Ever since November update, 5G drains battery at a rate of ~2-3% per hour. The "Mobile network" would go up to 90% battery consumption in Battery usage in Settings while the device is idle.
Before November, the phone would consume 0.5% per hour while idle.
After November, if you turn off 5G in settings and use LTE, the phone would consume 0.5% per hour while idle. The "Mobile network" would now consume less than 40%.
So it's clear that 5G is solely responsible for the accelerated battery drain.
The 5G signal strength is ~ -90 dB, while LTE signal strength is ~ -100 dB from About phone/Sim status in Settings. And yet the connection bars show about 20% full when connected to 5G, while they show about 80% full when connected to LTE.
These observations make me think that the November update introduced some kind of a bug which makes the phone think that the 5G signal is extra weak, which results in constant switching between LTE and 5G.
Does this sound about right? How can this be fixed w/o disabling 5G?
Thanks.
Just checked another phone, Galaxy S22, connected to the same network. It shows the same decibels -95 for signal strength, yet it shows full bars, but my phone shows almost no bars.
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As someone who is very happy with the battery life of my Tilt2, I have spent
the weekend in an area where 3G is not available and was wondering if all the
reports of poor battery life are the result of being in an "edge" area and the phone constantly searching for a 3G signal?
When I hit the sack at night in a 3G area, battery 100%, weather checking every 30-45 minutes, in the morning, it might drop to 98 or 99%, but the last
two mornings, in an edge area, the battery is down to 65-70%.
Like I said, I never worry about battery life, since most of the time I'm in a 3g(H) area, but wouldn't turning off the 3G radio extend battery life?
p51d007 said:
As someone who is very happy with the battery life of my Tilt2, I have spent
the weekend in an area where 3G is not available and was wondering if all the
reports of poor battery life are the result of being in an "edge" area and the phone constantly searching for a 3G signal?
When I hit the sack at night in a 3G area, battery 100%, weather checking every 30-45 minutes, in the morning, it might drop to 98 or 99%, but the last
two mornings, in an edge area, the battery is down to 65-70%.
Like I said, I never worry about battery life, since most of the time I'm in a 3g(H) area, but wouldn't turning off the 3G radio extend battery life?
Click to expand...
Click to collapse
Yes, indeed. If you turn off 3G you get better battery life.
Hi.
So now my father's phone appears to drop about 70% in 24 hours. The sad thing is it happens with no usage at all!! In fact the Wi-fi, mobile data, GPS, bluetooth were already disabled, brightness set to nearly-minimum and SetCPU to ~300MHz.
I checked the battery usage and this is what I found:
41% Cell standby (time without coverage 0%)
37% Phone idle
...
What should I do? I fail to believe that battery is suddenly so poor because not too long ago it, according to my father, it could stay for like 3 days.
ROM is quite old CM7.
Low coverage area? Phone will constantly search for stronger signal. Last week I was on top of 21 story building with poor signal all day, bursted through my battery easily in 4 hrs.
prananas said:
I fail to believe that battery is suddenly so poor because not too long ago it, according to my father, it could stay for like 3 days.
ROM is quite old CM7.
Click to expand...
Click to collapse
I believe that batteries can sometimes go from good to bad almost instantly than gradually. So I'm really not surprised that the battery runtime went poor all of a sudden.
Hi
This has happened a few times now when my phone is in a place with barely and quite often no mobile signal, always the same place, same building that is in a bit of black spot. On coming back to the phone after an hour or so I've lost 40-50% of battery power, and of course the phone is warm because of the more rapid drain of power. It is the warm phone that alerts me that I've probably had a massive battery drain event again, turning on the phone shows no service, the service comes back fine as I walk away from the building. This rapid drain event never happens elsewhere, but then normally I'm getting a decent signal everywhere else.
The battery chart shows the drain clearly, and as soon as the phone is back in a decent signal area the drain immediately stops and is back to normal battery usage apart from having lost half of its power.
The battery usage shows the phone was hardly sleeping for the duration of time in the low/no signal area, presumably kept awake by the radio chip constantly reporting no signal or something like that.
I'm using the stock ROM in Europe on Vodafone, software version 1.29.401.11.
Surely it isn't normal for the radio chip to cause so much battery drain in a no/low signal area, where is it trying to reach for a signal, Mars? :cyclops: My other smart phones same carrier in the same place with the same no signal situation were absolutely fine and didn't do this.
Interestingly the cell power usage percentage doesn't increase for this problem, so while the cell power usage is half the battery when this event occurs, this doesn't register in the cell power usage percentage, or anywhere else for that matter, just the overall chart takes a dive down.
Perhaps this issue explains variable battery life some are experiencing if they are in or travel through areas of poor or no mobile signal. Something isn't quite right with the way the radio is dealing with this situation, hopefully fixed in the next update.
Regards
Phil
Same thing is happening with my 1X. I'm working in such a building too for the last couple of weeks, it's very annoying.
I'm also on Vodafone from the Netherlands
Sent from the HTC HD2
On Vodafone in the UK and also get bad drain when signal is poor. Signal does affect battery drain though.
