The main reason for very high idle drain for an Exynos S20 comes from the 4/5G modem, which when having a weak mobile network signal drains the battery for some reason.
I have heard someone say it has a faulty driver or something, and so I was wondering if it is governed by a separate kernel, driver or ROM-like software?
If yes, would it be possible to modify it in such a way that would reduce idle drain with weak signal?
Related
I've noticed that the battery drains much faster on 3G/4G than Wifi. What i've read is that wifi uses more battery than 3G and 4G uses the most. I don't find much difference between 3g/4g and find much better battery while on wifi.
please advise.
thanks.
wifi uses way less battery than either 3g or 4g.
The battery life will depend on the signal strength of your 3G or 4G connection. This does not always equate with the number of bars. (Settings=>About phone=>Status=>Signal strength) A reading of -90 dBm is better than -109 dBm. Being inside a building vs outside will give you different readings as well. You are likely to get a stronger signal outside in the open than inside an inclosed space. The weaker your 3G/4G signal, the more power required to sustain the connection. Your WiFi signal (assuming it's strong) will help conserve your battery better than a weak 3G/4G signal.
Its commonly known that wifi indeed uses much less battery life that 3g. Wifi latency and speeds compensate and you get much longer battery life using wifi rather than 3g. So use wifi whenever possible.
You even see manufacturers rated specs confirm this. Look at apple's specs for iphone, they give higher times on wifi than 3g. And anandtech tests confirm this with every handset they test.
Well, I just purchased a Note 2 and am still in the "evaluation phase". I really do like the phone, fast, amazing battery and awesome signal. However I am asking this because I ama wondering if I am getting all that I can be from my Galaxy Nexus before I decide to keep the Note 2 for $700+.
For reference I have recently been using the Euroskank CM10.1 releases with Franco's newest kernel and undervolting CPU to approximately the values in the LeanKernel Aggressive Undervolt levels as well as knocking down all IVA and CORE voltage 100mv.
I can generally stretch the Nexus' battery life to 13 or 14 hours, but that's with <2 hours of screen on time. If I am using it a lot 8 hours of battery life is lucky, if not less. This really isn't with any gaming or using it for listening to anything, just genrally Facebook and the internet. I do leave LTE on even though at work I can only get 3G. I have turned LTE off before but honestly I have never seen an increase in battery life from doing so. This goes to signal issue also, at work it will go to 30% or more time without signal and Cell Standby will be the second highest use of battery. I have a refurbed unit from Asurion that is version 10 and using the latest radios for CDMA and LTE. The Note 2 in the same usage environment reported 0% time without signal and Cell Standby was way down the list of power usage.
So, basically I am wondering, am I getting everything out of the Nexus that I can, or should I be getting better numbers. Maybe some of you on here can verify that the Note 2 is actually better for signal etc. or that I am just being delusional. Thanks in advance to all of you!
EDIT: Oops, meant to put this in the Questins section, accidentally put it here, Mods, please move!
No one?
Seriously? Even a piss off would be nice to hear, lol.
My signal is fine, my battery life is like yours (<2hr screen on) even with the OEM ext battery.
WiredPirate said:
My signal is fine, my battery life is like yours (<2hr screen on) even with the OEM ext battery.
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Thanks for the reply, good to hear my battery life isn't out of the ordinary. Signal does seem bad on mine though, I am going to call Asurion as this one runs unusually hot, uncofortably hot to hold even.
Yeah, mine gets fine signal, though the current radio firmware that came with the 4.1.1 OTA seems to have a problem hanging onto LTE signal indoors. I'm sure it'll get fixed in the next OTA (hopefully to 4.2.1). As far as battery life, it's what you would expect from an LTE phone...about 2.5 hours of screen-on time, maybe 3 if you're really lucky. Battery life can be affected by so many things like apps you have installed, screen time, cell signal, etc.
One thing I'll tell you, though...you'll find your battery life go up by at least 30% by keeping it connected to WiFi. If you're on a cell connection, your battery is going to zap a lot faster because as a matter of principle, cell modems are far more power-intensive than WiFi is because WiFi is a much shorter-range technology, thus the transmitters don't have to put out nearly as much power. Also, if not connected to WiFi, weak cell signals are going to drain your battery even faster than a stronger signal.
