Hi there just thought I could get a 2nd opinion on this matter wich is when ive been lookin round on google and I had a look on gsmarena and other similar sites at the specs of the mini pro and I I was lookin thru I seen the battery life of the phone wich is on 2g network it has 285 hours of standby time yet on 3g it has a standby time of 360 hours???? Can this be true?? I thought if the phone was on 2g it would save mor power on standby than being on standby than 3g can sum1 just confirm or your own experinces thanx, or and sorry for my grammer and punctuation im not that good at writing :-D
Sent from my U20i using XDA App
ttocs99 said:
Hi there just thought I could get a 2nd opinion on this matter wich is when ive been lookin round on google and I had a look on gsmarena and other similar sites at the specs of the mini pro and I I was lookin thru I seen the battery life of the phone wich is on 2g network it has 285 hours of standby time yet on 3g it has a standby time of 360 hours???? Can this be true?? I thought if the phone was on 2g it would save mor power on standby than being on standby than 3g can sum1 just confirm or your own experinces thanx, or and sorry for my grammer and punctuation im not that good at writing :-D
Sent from my U20i using XDA App
Click to expand...
Click to collapse
In my area the 3g signal isn't really good. So If I have 3g enabled the signal in my phone changes from 2g to 3g and then back again to 2g almost all the time, I guess that kind of depletes the battery quicker than just staying on a 2g network.
That's just a guess, and more than often my guesses are wrong.
kanellos said:
In my area the 3g signal isn't really good. So If I have 3g enabled the signal in my phone changes from 2g to 3g and then back again to 2g almost all the time, I guess that kind of depletes the battery quicker than just staying on a 2g network.
That's just a guess, and more than often my guesses are wrong.
Click to expand...
Click to collapse
Well I always have full signal were I live so it never goes on 1 bar so my pro doesnt have to fight to keep the signal therefore less battery drain if im correct? I just dont get why 3g standby is alot mor than 2g stanby on spec sheet maybe we could have some opinions from the devs them selves
Sent from my U20i using XDA App
kanellos said:
In my area the 3g signal isn't really good. So If I have 3g enabled the signal in my phone changes from 2g to 3g and then back again to 2g almost all the time, I guess that kind of depletes the battery quicker than just staying on a 2g network.
That's just a guess, and more than often my guesses are wrong.
Click to expand...
Click to collapse
You can always choose "WCDMA only", but with that signal...
Unless the phone is switched off you'll be unlikely to get more than 48hrs before charge. 2g in my opinion uses less power, it depends, if your downloading files you might spend 2 mins with an active 2g connection rather than seconds with a 3g! Swings and roundabouts.
Sent from my U20i using Tapatalk
I download on 3g but swap to 2g wen not using data
Sent from my U20i using XDA App
I'm using 2G but still have to charge daily or 2times/3day
still dont know how to use longer
yuduy said:
I'm using 2G but still have to charge daily or 2times/3day
still dont know how to use longer
Click to expand...
Click to collapse
Use it on 3g on 2g standby its 285 hours on 3g its 360 hours of standby time
Sent from my U20i using xda premium
ttocs99 said:
Use it on 3g on 2g standby its 285 hours on 3g its 360 hours of standby time
Sent from my U20i using xda premium
Click to expand...
Click to collapse
Ok.. on 3G... tell me how.
Because i hardly believe that 3G lasts longer than 2G.
360 hours = 12 days... i smell troll farts.
Because if data is not enabled.. you are not using 2G or 3G you are using GSM and then your battery life makes sense.
Other than that... NO.
that is just a swap data, they just make a mistake and battery life of this phone is really less in general duo many bugs
rophiroth said:
that is just a swap data, they just make a mistake and battery life of this phone is really less in general duo many bugs
Click to expand...
Click to collapse
It's the same story with the big X10.
They say 30 day standby.... if it's in flight mode.
Who uses a phone in flight mode?
OmegaRED^ said:
Ok.. on 3G... tell me how.
Because i hardly believe that 3G lasts longer than 2G.
360 hours = 12 days... i smell troll farts.
Because if data is not enabled.. you are not using 2G or 3G you are using GSM and then your battery life makes sense.
Other than that... NO.
Click to expand...
