With CM10.1?
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there is no such thing as LTE only, and i doubt it will exist until LTE coverage is more widespread. LTE also runs off CDMA, i don't know the technical information but i don't think it would save any power, compared to using CDMA only. if you want to run LTE just select CDMA / LTE and it will stay on LTE whenever LTE is avail.
if i was to turn my phone on LTE only and do my usual day of driving i would have no signal for 70% of the day, and that is driving around the GTA, which is canada's heaviest population density. so even if u happen to be somewhere where u usually have LTE, this is extremely rare that's why the mode isn't out yet.
cdma / lte priority goes as follow
4g lte - highest priority
4g - 2nd priority
3g - lowest priority
if you are looking to save battery and not performance, use 2g only for extreme battery saving, or CMDA only for moderate battery saving while still having good performance.
.... besides you couldn't make phone calls on lte kinda defeats the purpose of a phone.
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Thanks for your informative explanation.
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Swetnes said:
.... besides you couldn't make phone calls on lte kinda defeats the purpose of a phone.
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good point
Related
So, I read somewhere that 4g is more similar to wifi, indicating that 4g is better for the battery if you have good signal. But I notice the exact opposite, 4g kills my battery whereas 3g isn't SO bad. Can anyone confirm this?
sent from my touchwiz 4.5-ed epic
For me it's always been from best to worst
Wifi, 3g, 4g.
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I use 4G frequently while at work. I obviously don't use my phone as much while I'm at work as when I'm not, so it's tough for me to get a good comparison.
It does seem to me when downloading bigger items, like ROMs, 4G will take up more battery than 3G even though it will certainly take longer on 3G to accomplish the same thing.
And for what it's worth, I do get a good 4G signal while at work too, so it's not like it's bouncing back and forth between 3/4G.
From my own personal experience;
Wifi>3G>4G
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Wifi>3g>4g here as well
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jeffro18 said:
Wifi>3g>4g here as well
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Same... 4g def kills battery quicker
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Imho I think it is modem/kernel/ rom related. I certianly think there was a period that wifi was sucking the life from my phone and 4 g was sipping. Presently I think I am doing 3g>wifi>4G...but I have seen this flip arround on diferent versions.
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Eclair: wifi > 3g > 4g*
Froyo: 3g > wifi > 4g*
Gingerbread: 3g > wifi > 4g*
*Was only available when I traveled to a city with it. Closest was ~400+mi away. Lame, I know. Stupid Sprint.
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Thanks for all the replies (literally). I've seemed to notice exactly what your saying though, I was just wondering because I heard somewhere 4g drains less battery in high signal areas. I usually get 2/3 4g bars, so id say mine is ok, but it definitely drains faster than 3g
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It doesn't make much of a difference for me. Probably though because my school is so close to a 4G tower? I mean I can literally see it.
4G is a seperate radio so would require more power. 3G is tied to the CDMA radio. Wifi uses almost no power when connected. So I get days of standby on weekends at home on wifi.
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kennyglass123 said:
4G is a seperate radio so would require more power. 3G is tied to the CDMA radio. Wifi uses almost no power when connected. So I get days of standby on weekends at home on wifi.
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Funny, my device gets the opposite with 3g vs wifi. My sleep policy is set on 'never', but wifi has drained the hell out of my batter since Froyo. It's nearly as bad of a drain as 4g, when I was in a 4g area to test.
+1 and also since froyo. How I long for the wifi battery sipping days.
nikon120 said:
Funny, my device gets the opposite with 3g vs wifi. My sleep policy is set on 'never', but wifi has drained the hell out of my batter since Froyo. It's nearly as bad of a drain as 4g, when I was in a 4g area to test.
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4g spectrum runs at a higher frequency rate than 3g. Therefore, 4g will drain ur battery a lot faster, especially if u have weak or weaker signal strength. Wifi, is low aplitude frequency rate, meaning..it an open frequency , therefore, does not require much power for high speed. 3g is moderate frequency rate. Just to clearify..3g and 4g are cdma, depending on carrier. Support information regarding can be allocated at www.phonescoop.com
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androidmaster1 said:
4g spectrum runs at a higher frequency rate than 3g. Therefore, 4g will drain ur battery a lot faster, especially if u have weak or weaker signal strength. Wifi, is low aplitude frequency rate, meaning..it an open frequency , therefore, does not require much power for high speed. 3g is moderate frequency rate. Just to clearify..3g and 4g are cdma, depending on carrier. Support information regarding can be allocated at www.phonescoop.com
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I have no doubt you are technically accurate and it could be the implementation and how they are managed. If I take a full battery and leave one of these on at a tome...as of stock froyo (I think some roms may have had different results) and all gb 3g certianly is usong about half the battery being used as 4g and wifi consistantly uses more.
Sammy should talk to u guys n get theeir sheit fixed.
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Djinn23 said:
I have no doubt you are technically accurate and it could be the implementation and how they are managed. If I take a full battery and leave one of these on at a tome...as of stock froyo (I think some roms may have had different results) and all gb 3g certianly is usong about half the battery being used as 4g and wifi consistantly uses more.
Sammy should talk to u guys n get theeir sheit fixed.
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it also has to do with power time managment in the kernels. i discovered that between the different kernels i have tried and xda. you just have to play with the different roms and kernels and see which gives you better results.
How do I do this?
