So I just bought a 3.6 Player and I'm wondering why the majority of the battery use is by Cell Standby. For that matter, why the hell is there a toggle for airplane mode?
Sent from my beastly Galaxy S 2.
Airplane mode doesn't just switch off cell, it also disables wifi, Bluetooth, fm radio, and GPS. Concerning cell stanby, I had that problem when I used a gt-i9000 settings.apk, but I don't think it actually drains anything (at least in my case.
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I kinda figured, since it has almost zero battery loss when not in use. Now if only the 2.3.6 could be rooted...
Sent from my beastly Galaxy S 2.
Hi. Was wondering why i had Cell Standby account for 90% of my battery too. I found this thread but it's quite old, not sure if it's better to "necro" an old thread or open a new one.
Does somebody actually managed to find why a device with no cell communications does show cell standby using Battery? Is it related to some other signals (GPS, FM Radio receiver, Bluetooth)? I turn off BT and WiFi when i don't need them and my battery isn't really drained when in standby, but if there is still some small drain, i would like to know where it comes from and how i can address it.
My guess has been that there's just a flaw in the reading of battery stats and it's just throwing whatever random drain due to just time in under cell signal. There's never a lot of actual standby drain going on, no matter what it says.
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Related
I have a question to everyone. I understand wifi drains less battery than 3g. But what if you are not surfing the web? Which would drain less battery while using the phone but not surfing the web?
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Depending on what you're doing...
If you have a strong 3G signal, that's probably your best bet.
If you leave wifi on, it will continually search for available networks, which drains battery. However, if you're somewhere with little or no cell reception, the phone uses more power to search for a cell network.
If you're not actually using any online service, airplane mode is unquestionably best.
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Get the smoda widget.
One button, one click. And ur data is off.
Helps w battery. I font know how much. But I ALWAYS download that widget first when I restore my phone
my second widget is from droidmania. Get the wifi one
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At home I have weak 3g signal. Overnight, 8 hrs, WIFI conected to home network uses about 6-7% while weak 3g about 40%.
I leave Wifi, 3g, GPS, and bluetooth on all day and use my phone a lot and my battery lasts a whole day. We shouldn't have to **** around with enabling settings anytime we want to use the damn thing. If however you are running low on juice, then at that time you should start turning things off, and lower the screen brightness. Note: the auto brightness setting uses more juice than manual settings.
Heya,
For the first time ever, I went to sleep in the basement of my house which gets little to zero reception down there. I noticed upon waking up. My phone went from 100% battery (from the previous night) to 79% Battery, and the Cell Standby was the culprit sitting at 99% usage.
First, I'm wondering if anyone else knows of this issue.
Secondly, does the cell standby just drain like mad when you don't have a signal? Should I be sticking my phone in airplane mode when I have no signal?
tigris67 said:
Heya,
For the first time ever, I went to sleep in the basement of my house which gets little to zero reception down there. I noticed upon waking up. My phone went from 100% battery (from the previous night) to 79% Battery, and the Cell Standby was the culprit sitting at 99% usage.
First, I'm wondering if anyone else knows of this issue.
Secondly, does the cell standby just drain like mad when you don't have a signal? Should I be sticking my phone in airplane mode when I have no signal?
Click to expand...
Click to collapse
It's not an issue.. You admitted you have little to no signal there so of course cell standby would drain your battery. Especially with two radios on board..
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joshnichols189 said:
It's not an issue.. You admitted you have little to no signal there so of course cell standby would drain your battery. Especially with two radios on board..
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Click to expand...
Click to collapse
Also, remember that the 99% is just for the battery that has been used. So if your phone is off and nothing is happening it is not unlikely that the only battery drain would be caused by the radio.
tigris67 said:
Heya,
Secondly, does the cell standby just drain like mad when you don't have a signal? Should I be sticking my phone in airplane mode when I have no signal?
Click to expand...
Click to collapse
Yeah turn airplane on or phone off. No reception, no point in it being on while you sleep unless you use it for an alarm
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I see. Alright then. I guess I'm worrying over nothing. Thanks.
My battery doesnt last at all with wifi. I can lose like 30% with it on overnight. Is this normal?