Click to collapse
I didnt see it lyk that but 2g and 3g are totaly diffrent networks u cant download on 2g with 3g speeds can you??? Nope so there for therefore there 2 diffrent networks and if you go buy what you said it doesnt make sence to me? Or and my other point is if you dont use data your still on the network you choose lets just say as an example I done some web surfing on 3g and then I turned data off it doesnt go on gsm does it because when I turn data on its stil 3g network so gsm doesnt even come into the equation but I do agree that sony lied about standby time on this wonderful bit of technology that we have here ;-)
Sent from my U20i using xda premium
ttocs99 said:
I didnt see it lyk that but 2g and 3g are totaly diffrent networks u cant download on 2g with 3g speeds can you??? Nope so there for therefore there 2 diffrent networks and if you go buy what you said it doesnt make sence to me? Or and my other point is if you dont use data your still on the network you choose lets just say as an example I done some web surfing on 3g and then I turned data off it doesnt go on gsm does it because when I turn data on its stil 3g network so gsm doesnt even come into the equation but I do agree that sony lied about standby time on this wonderful bit of technology that we have here ;-)
Sent from my U20i using xda premium
Click to expand...
Click to collapse
I'm just too proud to have one currently so i wont have a discussion over how Cellular radio's work. My mini pro = PRO.
The recent FIX makes me wonder if the Big x10 isn't missing a few libs.
OmegaRED^ said:
I'm just too proud to have one currently so i wont have a discussion over how Cellular radio's work. My mini pro = PRO.
The recent FIX makes me wonder if the Big x10 isn't missing a few libs.
Click to expand...
Click to collapse
Same here no point debaiting over gsm radio lol but you could be right about the big x10 its just a shame that big phone companies base standyby time on the phone when you dont go near the thing and its left in flight mode why cant they jus go on daily usage ov the handset from heavy usage to even light usage
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hi. im new to smartphone environment and i did read all posts in this thread, so i learn a lot about battery life. thanks guys but i need to know, (sorry if someone already asked) is the battery life effected when 3g/wifi signal bar is in strong or weak condition?
sorry for my poor english
arielVengeance said:
hi. im new to smartphone environment and i did read all posts in this thread, so i learn a lot about battery life. thanks guys but i need to know, (sorry if someone already asked) is the battery life effected when 3g/wifi signal bar is in strong or weak condition?
sorry for my poor english
Click to expand...
Click to collapse
Battery gets hit when its on low signal so it uses more power to boost your signal hope this helps
Sent from my U20i using xda premium
Related
Hello all - I don't know if there's any answer to this or not but thought I'd throw it out there. I updated Android myself to 2.1 since apparently AT&T doesn't feel the need to. That has been a fine experience and I've experience nothing negative aside from the wireless network speed. My phone now always has the H (for HSDPA from what I understand) instead of of 3G, but downloads, web browsing, and YouTube are all way slower than they were before. It takes 10 - 15 seconds to download a 750k app usually. I have ran the speed test app from speedtest.net and its results confirm this by showing 44 kbps downstream & 750 kbps upstream speeds.
Is there anything I can do to fix this? I know that HSDPA is supposed to be faster than 3G but this is unbearable - I am almost tempted to use EDGE exclusively because that is all I pick up at home (EDGE service that is) and I get better performance when using the browser than I do with HSDPA (although that is probably more mental than anything since when on HSDPA I am sitting there staring at the phone thinking "What is taking so long!" and when on EDGE I choose something and then don't worry about it for a few because I know it will take some time.
Thanks for any advice!
Budbay1 said:
Hello all - I don't know if there's any answer to this or not but thought I'd throw it out there. I updated Android myself to 2.1 since apparently AT&T doesn't feel the need to. That has been a fine experience and I've experience nothing negative aside from the wireless network speed. My phone now always has the H (for HSDPA from what I understand) instead of of 3G, but downloads, web browsing, and YouTube are all way slower than they were before. It takes 10 - 15 seconds to download a 750k app usually. I have ran the speed test app from speedtest.net and its results confirm this by showing 44 kbps downstream & 750 kbps upstream speeds.