But, as long as you keep the phone on WiFi when you can, you'll find the battery life is no better or worse than most other LTE phones.
sesdevel bordure
With WiFi, easily 15 hours with ~2 hours screen time. With LTE enabled, usually around 6-8 with ~1.5 hours of screen time. I also get pretty bad signal around my city.
oldblue910 said:
Yeah, mine gets fine signal, though the current radio firmware that came with the 4.1.1 OTA seems to have a problem hanging onto LTE signal indoors. I'm sure it'll get fixed in the next OTA (hopefully to 4.2.1). As far as battery life, it's what you would expect from an LTE phone...about 2.5 hours of screen-on time, maybe 3 if you're really lucky. Battery life can be affected by so many things like apps you have installed, screen time, cell signal, etc.
One thing I'll tell you, though...you'll find your battery life go up by at least 30% by keeping it connected to WiFi. If you're on a cell connection, your battery is going to zap a lot faster because as a matter of principle, cell modems are far more power-intensive than WiFi is because WiFi is a much shorter-range technology, thus the transmitters don't have to put out nearly as much power. Also, if not connected to WiFi, weak cell signals are going to drain your battery even faster than a stronger signal.
But, as long as you keep the phone on WiFi when you can, you'll find the battery life is no better or worse than most other LTE phones.
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Well the Note 2 destroys the Nexus in battery life and signal reception to be honest, but then again a 3100mAh battery should. I like the Nexus and I am trying to get myself to keep it over the Note because having AOSP rocks and so does saving like $850.
Hey,
when I use 3G I get about 2H of screen time,
and when I use WiFi I get about 4H (max).
My usage is WhatsApp, Browser etc..
Is it normal that I'm getting half of the time with 3G?
Can it be fixed with another baseband?
Any help?
3G uses more battery since it's also searching for better connection all the time(unless you choose 2G only in mobile network options, then you get better battery but speed is not so fast anymore).
I can confirm that a weak 3G connection gobbles up battery charge very quickly. This is a flaw in the radio firmware or perhaps somewhere else. Of course the phone should switch to 2G automatically when 3G is not used intensively, but uses excessive amounts of electricity, but the designers apparently overlooked this.
Your main option is, as already mentioned, to do the thing manually that your phone fails to do automatically—force 2G only.
If you do that, don't forget to disable the force-2G option again when (a) you need the higher speed and the connection is good enough for that, or (b) if you moved into an area with better reception, like 3 or 4 bars.
Alternatively, leave the settings untouched, i.e. 3G enabled, and keep charging the phone if you are stationary and have electricity nearby. You can charge from a computer, albeit at half speed.
I almost always have 3/4 bars, so I don't think I have a connection problem.
Hello guys,
Can you tell me why H+ is draining the battery so much. When I am on 100% if I turn it on even with no device usage the battery drains very fast.
If i switch to Edge it is not that bad. It drains about 10% for 8 hours.
Thanks.
I think its kernel or something not been optimized, on h+ i always get 3% drain per hour sync on/off, gps on/off, grenefy, debloated or no matter what i do it always get that drain, only on edge or wifi I have the best battery, i could turn data off and have no draint but whats the point, so im stuck on 3g
You will find this happens with every phone. 3G uses more power for the increased bandwidth.
Try ensuring that there are no background processes using data - that is usually a big battery drainer
This is my usage.
Whosat said:
You will find this happens with every phone. 3G uses more power for the increased bandwidth.
Try ensuring that there are no background processes using data - that is usually a big battery drainer
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It's not due to bandwidth, it's due to the frequencies. It takes more battery to communicate on 2100mhz as it does 900 or 1800 for edge. (obviously 1800 for Ee)
Sent from my GT-I9505 using Tapatalk 2
Does anyone yet know how 5G will affect the battery life compared to 4G?
The phone would now not only seek for a better 4G signal tower but also for a 5G cell tower?
As far as I understand:
Adaptive connectivity should disable/enable 5G based on usage
That means with "screen off" I will hopefully not suffer from higher battery drain due to constantly trying to get a good 5G cell tower
5G uses more power due to its higher performance. But is only when actually using 5G (e.g. massive downloading)
When there is weak 4G signal, I might actually have better signal due to 5G availability
Is that correct?
Yeah, I think you're correct.
At 100% charge before turning in for the night, wifi connected, I lose about 2% at night.
I'll have to turn wifi off to check the drain at night for 5G/4G, but I believe the adaptive
band switching helps the battery life. I think even though it says 5G, it runs 4G unless you
really need the bandwith, and, are in range of a 5G signal.