Using westcrip 9.6 but noticed this on other roms too.
Sent from my GT-I9100 using xda premium
Turn off wifi and data. Then grab a metal coat hanger and prod it in the head phone socket in the top of the phone.
Really good signal and no no loss of battery at all.
Sent from my back passage
Wifi alone will not cause a 30% drain, wifi uses less power than 3g so your problem lies somewhere else. Have you looked at better battery stats, sounds like you've got wake lock issues.
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Sometimes i leave the phone turned on during the night and wifi enabled.. I lose not more than 5% ... so i think your problem is something else
How would one fix wake lock issues?
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Search for BetterBatteryStats on here/Market & install it. Let it run for 8-10 hrs/overnight/whatever. Read the first 10/last 10 pages of the BetterBatteryStats thread on here so you can get an idea of what information/screenshots you'll need to post so the guys who regularly post to that thread can maybe help you identify/reduce/eliminate the wakelocks.
Wifi *can* drain loads. There's a bug that causes certain routers to keep the phone awake. My dlink dir 655 does this - kills battery in a couple of hours idle. My netgear doesn't...
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#removed
Has anyone managed to find a fix for the cell standby battery drain? As for the people not suffering from it, what rom and kernel are you using?
Sent from my GT-I9300 using XDA
HyperGalaxy with siyah kernel = the perfect combination....so fast with an abundance of free ram and no signal battery drain
Sent from my S3 overclocked to 1.6ghz with HyperGalaxy Rom
Thanks! I don't have the issue anymore with hypergalaxy!
Sent from my GT-I9300 using XDA
has become much better since i flashed XXALF2 baseband and Franco r2 kernel. Standby (mobile data on) drop was around 4-5% per hour before, now its around 2.5% per hour
Stock LF2 no problem .
jje
Cell standby drain cannot be confirmed by all people and is related to the 3G setup, antennas and location of your provider.
Here the network show a very bad case of hopping when switching to/from IDLE (fast dormancy) which drains the battery in no time.
I'm currently running Juicedefender Ultimate beta with AOSP helper which switches to 2G when the screen is off and no data is transferred. Only issue is that you'll loose connectivity twice (3G->2G and 2G->3G) for a very short time but other than that it seems to work fine and has solved my battery drain problem.
I've been used to switch back to 2G as soon as I don't need 3G/HSPA with my S1 as it's drain is even worse, so it's no big change for me
JJEgan said:
Stock LF2 no problem .
jje
Click to expand...
Click to collapse
i conquer on this.
i do use now 2x battery saver, which does the same thing as the juicedefender, but even before that, my battery is very well managed. I would assume that the fact of cell standby being on the top of the list when you havent been using the phone for anything else is logical to be there. That IS what will be draining the battery. I would only see the problem on those handsets that this drain is not within acceptable limits, ie, whatever people have measured as normal drain for these circomstances.
I use juicedefender and with the latest update the battery drain is less than 2% an hour, im happy with that
Ive always found by the the biggest drain in standby being data always being on
That's not totally correct. Data is not what is actually draining your battery (at least it never was for me).
It's 3G not being in IDLE due to sending/receiving data, fast dormancy not being (properly) supported by the network or the network provider having a badly configured/balanced network.
If you switch to 2G, you'll find that your phone can run 2 days with data enabled if not heavily used.
Big exception seems to be Exchange's ActiveSync which is, when an account is configured (whether enabled or not) always top-of-the-list in BetterBatteryStats. But well... Exchange sucks anyway =)
I should have typed 3g data, this single act of letting the 3g connection be managed by juicedefender doubled my battery life
Yeh i have no idea for the technical reason but managing the 3g connection makes a big difference to me
hmm i am not aware of the actual network causing problems with the drain issue during 3g/2g signal. I only knew that when the signal is bad in general or you get no signal at all, then the phone is wasting too much energy trying to log on to a network itself.
i have the 3g swap on my 2x battery saver to rotate every 5min when the screen is off. Its the smallest amount of time you can apply. However i dont know if im the average phone user, as i see here lots of people doing a lot more things with their handsets during a day.