Is there anything I can do to fix this? I know that HSDPA is supposed to be faster than 3G but this is unbearable - I am almost tempted to use EDGE exclusively because that is all I pick up at home (EDGE service that is) and I get better performance when using the browser than I do with HSDPA (although that is probably more mental than anything since when on HSDPA I am sitting there staring at the phone thinking "What is taking so long!" and when on EDGE I choose something and then don't worry about it for a few because I know it will take some time.
Thanks for any advice!
Click to expand...
Click to collapse
This is probably a network coverage issue and nothing you can do about it from a phone standpoint.
Ha! I love the first response had a joker pic because I was thinking of the joker when I wrote "why so sloooow".
Anyways when you say coverage what do you mean precisely? do you simply mean at&t hasnt done enough in my area for hsdpa to be effective? I do always have a full 4 bars of strength on it pretty much.
Thanks!
Sent from my X10a using XDA App
Budbay1 said:
Ha! I love the first response had a joker pic because I was thinking of the joker when I wrote "why so sloooow".
Anyways when you say coverage what do you mean precisely? do you simply mean at&t hasnt done enough in my area for hsdpa to be effective? I do always have a full 4 bars of strength on it pretty much.
Thanks!
Sent from my X10a using XDA App
Click to expand...
Click to collapse
Yes, I mean AT&T. Having four bars means that you have a good signal. It does not indicate however how much bandwidth AT&T has allocated to that particular area/tower.
Think of it like a wireless router at home or office. On your laptop or computer, you see that you have a strong WiFi signal but, that does not mean that you have a fast connection as that depends on your DSL/cable connection.
Get my point?
Got it, that's what I feared. So in essence by improving my phone with 2.1 I screwed my phone (currently) with hsdpa
Sent from my X10a using XDA App
Budbay1 said:
Got it, that's what I feared. So in essence by improving my phone with 2.1 I screwed my phone (currently) with hsdpa
Sent from my X10a using XDA App
Click to expand...
Click to collapse
No, it did not screw your phone. Your phone is innocent here. It is probably the network. AT&T may have a problem in that area. Did you try the speed somewhere else?
Nope, haven't tried it anywhere else. I didn't mean screw my phone, what I, meant was if at&t is not so good with hsdpa in my area I am stuck with those speeds until that is resolved because I can't force 3g (my speed when I had iphone 3g was usually around 1 mbps)
Sent from my X10a using XDA App
I am on att also with the 2.1, luckily im in an area where i get around 2mb/2mb sometimes faster, sometimes slower. Did you try the setting in wirelessnetworks/mobile networks/network mode/ tick wcdma only if not on H. could help not sure, just a thought.
Budbay1 said:
Nope, haven't tried it anywhere else. I didn't mean screw my phone, what I, meant was if at&t is not so good with hsdpa in my area I am stuck with those speeds until that is resolved because I can't force 3g (my speed when I had iphone 3g was usually around 1 mbps)
Sent from my X10a using XDA App
Click to expand...
Click to collapse
Your phone automatically switches between H/3G/E where available. I also have AT&T and have debranded my phone and did not notice any lag.
your problem is AT&T.
H is higher than 3G. if you got problems with it it`s because the signal is strong enough to use H but it preforms worse than 3G (cunfusing ah?!)
Well I was outside of my town the other day, in the country and noticed I was in hsdpa somehow so I ran a test and out there I was getting on average about 3.7 mbps. I guess where I am most of the time just isn't an optimal spot. Thanks all for the responses!
Sent from my X10a using XDA App
Hi
Does anyone know how to fix this issue? I am in a good area for signal and with previous phones am consistently on H. With my S2 it frequently switches between 3G and H even if it stays in the same spot. It will do it every few minutes.
This is causing havok when I try and tether and my Transformer and laptop keep getting signal interruptions.
Does anyone have a fix? I have Fast Dormancy disabled and I'm aware there may be some other engineer menus that have signal settings in that might work?
Thanks
Paul
Sent from my Transformer TF101 using XDA Premium App
Interesting.. And I thought it was just my network vodafone
Mine also switches between G/H/H+ all within 5 secs... yeah 5 seconds and it is kinda annoying.
Are you on GIFFGAFF as stated on you profile? or other network? cause I thought if might have do to something with vodafone..
Otherwise may be its something to do with the hardware settings, I too would like to know the answer
I've kept mine to use WCMA all the times...
tfn said:
Interesting.. And I thought it was just my network vodafone
Mine also switches between G/H/H+ all within 5 secs... yeah 5 seconds and it is kinda annoying.