If its possible. It would let me use data and limit the amount I use while at work lol
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settings/mobile networks/network mode/gsm only....
badaphooko01 said:
settings/mobile networks/network mode/gsm only....
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Considering youvr now become my personal hero of all time. I have another question. Is there a significant battery drain difference?
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wetrabbit444 said:
Considering youvr now become my personal hero of all time. I have another question. Is there a significant battery drain difference?
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While I am not sure directly how much impact there may be I would expect you to see a different, the "4g" (read: 3g enhanced) is a large drain on the battery.
Also the EDGE network is a lot more well distributed across the country which means your phone would potentially spend a lot less time searching for the proper signal. I notice at home my phone swap between the 4g and E icon for short periods at times, which means it's also draining battery swapping between signals.
Of course this isnt an issue at home since I just have wifi on, which also kills my data connection when wifi calling is enabled.
15 hours on 4G vs 40 hours on 2G for me
Nice.
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I am not in an LTE market (yet), and I'm not likely to get LTE for another 3 months at least. If I switch from CDMA/LTE to CDMA in the Mobile Networks / Network mode settings, will I be saving battery?
Only one way to find out papi
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sparhawk6 said:
I am not in an LTE market (yet), and I'm not likely to get LTE for another 3 months at least. If I switch from CDMA/LTE to CDMA in the Mobile Networks / Network mode settings, will I be saving battery?
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I have read that you can expect minor improvements. That seems to be the consensus with Galaxy Nexus anyway.
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Yes, not sure how much exactly, but turning off LTE will save battery.
The Sprint Zone app gives suggestions for saving battery life, and turning off LTE is one of them.
Someone said in another thread that it didnt make any difference. So, I dunno?
What about running in automatic mode?
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dkkeo said:
I do not understand
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If that was to me, my network settings menu has a 'automatic' setting.
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Not positive it was related but my phone wouldn't boot after I changed it to CDMA from CDMA/LTE.
how do you guys turn off 4g
Both the battery working so good and long I would ask you this:
Why?
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just wanna test 3g of tmobile
i do have unlimited 4g
mrej201 said:
just wanna test 3g of tmobile
i do have unlimited 4g
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4G and 3G are not actually different for Tmobile.
Wikipedia article on Evolved HSPA
So then, the question is how to turn off DC hspa. Which is probably not accessible through the maintenance menus.
But for many real world value metrics I don't know what you would gain.
Get the app called phone info
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I think there's an app for that. I forgot what its called but I think the toggles are Edge or HSPA+ umts only
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Phone info
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I'm wondering if the OP came from Sprint? Sprint's 4G was a separate (battery sucking) radio that you could turn on and off and needed to in order to protect the battery usage.
4g on TMo isn't like LTE, it's not a separate modem to turn off like AT&T, VZW, or sprint. It's really a hopped up version of 3G. Your choices are 3G/4G or Edge.
mrchris1234 said:
I'm wondering if the OP came from Sprint? Sprint's 4G was a separate (battery sucking) radio that you could turn on and off and needed to in order to protect the battery usage.
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yea i did came from sprint that y i ask but thanx for the app guys
I occasionally see a G. Not sure what that is...
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DarthPiggie said:
I occasionally see a G. Not sure what that is...
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That is the 2G service.
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mrej201 said:
yea i did came from sprint that y i ask but thanx for the app guys
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On T-Mobile, there is no real differentiation between 3G and 4G. Both operate on the same spectrum. The only difference is the speeds. However, that is controlled, not by your phone, but by the tower you're connected to. It's easier to look at it as the same exact technology. For the purpose of this conversation, there is no more T-Mobile 3G. It's all 4G, or HSPA+, service now. The 3G brand has been retired in favor of the 4G moniker.
To put it all simply, 3G is the same as 4G on T-Mobile. To turn off 4G, you would drop down to 2G, or EDGE/GPRS, service.
cajunflavoredbob said:
On T-Mobile, there is no real differentiation between 3G and 4G. Both operate on the same spectrum. The only difference is the speeds. However, that is controlled, not by your phone, but by the tower you're connected to. It's easier to look at it as the same exact technology. For the purpose of this conversation, there is no more T-Mobile 3G. It's all 4G, or HSPA+, service now. The 3G brand has been retired in favor of the 4G moniker.
To put it all simply, 3G is the same as 4G on T-Mobile. To turn off 4G, you would drop down to 2G, or EDGE/GPRS, service.
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And if you still want to do it.....go to settings - more settings - mobile networks - network mode and you can select "GSM only".
Strangely enough....there are a couple areas around where i live that my phone will show a 4G connection and absolutely refuses to open anything. I've found that if i switch to the "GSM only" option in those areas that at least i can get it working... slowly, but better than nothing.
Had the same issue with my previous phone. (G2) weird phantom 4G zone. :-/
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if you see I took them 1minute apart see the difference is that right or to slow
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blake25 said:
if you see I took them 1minute apart see the difference is that right or to slow
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LTE is super spotty where I live and really inconsistent. In my state capitol I get LTE and it's around 2mbs. I alternate between 3g/LTE from block to block with 100% signal strength on stock rom. In some hicktown with a population of 1,000 people LTE gets 20-30mb/s. Regarding Sprint, you are lucky to get LTE at all, I'd be happy.
ATT HSDPA+ gets 1-3mb/s everywhere in my state. I'll be changing soon.