth... but this explains why it may not be a good test of the battery life the way you're running it.
Click to expand...
Click to collapse
Well yes I have it on 2G only. Any thing else could be contributing to it dying so fast?
Well I found a way to use my laptop as an AP. So I connected my N1 to it and getting full bars(-41dBm) in my room now. No wifi disconnects so far!(maybe it was my linksys before ?).. So far the battery is at 86% with some 3D games, been unplug for 1hr 50min now. I'll put it to stand by now and see how it looks after 10hrs.
I'm on a stock firmware(not rooted). 2G only selected.
The way I understand it is as follows:
Phone is on STANDBY:
3g==2g* which are both more efficient then wifi (that's why the default wifi policy turns wifi off if it's not being used)**
Phone is ACTIVE:
wifi is more efficient then 2g/3g because:
1) It's waaay faster and thus causes less battery drain* and
2) The AP (router) is much closer to the phone then the cell tower so in theory it doesn't need to use as much power to talk to the router.
*http://code.google.com/events/io/2009/sessions/CodingLifeBatteryLife.html
4:45min into it there is a power usage chart and 3G/EDGE idle power usage is about the same - also somewhere else in the video they talk about wifi vs 3g usage when transferring data.
** http://code.google.com/p/sipdroid/wiki/NewStandbyTechnique
States that 3g standby is more efficient then wifi
drak0 said:
** http://code.google.com/p/sipdroid/wiki/NewStandbyTechnique
States that 3g standby is more efficient then wifi
Click to expand...
Click to collapse
Someone needs to test this ok. ...already testing wifi
Ok I'm at 11hrs 30min on wifi and its at 67% with light usage(checking email, news for 5min)..improvement? kinda, because since turning off my laptop it switched back to getting low signal(-81dBm) from the router in the next room. Weird? I'm still thinking. anyway I'm heading out so gonna use the phone more today, lets see if it gets me through the day.
Still no where near the thread starter 30hrs!! Maybe stock really sucks? bad battery anyone??
@ram130 I'm not sure how my battery is lasting as long as it has so far. I'm up to what would be an insane number, 65 hours 36 percent left .. this battery just wont die. I haven't the slightest idea how it's lasting this long I just leave wifi on all the time and turn wifi standby off. If anyone could explain how leaving wifi on more than quadruples my battery life I'd sure love to know.
Help!
I'm running the 81xx firmware on a direct-from-dell unlocked Streak.
My battery life has so far been abysmal, and looking at the battery usage screen, my cell standby is usually over 60% while idle is less than 20%, everything else like 2%. This isn't from weak signal, though; I am in a well-covered 3g-only area and my phone has reported only being disconnected about 4% of the time.
Another strange thing is, my data indicator is constantly switching between the H symbol and the 3g symbol.
Anybody know what's going on?
It might be that while you are well covered for 3g, you are marginal for HSDPA and that constant switching back and forth is using your battery. I have not tried it but have a look and see if you can disable HSDPA in settings somewhere and see if that helps.
i'm usually around 40% cell standby.. do u have any task killer apps installed? although people think those are useful they usually do more harm then good.
I have the same problem, and I used another Android phone in the same location (hence same cell coverage) with no such problems. I just took my phone off the charger and had the display on since then non-stop. Cell standby used as much battery as the display!! There's no way that is appropriate.
I'm running build 8102, but it was the same with 6941 before. Can't tell about 1.6 as I bought my streak used with 6941 on it.
What Android version are you guys running? Maybe we can find common denominators.. :/
Edit: here's a screen shot of the battery usage after a while off the charger with the screen on constantly:
http://i.imgur.com/3OrqZ.png
You must be Australian W0nk0
Do you think your antenna might be loose or defective?
I can't imagine the antenna to be loose really - but who knows, I bought mine used. If so, I think there is a signal strength value in " about phone" somewhere, no?
What signal strength are others getting? I'll post mine later, I'm on airplane mode right now so that I get some battery life.. :/
For signal strength, I am getting -75 to -95, and 9 to 12 for the two values while riding the train (not subway).
It also appears my battery life is quite good when my phone is in standby and not doing anything... the problem seems to come from net browsing or anything else that uses an active connection... Just browsng XDA is taking about 2% a minute!
Oh and my android is the 81xx 2.1 version with the modaco tweaks
Sent from my Dell Streak using XDA App
I had really high cell stand-by too. then i installed juicedefender, now my cell standby is down to about 29%.
I think the main thing is that it disables data connections while your screen is off and only turns it back on when the screen is on and unlocked. It also has a setting where it enables data connection periodically to allow background syncs and whatnot.