Are you on GIFFGAFF as stated on you profile? or other network? cause I thought if might have do to something with vodafone..
Otherwise may be its something to do with the hardware settings, I too would like to know the answer
Click to expand...
Click to collapse
Yes, I'm on giffgaff.
Glad its not just me. Maybe the antenna is a little too sensitive.
Anyone know the secret code to get to the GSM/UTMS bits?
Sent from my Transformer TF101 using XDA Premium App
TheMathMan said:
Yes, I'm on giffgaff.
Glad its not just me. Maybe the antenna is a little too sensitive.
Anyone know the secret code to get to the GSM/UTMS bits?
Sent from my Transformer TF101 using XDA Premium App
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1069015
This thread has lots of codes, if any help i have no clue which might help us
OK. Found the 2263 code but that seems to want to enable/disable actual bands.
Am I looking into it too hard!?
Sent from my Transformer TF101 using XDA Premium App
hazem77 said:
I've kept mine to use WCMA all the times...
Click to expand...
Click to collapse
Now, for me wouldn't 3G and H/H+ both be considered as WCDMA under Mobile Network Settings? G and E would be GSM right?
If that is the case, staying on WCDMA wouldn't fix the problem.
Sent from my Transformer TF101 using XDA Premium App
Your phone shouldn't lock onto a H/H+ signal unless it has started to download data. That's how the protocol works.
If your phone is sitting idle it should be on 3G.
You should only get H/H+ when your phone is actively downloading.
Your phone shouldn't lock onto a H/H+ signal unless it has started to download data. That's how the protocol works.
If your phone is sitting idle it should be on 3G.
You should only get H/H+ when your phone is actively downloading.
Click to expand...
Click to collapse
OK. So how can I stop it flicking between the H and 3G. For instance when I am trying to stream it will get interrupted, or if I'm wirelessly tethered?
Sent from my Transformer TF101 using XDA Premium App
i'm from tunisia and have the same pronlem here.
Please developers help us to get rid of this 3g/h issue.
Guys,
I got the same problem here i n Brazil using a VIVO carrier.
I set in CONFIG -> WIRELESS AND NETWORK -> MOBILE NETWORKS -> NETWORK MODE -> WCDMA ONLY
I don`t know why it worked but now its working fine.
Could you test?
Rgds
Flavio
No problems to report in Amsterdam.
I'm biking through the whole city to get to work, no disconnects using TuneIn or Google Music. Provider is Vodafone, HSDPA+ all along the way.
Its Android issue
Think when iPhone, Windows phones have not had this issue, wat else other than Android. I have tried 3 different handsets. 3 different network - 3, O2 and Vodaphone. All has same problem. Android is the only thing common. I have been scouring the internet and posted everwhere possible since Dec 2010 from when I became Android user. There is no solution. Everone seems busy making their own Android versions and apps. Result there is no basic data and voice stability on Android. Have been relying on my decade old treo to receive n make important calls. Wonder where this is going. My heart n soul seems to sway to the iPhone lately. Atleast wat they give works well.
Its Android issue
BTW those config settings are useless too. I have even used the code to get into hidden menu and change config but no use. It's the same issue. From H to 3g and from G to E I gsm.
Sorry for the question, but whats the problem with switching? I have the same thing but is not a problem for me.
Sent from my GT-I9100 using XDA App
Nobody should get worried about that switching, THIS IS NORMAL!
H/H+ is an high speed 3G protocol.
Basically:
1. 3G means DL 384 Kbps tops. The modem is under 3G signal most of the time. Whenever something on your phone starts checking/d-loading it communicates at THE BEGINNING under 3G protocol. Also, long ping time> 210 ms.
2. HSDPA max 14 Mbps/HSDPA+ can go as high as 42 Mbps ( topped only by cell tower). If there's need for large packet data or shorter ping time, IT AUTOMATICALLY SWITCHES TO H/H+(IF AVAIL). Hsdpa consumes more power and it's a communication protocol. When connected under H/H+ error correction bits are transmitted along data stream. It's like switching your home wifi on b/g/n. ...or like the automatic gearbox going to overdrive.
