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?
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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.
Related
Why does the battery on this phone drain faster standby when connected to 4g than when connected to 3g? On my nexus s, the opposite was true. Why is this phone different?
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I'm guessing the processor works harder when the device is on 4G. I don't know what the 4G sleep even does. I think it attempts to save power by sleeping if you're not using it? And the Epic Touch is known for that LOS problem. Lost of signal kills your battery because the phone is trying hard to grab some sort of signal. I don't have 4G on unless I have 4G connection and I am using it.
Every phone I've used this has been the case. Does the Nexus still work and if so could you check it it so we could learn how to save battery power?
Well I don't have a LOS problem on my epic because I never changed the kernel. I'm running stock rooted. Luckily I haven't experiences Los yet.
And the nexus comparison can't really be made because they have different hardware. It was a single core so it required less power for the CPU, as well as for the brightness (different display technology)
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Have you thought about maybe getting some extended batteries? Look on amazon.com. Samsung has a 2000 mAh on there and Seidio has a 3200 mAh that comes with a new back cover because the battery makes your phone fatter.
Thank Me Later said:
Have you thought about maybe getting some extended batteries? Look on amazon.com. Samsung has a 2000 mAh on there and Seidio has a 3200 mAh that comes with a new back cover because the battery makes your phone fatter.
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I don't have a problem with my battery life. I actually get fantastic battery life compared with some other users that are posting on xda. But my question was more of a technical one as to why 4g uses more power than 3g on this phone, when 4g used less power than 3g on the nexus s.
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hijewpositive said:
I don't have a problem with my battery life. I actually get fantastic battery life compared with some other users that are posting on xda. But my question was more of a technical one as to why 4g uses more power than 3g on this phone, when 4g used less power than 3g on the nexus s.
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Are you in a fringe signal area? Is the phone constantly moving between 3g and 4g? 4g is not as kind on the vmbattery as 3g but I did notice a slight improvement on the EK02 update
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JohnCorleone said:
Are you in a fringe signal area? Is the phone constantly moving between 3g and 4g? 4g is not as kind on the vmbattery as 3g but I did notice a slight improvement on the EK02 update
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I'm not in a fringe signal area, but even if I were, i don't think it would make a difference because i'd be comparing both phones in the exact same conditions. Thus, if all else is the same, the only variable (the only thing thats different) is the phone.
But thats good to know that the EK02 update improves it a bit. I'm still waiting for my OTA notification. Haven't received it yet :-/
hijewpositive said:
I'm not in a fringe signal area, but even if I were, i don't think it would make a difference because i'd be comparing both phones in the exact same conditions. Thus, if all else is the same, the only variable (the only thing thats different) is the phone.
But thats good to know that the EK02 update improves it a bit. I'm still waiting for my OTA notification. Haven't received it yet :-/
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I have both devices and you can't really compare the two. I have great 4g signal where I live. The Nexus has much weaker signal than Epic Touch for me. I did do the WiMax tweaks on ET4G to make it connect faster, changed timeout, and lowest signal detected so maybe that's why I am having better results. I mentioned fringe signal because if phone is bouncing between 3g and 4g, that crushes battery. PM me if you want my WiMax settings
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JohnCorleone said:
I have both devices and you can't really compare the two. I have great 4g signal where I live. The Nexus has much weaker signal than Epic Touch for me. I did do the WiMax tweaks on ET4G to make it connect faster, changed timeout, and lowest signal detected so maybe that's why I am having better results. I mentioned fringe signal because if phone is bouncing between 3g and 4g, that crushes battery. PM me if you want my WiMax settings
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John, could you guide me to where it shows us how to do the 4G tweaks? Thanks.
JohnCorleone said:
I have both devices and you can't really compare the two. I have great 4g signal where I live. The Nexus has much weaker signal than Epic Touch for me. I did do the WiMax tweaks on ET4G to make it connect faster, changed timeout, and lowest signal detected so maybe that's why I am having better results. I mentioned fringe signal because if phone is bouncing between 3g and 4g, that crushes battery. PM me if you want my WiMax settings
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lol thanks, i already did the wimax tweaks as well tho. After i noticed that it already takes more battery, i just said to myself "screw it, might as well milk it." i made my entryrx: -100, exitdelay: 7, and exitCINR: 2.
slick4mitch said:
John, could you guide me to where it shows us how to do the 4G tweaks? Thanks.