Not so sure about the 3G data thing but I'm only using the phone on wifi with data disabled and I still got the battery drain.
Sent from my GT-I9300 using XDA
Wifi is another issue, especially when you have the 5Ghz band enabled and your phone hops between both. Try checking if your Wifi's channel is crowded and configuring the router to another less crowded one.
Then force your phone to use either the 5Ghz or 2.4Ghz band depending on your setup; drain should've gone away.
d4fseeker said:
Wifi is another issue, especially when you have the 5Ghz band enabled and your phone hops between both. Try checking if your Wifi's channel is crowded and configuring the router to another less crowded one.
Then force your phone to use either the 5Ghz or 2.4Ghz band depending on your setup; drain should've gone away.
Click to expand...
Click to collapse
Gonna try that out and will see how it goes
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I've had a combination of two weird / PITA problems since upgrading past LE6 leak:
1. Slow to lock GPS
2. REALLY bad battery life (losing 10% an hour while idle in some cases).
In the last few days I was at a conference with known poor signal indoors, so I started toggling Airplane mode on during some of the sessions. I noticed a DRAMATIC change in battery life. I thought the improvement was too good for just having disabled for about 2 hours each day, so the last two days I've toggled Airplane mode on and immediately back off after heavy use... I've done this today and after frequent use repeated the toggle routine. At the time of this posting I'm sitting at 70% at a time of day I'd usually be around half that.
Anyone willing to try this and let me know if I've just been lucky the last few days?
More info:
I've run CPU Spy and I know my phone isn't going to deep sleep as frequently as it should. I installed better battery stats and nothing was causing partial or kernel wakes so I was about to give up.
I believe this may stem from the GPS having crappy lock time, since I frequently use Facebook on the phone and it activates GPS (and doesn't F'n lock) I figured airplane mode after use couldn't hurt.
Qualifiers for a valid test include the two problems I mentioned above. If you're lucky enough to not have these issues, please recommend your settings... WiFi is off with screen off, i'm using screen filter at 38%... I've tried task killers, I've tried many different ROMs... this is the first time I've seen any noticeable improvement.
I heard that powering down your phone completely works even better...not sure though, might need to test it.
Jk. But yeah, it's well known that the radios are one of the biggest drains of battery besides the screen. Turning them off will obviously increase battery life, but it also turns your phone into a big iPod touch, as you can't receive calls, texts, etc. Add for the GPS issue, several roms have zero GPS issues, try them out, see which gives you best GPS. And turn it off when you're not using it.
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welchertc said:
I heard that powering down your phone completely works even better...not sure though, might need to test it.
Jk. But yeah, it's well known that the radios are one of the biggest drains of battery besides the screen. Turning them off will obviously increase battery life, but it also turns your phone into a big iPod touch, as you can't receive calls, texts, etc. Add for the GPS issue, several roms have zero GPS issues, try them out, see which gives you best GPS. And turn it off when you're not using it.
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The battery life advantage exists even when the radio was only toggled off for about 1s. I'm no longer leaving it off for hours.
Yeah, probably because it kills the GPS searching for satellites. So either flash a new modem or ROM. I leave my GPS on 100 percent of the time, as when it works properly there is no battery drain when an app isn't using it. The GPS is known to be hit or miss with lf6, so take that and fix it with a modem flash.
Edit: in other words, your toggle method won't improve battery anymore than a properly working modem, and it's a lot more of a hassle to you to keep toggling instead of trying different modems
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welchertc said:
Yeah, probably because it kills the GPS searching for satellites. So either flash a new modem or ROM. I leave my GPS on 100 percent of the time, as when it works properly there is no battery drain when an app isn't using it. The GPS is known to be hit or miss with lf6, so take that and fix it with a modem flash.
Edit: in other words, your toggle method won't improve battery anymore than a properly working modem, and it's a lot more of a hassle to you to keep toggling instead of trying different modems
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Click to collapse
Do you have a recommendation on a modem then? I'm currently using King-Kang (love AOKP and Paranoid Android... Dagr8 did one hell of an integration). I've left the kernel and modem alone since then.
I'm using LE2, you really just have to try them and see what works best for you.
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