Same when the phone is resting in a low wifi signal with wifi on: massive battery drain in that case. Extremely annoying!
Hi
I've updated my One X with the newest RUU that contains the latest radio 2.120, this is a stock ROM for European unbranded phones and installs without needing a rooted phone.
This radio was pushed to some places in Europe last week I believe but we haven't had it in the UK.
I'll see how it goes, but it is very annoying and certainly not right for a low/no signal to drain the phone so quickly.
Regards
Phil
I have this problem.
on my Note 2 LTE( N7105)
with
Wanamite V1.1 Rom
Perseus 33.4 kernel
I have got VERY good battery on Wi-Fi.
idle consume like 1% per hour or even 1% per 2 hours.
When using it mildly. texting in whatsapp, web browsing, RSS(feedly), NINE, XDA and other stuffs
battery can easily do 25hrs+ with 5hrs+ screen on time in one charge.
Very very pleasing result. at least to me.
But with LTE or HSDPA+ is a total different story.
doing the same stuffs. either with LTE orrunning with WCDMA only(disable LTE )
The battery life is horrible.
idle consume 1% in maybe 15-20mins, which means 3-4% per hour.
with roughly 3 hours screen on time.
I'd be lucky if the battery can last for 10 hours.
usually from 100% to 1% only take around 9 hours.
what's up with that? I used Galaxy S, S2 and Note.
I know LTE or HSDPA+ eats more battery than Wi-Fi. This is a fact that I know of.
But the difference nothing close to Note 2 LTE.
on my previous Note 1. HSDPA+ only consume like 20-30% more battery than Wi-Fi at idle.
Now on Note 2. it's more like consuming 300-400% more than Wi-Fi at idle.
what's up with it? anybody knows?
I am pretty sure it's not wakelock problem. I checked BBS, they all look good.
Also I disabled ALL app's notification like XDA.
Google current only sync when Wi-Fi is connected.
background sync on. (mainly for facebook, gmail, calendar, gtask, whatsapp.)
I disabled latitude, gtalk, not update/report my current location and stuffs.
The bottom line is on Wi-Fi the battery life couldn't make me happier.
I only wish I could have at least 60-70% of that battery performance on mobile network.
Hello.
I'm using nexus 7 2013 lte for a couple of weeks and i experience some troubles that quite bother me. Device is running android 4.4.2 installed OTA.
First of all, battery drain in sleep mode is kind of unpredictable. At night (8-9 hours to be exact) device can consume 3%, 5%, 15 or even 20. My first thought was to check installed third-party apps which could cause it. But i didn't manage to find the reason of the problem, the statistics of battery looks OK, tablet can work fine for a couple of days, and then same thing occurs. I found no dependance to 3g and wifi on/off: there can be 3% for night when device is just left with wireless connections, and there can be 10-15% with airplane mode on and precursory reboot. Battery drain happens only in sleep mode, and battery times are absolutely normal on heavy tasks (10 hours of 720p video, 3:45 of gaming). The other device I use works just fine with same apps installed, same settings and cellular carrier: consumption on idle is low and constant.
Some weird jumps in battery level also can be noticed: from current level to 100% and back on: example 1
example 2
No chargers or usb were connected, temperature around was constant. Can't find any reasonable explanation to these jumps.
So should I suspect that my item has any hardware faults of battery, or there can be some software issues?
And another minor question: how good should be wifi reception on nexus? The "other device" I mentioned above (which is galaxy note 2) has solid, good level and speed of connection, while nexus seems quite worse on this subject. For example, in the room where I am at the moment, note has 3/4 bars in wifi symbol and fine, constant speed, and nexus has 1 or 2 bars of 4, and connection looks pretty laggy.
Thanks in advance for any response.
Try factory resetting and testing sleep mode battery consumption again without installing/touching anything. If its a hardware problem, it will happen again. Wifi reception should be the same or better then note normally, but as i said, factory reset and try, if the problem(s) persist, its a hardware problem.
Those battery graph peaks were still present last night.
I've just performed factory reset, will see if it changes behavior of my device.
Thanks!
So, after factory reset on pure system without any non-stock apps I got these results:
Battery consumption on idle was usually between 1 and 1.5% per hour. There was a little of instability (marked red on the screenshot), but just a little. Nothing like sudden 15% per hour that used to happen before. Is 1.5% good enough for sleep mode on stock firmware with 3g(not lte, 3g) and wifi turned on?
No jumps to 100% were noticed during these 24 hours, but they didn't happen every day. They worried me most, so I'll continue to check if they occur again. Hope they disappeared after factory reset.
As for the next step, I gonna install my usual apps and see if it affects battery perfomance.
By the way, about wifi reception: it still had 1-2 bars where galaxy note has 3-4. But then I ran some speedtests, and connection speed on nexus was usually significantly faster then note's. So wifi works just fine, it is just a matter of wifi icon calibration.
For a bit my batt life was suffering. I found it worked to turn it off, charge it fully, and then turn it on again. I actually wanted to know if there r any good task killers for it?