I'd recommend you guys give it a go, it had almost doubled my battery life!!
Mine shows,
cell stand by 50%
phone idle 44%
it seems quite common on the streak as I read in all the forums. I am on 2.1 stock rom? what's 1.6 like?
So for the past week and a half my G2 battery started draining super fast and it seems that the cell standby is the problem.
If I reboot the phone and have it on for 10mins cell standby time will show time on being 20mins. How is it searching for a signal an extra 50% of the time when it hasn't been on?
Also it will show that I have been without a signal for 50% of the time the phone has been on when I've never lost signal at all.
So the point of this thread is to see if I have a defective device so I can get it replaced. If anyone can help me out and post their Cell Standby times and Time Without signal percentages after a reboot and/or after a days use I'd greatly appreciate it. Thanks.
I'm glad I'm not the only one that had that problem. I had literally the EXACT same problem you are having, and exchanging my phone for a new one fixed it. My cell standby with that phone was in upwards of 79% and averaged 50% without a signal according to that screen. The new phone sits anywhere from 14-40% cell standby, and although there is definitely something wrong with how the radio on this handles signals, I don't get dropped calls anymore and it spends 0% of the time without a signal.
Another problem I had, and am still having, is that data connections just drop with no warning and I have to either wait forever for it to figure it out (there are no indicators of this status in the task bar, however nothing data wise will load) or put in in and out of airplane mode to reestablish a connection. I know plenty of others who have this issue as well and wonder if you do too.
Sent from my T-Mobile G2 using XDA App
I did some checking around with other people that have Android phones as well (not just the G2) and they do not have this problem either. The good news is T-Mobile is sending a replacement because this unit is in fact a defect. Thank you Gwanatu for posting.
Guys, can you tell me how to see this cell standby info? I got mine yesterday and the disconnects are starting to irritate me. Behaves identically to my Nexus, up arrow stays for a looong time, up to a min until it starts receiving data.
Still agonizing about replacing my Nexus, so if these disconnects are a G2 "feature" as well, then I'll just go back...
Thanks
Sent from my T-Mobile G2 using XDA App
fosormic said:
Guys, can you tell me how to see this cell standby info? I got mine yesterday and the disconnects are starting to irritate me. Behaves identically to my Nexus, up arrow stays for a looong time, up to a min until it starts receiving data.
Still agonizing about replacing my Nexus, so if these disconnects are a G2 "feature" as well, then I'll just go back...
Thanks
Sent from my T-Mobile G2 using XDA App
Click to expand...
Click to collapse
Settings>About Phone>Battery Use>Cell Standby.
A T-Mobile rep told me they are using new/different type sim cards for smart phones and that could be a possible issue if you are using an older one. Mine was about 5-6yrs old.
My cell standby is at 58% and time witout a signal is 50%...
Did a quick google search and found the airplane mode trick
1. Plug in phone charger
2. Put phone in Airplane mode
3. Put phone to sleep for a minute
4. Turn off airplane mode
5. Unplug phone
I did this and now my cell standby is at 14% and time without a signal is at 3%
fwiw my cell standby is 21% since last reboot days ago.
I do not have php and it is well past 15 days...airplane trick no longer works...still sitting @ 41% cell standby...don't know what else to do
Sent from my T-Mobile G2 using XDA App
Does any one think a factory reset and training the OS would help?
Sent from my T-Mobile G2 using XDA App
ive noticed the cell standby % being higher than it was on my nexus one. cell standby is typically the highest % item in my battery use list (my nexus was always the damn screen sucking up power). if i click it it shows the % time without a cell signal. for me, its always been 0% whenever i check so im not losing signal ever it seems. my battery life is actually quite awesome with this phone so it doesnt seem to be affecting anything really. maybe it has to due with the fact that this phone's SoC is a smaller fabrication and more efficient? that might make other stuff appear to use more power compared to older phones that had less efficient SoC's. just a thought
I just in stalled Screebl lite app. Basicly keeps the phone from going off. Once installed my cell standy by went from 37% to 12%. Can any one else confirm the same results?
Sent from my T-Mobile G2 using XDA App
My cell standy was running at 60+% with no signal running 50%. I did the online chat with Customer Care, and she ended up saying they were going to replace the phone. Funny part is that during the troubleshooting, I pulled the battery for a few minutes, and since then, cell standby has been 39%, with 0 lost signal time. I don't know what that did, but battery life has increased a ton. And a replacement is on the way...may try it for a few days, but this is working fine, so not sure I am going to exchange.