If you see a lot of this switching it means there's a lot of downloading/uploading going on.
I have it switching too between 3g and h on o2 and its making the internet so unstable you cannot do anything at all. This is certain not normal as the switch happens every second and continues to do so until phone is off
Mine is also switching to 3G once connection is idle for about 3 seconds. So far no problem and it uses less power than my SGS1 for browsing since my SGS1 doesn't switch to 3G when idle.
Mine is no problem between this signal switching, check your area or check your country maybe too much communication devices there so that's why it is distorted. Just use the common carrier with plenty of cell sites for a good signal of your phone.
What do i need to dial to fix it to 3g only from 2g?
I have access to wifi and 3g at my work and was wondering whether or not turning off 3g and using wifi. I have full 3g signal so i get about 2.2mbps down on 3g which is more than enough for me...any ideas??
jsayedahmad said:
I have access to wifi and 3g at my work and was wondering whether or not turning off 3g and using wifi. I have full 3g signal so i get about 2.2mbps down on 3g which is more than enough for me...any ideas??
Click to expand...
Click to collapse
I have great battery with WiFi and is very fast
Can s-off come out and play? You run but you can't hide
To my knowledge, WiFi consumes less battery whereas 3G consumes a tad bit more. It seems you have excellent connection though so I don't know if it would be the same. I am sure that WiFi will be easier on your battery though. May someone chime in to confirm?
DDiaz007 said:
To my knowledge, WiFi consumes less battery whereas 3G consumes a tad bit more. It seems you have excellent connection though so I don't know if it would be the same. I am sure that WiFi will be easier on your battery though. May someone chime in to confirm?
Click to expand...
Click to collapse
Confirming! I do tests of this and I get HOURS more battery when I am in Wifi areas (my house / work) than using 3G. I'm getting anywhere from 15-18 hours on 3G and 19-24 hours using Wifi.
pnewgaard said:
Confirming! I do tests of this and I get HOURS more battery when I am in Wifi areas (my house / work) than using 3G. I'm getting anywhere from 15-18 hours on 3G and 19-24 hours using Wifi.
Click to expand...
Click to collapse
Well here is your answer OP, WiFi! Thanks for the confirmation also sir!
Mine GS3 is always connected the mobile networks with H - it will flick up to H+ is that is available. While the phone is dormant should it drop down to 3G to save power?
It doesn't, so I'm trying to work out it there is something syncing in the back ground keeping the H connection alive or if Fast Dormancy should be turned off.
Thanks
I'm on T-Mobile (UK)
Idle (fast dormancy) is a HSPA tech and thus does not drop out of Hspa - at least according to the graph; in reality the connection is cut.
Sent from my GT-I9300 using xda premium
d4fseeker said:
Idle (fast dormancy) is a HSPA tech and thus does not drop out of Hspa - at least according to the graph; in reality the connection is cut.
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
So this means it stays on H, but with no connection, it reconnects when it needs to?
Thanks
I am on T-Mobile uk and am using the newest JB leak. Mine fluctuates between H and H+ when using data and shows 3g when data not being used.
bigr1979 said:
I am on T-Mobile uk and am using the newest JB leak. Mine fluctuates between H and H+ when using data and shows 3g when data not being used.
Click to expand...
Click to collapse
See this is what I thought should happen. Mine is just sitting here on H, doing nothing. I'm not too concerned, because battery is great, but I'd like to resolve it if I can!
thanks
It just depends on your network & towers.
For years at home my Samsung phones (S1, S2 & now S3) have been on 3g when idle but over the last month it stays on H. This is due to a tower upgrade.
At a friends place it idles at H+ and at my parent's house it idles on 3g. So nothing to worry about.
Sent from my GT-I9300 using xda premium
rowlers said:
See this is what I thought should happen. Mine is just sitting here on H, doing nothing. I'm not too concerned, because battery is great, but I'd like to resolve it if I can!
thanks
Click to expand...
Click to collapse
slighlty off topic, but what speeds do you get whilst on H+, i get between 2 and 4 Mbps
Regards
Jack
JSale said:
slighlty off topic, but what speeds do you get whilst on H+, i get between 2 and 4 Mbps
Regards
Jack
Click to expand...
