First of all: currently I'm on PE A11, but was using MIUI for quite long time and can say that high battery usage while using mobile data is almost the same on both ROMs.
I see that people more and more often mention locking LTE bands, but only in terms of internet speed... But what if I'm good with my current speed, but not satisfied with battery usage? Does locking to specific LTE band(s) that I'm in range of will improve battery life? Or it only helps in increasing internet speed?
Considering my mobile provider's data I'm in range of LTE.
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As you may know desire has a built in feature that monitors when you do need 3g connection and when not, so when you do not need it it automaticly switches to 2g. I have also read somewhere that this feature consumes less battery then being always on 2g. Is that true? I still heard a lot of people that are most of the time on 2g while they do not browse the internet, reporting decent battery lives.
So, as the title says, which is better?
2g uses less battery than 3g. Use 2g when not using data for the best battery life.
Whoever said that 2g and sometimes 3g uses less battery that 2g only needs to go back to school, its mathematically impossible if 3g uses more battery.
Sent from my HTC Desire using XDA App
lvnatic said:
As you may know desire has a built in feature that monitors when you do need 3g connection and when not, so when you do not need it it automaticly switches to 2g.
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are you completely sure about that? my phone seems to be always in 3G as long as it is available and switchs to 2G if it cant get a 3g connection.
anyway, 2G is the best option battery wise.
there is a video from google i/o 2k9 talking about this. I think it's this one : http://developer.android.com/videos/index.html#v=OUemfrKe65c
I have used both modes for some weeks, but i didn't see any difference.
http://forum.xda-developers.com/showthread.php?t=688492
How about this? Does it apply to desire as well? I am curently using gsm only when im not browsing the net.
2g only will use the least battery.
Auto is great but the issue is that it will preferentially seek 3g. To seek 3g more power is required. (Now this is a negligible amount on its own). However if comparing the battery use in only a 2g area the 2g phone will last longer.
Sent from my HTC Desire using Tapatalk
if you have signal i recommend to use 3g. the cells needs more power to have/transmitt fast data connections like hdspa and in that case the cellphone need less battery to connect to it. in Romania the network it's kinda new hardware, because we use cellphones later than anyone else and the tech was envolved when we first install the network, but remember if your cellphone go from 2g to 3g often, this will consume a lot of power.
Robert A said:
if you have signal i recommend to use 3g. the cells needs more power to have/transmitt fast data connections like hdspa and in that case the cellphone need less battery to connect to it. in Romania the network it's kinda new hardware, because we use cellphones later than anyone else and the tech was envolved when we first install the network, but remember if your cellphone go from 2g to 3g often, this will consume a lot of power.
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So you recommend wcdma only? Even when I don't use the internet? Its true that I have signal most of the time, but I am on "gsm only" all the time, switching to wcdma only when I browse the net.
I would recommend GSM auto (PRL) from the testing menu ( *#*#4636#*#* ) then in phone information. Your phone will still use 3G but only when the signal is strong. Otherwise it will prefer 2G.
WCDMA preferred will try to force 3G even when the signal is weak. Consuming more battery.
Sent from my Desire HD using XDA App
2G only uses the least power.
3G only uses moar power.
Constant switching uses the most, it peaks at 600mA battery drain in the process.
3G only will only give you signal outages, therefore I would not recommend it. It is not widespread as GSM signal is.
Oh I finally know how to acces PRL options, thanks. But regarding this, I found this thread on the nexus one section, which says wcdma prl is better. Any of you know how accurate that is?
Edit:
sheek360 said:
He mentioned that gsm auto prl will save the user a bit more power because it wont force the phone to continuasly hunt for a stronger signal. Typically this option gives our n1's a weaker signal and slower data speed. But he said it depends on our network in our city.
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Nvm, it wasn't battery related anyway. And I found what I needed. Thanks a lot.
Im back to gsm only, gsm auto prl didn't seem to be better in terms of battery saving.
since there were mods to overclock cpu and even underclock the voltage to the screen of my atrix i was wondering if it would be possible to overclock the voltage of the galaxy nexus radio to give better reception? this would be a great mod for this phone since it does have a pretty weak radio. i've aready tried flashing all the gsm radio but none made any major difference. the reception on this phone is seriously lacking when in a low reception area compared to my atrix, even my LG optimus p500 gets better reception.
The phone does this automatically when you have low signal. And it destroys your battery.
joshnichols189 said:
The phone does this automatically when you have low signal. And it destroys your battery.
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it doesnt do it very well then. i live in a low reception area so i usually look for a phone with a good radio. most phones that i've used didnt have a problem with my area i just didnt get a full signal strength but the galaxy nexus is constantly switching between 2g and 3g. i also see that my time without signal is around 20%. Time without signal on my atrix and P500 is 0 in the exact same area using the same network.
always switching between 2g/3g and dropping and reacquire the network kills the battery too so i would rather destroy my battery and have good reception than destroy my battery with low reception. im sure there are others with my problem and wouldnt mind using a little extra battery juice for this.
Use an app like Tasker or Llama to switch your phone to 2g when at home. Then it won't spend all it's time searching and getting nothing 20% of the time.
You can try the newer bootloader if all else fails.
neotekz said:
it doesnt do it very well then. i live in a low reception area so i usually look for a phone with a good radio. most phones that i've used didnt have a problem with my area i just didnt get a full signal strength but the galaxy nexus is constantly switching between 2g and 3g. i also see that my time without signal is around 20%. Time without signal on my atrix and P500 is 0 in the exact same area using the same network.
always switching between 2g/3g and dropping and reacquire the network kills the battery too so i would rather destroy my battery and have good reception than destroy my battery with low reception. im sure there are others with my problem and wouldnt mind using a little extra battery juice for this.