So I recently switched from MetroPCS to Verizon. The day I switched my battery died twice as fast. Cell standby being the problem according to the battery stats. 2nd day, same exact thing. So I did a factory reset. Then the next day the same exact thing. This did not happen on MetroPCS. Also, it seems to only be a problem when WiFi is on, but not connected for most of the day. Which is strange, because I don't see how your carrier would make that a problem. Has anyone else experienced this? Fixed this?
Sent from my Nexus 6P using Tapatalk
No signal?
Check your cell signal connectivity to see if you are losing signal throughout the day, if your phone loses signal your Cell Standby will constantly search for a signal untill it finds one eating your battery. I have this problem when at work, I don't get signal and my battery drains. I fix this by using Airplane mode when I know I don't have signal. Saves my battery Everytime.
Yeah, would be surprised but Verizon may have worse coverage than the Sprint MVNO in your work area. If your cell radio is constantly hunting, it will chew battery. Have you tried Wi-Fi advanced settings to leave Wi-Fi on at all times, even while the phone is sleeping? May sound counter intuitive, but for me Wi-Fi uses almost nothing battery wise. But like Noland said, if you KNOW you will be in an area of poor reception for a long period of time, airplane mode will save battery. Also check data usage by App. You may have a rogue app sucking bandwidth. Cheers.
SocksNUrToaster said:
So I recently switched from MetroPCS to Verizon. The day I switched my battery died twice as fast. Cell standby being the problem according to the battery stats. 2nd day, same exact thing. So I did a factory reset. Then the next day the same exact thing. This did not happen on MetroPCS. Also, it seems to only be a problem when WiFi is on, but not connected for most of the day. Which is strange, because I don't see how your carrier would make that a problem. Has anyone else experienced this? Fixed this?
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Click to collapse
Some Verizon members reported poor cell reception with the current radio. I think the January security updates include a new radio. Maybe that will help.
Hi guys,
Hope you all doing great.
Guys i have LG V20 n using from last year. It was working great without any issue. Battery timing was awesome. Giving me 5:30 to 6 hours screen on time. Almost day and Half on normal use. 2 days back something happened no idea what. Now phone idle using more then screen on time and wifi is always on even its off. I tired to uninstall app, then factory reset but still same.... No luck.... Any solution ??
Go to your location setting use the tab in upper right, click setting and turn wifi scanning off.
I tried this but no luck
As i mentioned i tried everything thing, like location off, wifi and Bluetooth scanning off, play services off, Almost everything is off, but still same. No luck...
shazzi said:
As i mentioned i tried everything thing, like location off, wifi and Bluetooth scanning off, play services off, Almost everything is off, but still same. No luck...
Click to expand...
Click to collapse
Try to install battery monitor application (I use betterbatterystats) to find out what is causing your idle drain. But to be honest, I've never got 5-6 SOT. My idle drain is about 0,7% per hour with greenify, managed Google play services wakeup, custom kernel, kernel adiutor and about 80 apps on board.
I'll try and help the best I can..
Within the last year or so..I have been reading about this issue quite often. That is, people posting about "Phone Idle" having high percentage in battery stats. And then they are off to hunt down the culprit. The truth is, "Phone Idle" is NOT eating up your battery. Phone Idle is just that.... Time the phone has spent being idle (being still, or CPU/Battery not being used). Or in this case, percentage of total battery "usage" that belongs to "Phone Idle". In actuality, phone idle isn't "using" anything. The "usage" for phone idle is really time NOT used. A higher percentage is better. If your phone sat for 2 days straight without being used...the phone idle % will be real high. Also, you can't "Greenify" phone idle. You only greenify phone idle when you greenify other apps.....think about it.
And as for Wifi. The Wifi radio on this phone is a bit more power hungry. It doesn't even include any power saving options that some phones, like my Samsung S4 has. My S4 used on average from 2% - 6% depending on signal strength. The V20 can use from 7% - 11% ..again depending on signal strength. If you leave Wifi on overnight and it's in bad proximity to the router..10-11% is normal.
What is your average signal strength for your 4G and cellular (calls)? CDMA has 1X, I'm not sure what GSM uses. If it's in the high 90's and higher, that right there could be chewing up your battery. Phone radio often doesn't even show on the usage list.
How often do you need to charge? Also how much time between a charge and what is your usual screen on time now..after you wrote this post? Phone idle is only at the top because the "idle" time now exceeds the amount of time you have your screen on. ......don't take this the wrong way but some people think the phone idle is actually something that's draining the battery. It's not..it's just placed within the list. Ignore the Mah it shows for it. That just assumes it's some app and it tries to convert everything into mah..and I really don't know how accurate that is. But it obviously doesn't apply to Phone Idle. Speaking of...what is the amount of phone idle time?