Click to collapse
I normally can get 3 Mbps max, the upload is shocking though normally 400kbps max
Asit says in the title.This constant change between the two network types causes data to be slow and timeout quite a lot as well as drain battery. Even watching low quality youtube videos is impossible because of the switching. I'm on the current CM10.1 build right now. Is there anyway I can just stick to one network type instead of it switching every second? I've tried going into phone information and set it to gsm only, wcdma preferred, etc. But it also just goes back to gsm auto (prl). And finally the weird thing is that there will be moments of time where data can be consistent (for like 5 minutes) and then it'll revert back to being slow.
Ive read in older posts (early 2012) that going to build.prop and changing ro.ril.hsxpa or somethinf like that helps. I can't find that so I'm wondering if theres another way to keep it at UMTS or HSDPA and NOT have it switch.
I'm on the Wind Mobile Network right now with baseband 1.15 if that helps. (I'm also a noob who can just flash stuff and new to this phone so go essy on me ^_^)
They are the same network. The phone just switches from hsdpa to umts when data is not in use to save battery. But hsdpa+ is just a higher speed version of umts, just like edge is a higher speed form of gprs. So That is not what is causing the time outs. It's probably just had network where you are. Mine switches between umts and hsdpa+ all the time, and my connection never times out.
Sent from my GT-N8013 using xda app-developers app
masondoctorjt said:
They are the same network. The phone just switches from hsdpa to umts when data is not in use to save battery. Buot hsdpa+ is just a higher speed version of umts, just like edge is a higher speed form of gprs. So That is not what is causing the time outs. It's probably just had network where you are. Mine switches between umts and hsdpa+ all the time, and my connection never times out.
Sent from my GT-N8013 using xda app-developers app
Click to expand...
Click to collapse
Yes I know they're supposed to switch but that's the thing; even in standby it keeps switching constantly almost every other second causing battery drain. And the reasn why I'd prefer just hsdpa is that data is consistent on it whereas umts just times out on me almost everytime or rather when the two switch. Is this just a network issue?
I think it is just a network issue, as with tmobile as soon as the phone calls for data, it goes to hspa and there is not lag when it switches.
Sent from my GT-N8013 using xda app-developers app
masondoctorjt said:
I think it is just a network issue, as with tmobile as soon as the phone calls for data, it goes to hspa and there is not lag when it switches.
Sent from my GT-N8013 using xda app-developers app
Click to expand...
Click to collapse
I tried everything I can and data is still inconsistent. I'll try testing out different baseband versions to see if that does something but unfortunately, it could be a hardware issue with the radio :/ Thanks for the help.
CaffeineGiant said:
I tried everything I can and data is still inconsistent. I'll try testing out different baseband versions to see if that does something but unfortunately, it could be a hardware issue with the radio :/ Thanks for the help.
Click to expand...
Click to collapse
Hey CaffeineGiant, did you try the latest OTA radio.zip? Someone named jordin posted it in a bunch of threads a while back. If you rename it to PH85IMG it could flash in bootloader and help!
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
SuperAfnan said:
Hey CaffeineGiant, did you try the latest OTA radio.zip? Someone named jordin posted it in a bunch of threads a while back. If you rename it to PH85IMG it could flash in bootloader and help!
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Are you talking about the 1.15 version, cuz I've already done that and the problem persists.
Quick question, I've opened up BetterBatteryStats and over a course of 7 1/2 hours idle, under partial wakelocks, google checkin service has had 967 counts, alarm manager 723 and a couple days ago RILJ and sdio dmux were up there. The difference between then and now is that I've had wifi. Is that anyway related? I don't wanna give up hope on this phone because I like it despite its poor battery life and this radio
CaffeineGiant said:
Are you talking about the 1.15 version, cuz I've already done that and the problem persists.
Quick question, I've opened up BetterBatteryStats and over a course of 7 1/2 hours idle, under partial wakelocks, google checkin service has had 967 counts, alarm manager 723 and a couple days ago RILJ and sdio dmux were up there. The difference between then and now is that I've had wifi. Is that anyway related? I don't wanna give up hope on this phone because I like it despite its poor battery life and this radio
Click to expand...
Click to collapse
I think you should download Greenify and hibernate your apps. That saves tons of battery. It looks like you're getting wakelocks which are causing the drain.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app