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You're not understanding. When the phone is dropping between 2G and 3G it is only acquiring 3G because it is pushing more power to the radio. You won't get a different result.
Sent from my Galaxy Nexus using xda premium
I really feel that a small detail needs to be pointed out:
over/under-clocking - relates to the CLOCK speed - expressed in MHz (megahertz)
over/under-volting - relates to the VOLTAGE used - expressed in mV (millivolts)
The two terms should not be interchanged, as they are quite different. You can't overclock a voltage anymore than you could undervolt a frequency.
neotekz said:
since there were mods to overclock cpu and even underclock the voltage to the screen of my atrix i was wondering if it would be possible to overclock the voltage of the galaxy nexus radio to give better reception? this would be a great mod for this phone since it does have a pretty weak radio. i've aready tried flashing all the gsm radio but none made any major difference. the reception on this phone is seriously lacking when in a low reception area compared to my atrix, even my LG optimus p500 gets better reception.
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After flashing a north American radio I can say that I was quite surprised at how much better reception became. Don't forget that the atrix is a branded phone. The reason I mention this is you might be in a congested area. Saturated with iphones. Iphones get preferential treatment on atnt's network and I wouldn't be surprised if "4g" branded phones get priority over unlocked phones. The proof for me was during the holidays last year. Congestion was gone so reception and speeds were phenomenal compared to what I am used to. My expectations are realistic, so I am satisfied with how well nexus does. I am not satisfied with atnt's business practices, policies and customer service though. Atnt could do a lot better.
Sent from my Nexus in Texas.
So i was using my HSPA galaxy nexus on Rogers network in Canada for about 7 weeks, and getting quite excellent battery life (~36hours of how i use it).
I have now switched to Telus, and for the same locations and use, i'm lucky to get 20hours out of it after 2 weeks. Same phone, same software, same amount of time on wifi, etc.
looking @ the battery stats, i guess the mobile standby is higher, but not stupidly high.
Has anyone else noticed this? I know there are differences based on idle timers in the radio network etc, but i'd really like to be able to do something about this. And unfortunately moving back to Rogers is not an option I have.
Rogers has 2g network, Telus does not. When you're using wifi, you don't need rogers' data so you're on their 2g network + wifi. With telus, you have no network to fall back on = 3g + wifi. Hence, more battery drain.
Just and observation on LTE and battery life if you are in an area that has been refarmed to get LTE but may not have the strongest signal for it yet.
I get constant LTE signal wherever I go in Baltimore. Download speeds are great. But the signal isn't super strong yet. So my phone does a lot of pinging the towers to stay connected. That is the yellow signal in my battery graph. This causes a decent amount of battery drain while the phone is asleep.
But 3G signal is great. That is the green line in the battery graph. You can see that when I switched to 3g (or HSPA as it really is) the battery drain while idle reduced dramatically.
So if you are in an area like this and you really need the battery to last longer, put it on 3G and it should help a lot. At least until T Mobile increases the LTE coverage, which I am sure they will.
And for when you need the LTE speed, I have an LTE button on my quick settings panel to activate it so I still get the speed when I need it, but not the battery drain when I don't. (Note, I'm using cm10.1 rom. I am not sure if the TW roms have that quick setting button available. But it can be done in settings.)
This option is not for everyone. But if you are not a heavy data user like me it might be great for you.
Sent from my SGH-M919 using xda app-developers app
Skipjacks said:
Just and observation on LTE and battery life if you are in an area that has been refarmed to get LTE but may not have the strongest signal for it yet.
I get constant LTE signal wherever I go in Baltimore. Download speeds are great. But the signal isn't super strong yet. So my phone does a lot of pinging the towers to stay connected. That is the yellow signal in my battery graph. This causes a decent amount of battery drain while the phone is asleep.
But 3G signal is great. That is the green line in the battery graph. You can see that when I switched to 3g (or HSPA as it really is) the battery drain while idle reduced dramatically.
So if you are in an area like this and you really need the battery to last longer, put it on 3G and it should help a lot. At least until T Mobile increases the LTE coverage, which I am sure they will.
And for when you need the LTE speed, I have an LTE button on my quick settings panel to activate it so I still get the speed when I need it, but not the battery drain when I don't. (Note, I'm using cm10.1 rom. I am not sure if the TW roms have that quick setting button available. But it can be done in settings.)
This option is not for everyone. But if you are not a heavy data user like me it might be great for you.
Sent from my SGH-M919 using xda app-developers app
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How do I put it in 4gHSPA +
Awesome advice
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thetbg said:
How do I put it in 4gHSPA +
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There are many apps in the Play Store that allow you to do that.
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Never thought to have data go to 3g and lower.. I've always used tasker to disable... no off screen email but I go in and manually check it anyways so it works for me. I get 2.5 hours out of 1 percent when my device sleeps.
Thinking of getting either one of these phones.
My question is about battery consumption. Is there a significant diffirence in battery consumption, pressumably the "L" version sucks more power... or are they the same ? Thanks
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Edit:
Pressumably the LTE version sucks more juice, if I disable LTE and connect to WCDMA, will both phones consume the same amount of juice on WCDMA?
xdm9mm said:
Thinking of getting either one of these phones.
My question is about battery consumption. Is there a significant diffirence in battery consumption, pressumably the "L" version sucks more power... or are they the same ? Thanks
=
Edit:
Pressumably the LTE version sucks more juice, if I disable LTE and connect to WCDMA, will both phones consume the same amount of juice on WCDMA?
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I got more battery life in T999L version tbh...
I also don't notice much of a difference between WCDMA and LTE power consumption. As long as the connection is stable and not switching back and forth.
The biggest cause of drain with regard to your mobile data connection is the signal strength. The weaker the signal, the more juice it uses for the connection. While idle it doesn't matter a bit though.
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