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i know you asked John, but i thought id help you out anyway lol
http://forum.xda-developers.com/showthread.php?t=1265990
hijewpositive said:
i know you asked John, but i thought id help you out anyway lol
http://forum.xda-developers.com/showthread.php?t=1265990
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Thanks! You guys are quick. I did a slight variation of settings in OP of that thread
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Mods please delete my thread in the other forum I posted in the wrong forum.
Is wireless affected by modem type?
I just started using thunderhawk and shadow kernel. Modem is still eo5. I am noticing my wifi signal is not what is used to be when I was on frozen/genocide.
Will a different modem make a difference?
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Samsung turned down the radios in Gingerbread to conserve battery. So wifi is lower in signal, gps locks on less satellites (without the fix) but 3G and 4G seem unchanged.
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Great
Anyway to turn the wifi signal up?
Not that I know of. I don't think anyone has looked at it.
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I have seen reduced wifi and 4G data throughput speeds ever since installing EI22. I don't test 3G. Multiple ROMs and multiple kernels. Seems I can get a bit of a boost in speed if I disable the slowest clock speeds on my device.
Had no such issue with EC05 SRF and Genocide.
That's my experience, anyway.
The OP was asking about wifi signal strength.
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kennyglass123 said:
The OP was asking about wifi signal strength.
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I believe they lowered the power consumption on the radios all the way around. But with wifi don't pay attention to signal bars cuz the devs or samsung change the bars between builds. Example you could have 100% signal but only show 1 or 2 bars depending on the decibal levels they have each bar set to. The only thing that is accurate is a wifi signal analyzer that shows you your signal in decibals.
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jbadboy2007 said:
I believe they lowered the power consumption on the radios all the way around. But with wifi don't pay attention to signal bars cuz the devs or samsung change the bars between builds. Example you could have 100% signal but only show 1 or 2 bars depending on the decibal levels they have each bar set to. The only thing that is accurate is a wifi signal analyzer that shows you your signal in decibals.
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I think a few people noted that they don't have the same range they had on Froyo with their wifi, comparing the same distances from the router.
kennyglass123 said:
I think a few people noted that they don't have the same range they had on Froyo with their wifi, comparing the same distances from the router.
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I would have to disagree I have analyzed my network in db's since eclair with this phone. I have identical db's in the exact same locations just less signal bars. Its all in peoples heads. So don't believe everything you read. I install wifi networks for a living and use this phone as a testing tool cuz its faster and easier than my laptop. Another thing some people don't understand is interference could be the issue of them not getting the same results. If you have 20 wifi signals broadcasting like in apartment it will degrade your signal terribily. I don't have any other wifi signals around me so my signal is constant no interference.
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jbadboy2007 said:
I would have to disagree I have analyzed my network in db's since eclair with this phone. I have identical db's in the exact same locations just less signal bars. Its all in peoples heads. So don't believe everything you read. I install wifi networks for a living and use this phone as a testing tool cuz its faster and easier than my laptop. Another thing some people don't understand is interference could be the issue of them not getting the same results. If you have 20 wifi signals broadcasting like in apartment it will degrade your signal terribily. I don't have any other wifi signals around me so my signal is constant no interference.
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Thanks for that input J.
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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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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
Hi, I'm here in Williamsburg, with updated everything (PRL, software,firmware,modem, etc) on a rooted stock MD4 ROM. And when I turn on my 4g LTE radio, because I have pretty decent coverage here in the burg, I usually get speeds of about 90-200 kbps. Since the new update of speed test, it doesn't even ping at all because of how slow it is. When LTE first reached Williamsburg I had a solid 16-24 Mbps in certain areas. Multiple people tell me its the amount of people that is throttling it but that I don't think that is logical since 3g is faster. Any ideas? Anything I'm doing wrong?
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Are they working on the Network in your area ?
Well every LTE site is technically still being "worked on" but the base LTE has been up for a while.
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Most be Network issue. Happened to me, I was able to connect to LTE, but no data or slower than 3g. I'm running Slim, so I just turned off LTE. It lasts for over a week. And I'm really far away from you, so yes must be Network issue.
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