OK, I have an att galaxy s7 g930a rooted phone. If imy out and about and not by an outlet, my battery is dead by around 6 pm. I'm not really a power user.
Immediately looking at better battery stats which it says since boot, system used 24%, and next is wake lock 6%, then kk launcher at 4%.
For battery optimization, I keep the phone in power saver mode. I also have juice defender ultimate and I run it in balanced mode. I have the setting unselected so the phone does not sync constantly for new emails etc.
I have power toggles and turn off GPS, mobile data, and WiFi when I'm not using it knowing all these transmitters drain the battery. And yet I can't get over 12 hours on a charge.
Try checking the cable n charger see if they are stock charger ..sometimes quick charge doesnt charge the battery properly ...u might need to replace battery if they r good
The battery on an s7 is built in.... not replacable.
It is replaceable u need to a good technician to open up the back using blow dryer type device n then swap the battery its pretty easy
I haven't had the phone a year yet. I really don't believe the battery itself is bad. Almost every situation like this I've seen has been an app draiming the battery... nothing physically wrong with the device.
What screen on time are you getting? What mobile network setting are you using/network are you on? 3G or 4G, if you're on a 3G network make sure it's set to 2G/3G in settings. Try installing gsam battery stats to see if you can identify anything unusual or something that's causing a drain.
Sent from my SM-G930F using Tapatalk
dorlow said:
I haven't had the phone a year yet. I really don't believe the battery itself is bad. Almost every situation like this I've seen has been an app draiming the battery... nothing physically wrong with the device.
Click to expand...
Click to collapse
I tend to agree with you. I've recently gone through seven S7's... I've exchanged the previous ones and am currently on my eighth device. Among these phones, it was only the international unlocked variant (SM-G930F) and the US unlocked variant (SM-G930U) that showed rather impressive battery life. I was often able to get 1.5 to 2 days of run time on a single charge from each of those models. The 930F was even better battery-wise than the 930U's, which weren't bad at all. Conversely, the batteries in the carrier variants that I've tried have seemed to deplete far too rapidly - similar to the situation you've described with your phone. My current S7 is an SM-G930P (Sprint variant) and its battery seems to last half as long (or less) than the unlocked S7 variants I've used.
The most generally disturbing thing for me about the GS7 is that there has been one or more significantly undesirable issues that seem exclusive to and inherently present among each of the model variant categories. At least this has appeared the case based upon the S7's that I've personally tested. For me, it seems there is no variant model of this device that's without seriously objectionable issues. However, finding some way to make the carrier-variant batteries last significantly longer would go a long way toward making other said issues more tolerable.
You could try greenify if you got xposed installed. There is another module too, but the name escapes me right now.
dorlow said:
OK, I have an att galaxy s7 g930a rooted phone.
Click to expand...
Click to collapse
From what i've read the root method using eng boot for snapdragon phones makes the cpu run at the highest frequency, so yes the battery life will suffer.
peachpuff said:
From what i've read the root method using eng boot for snapdragon phones makes the cpu run at the highest frequency, so yes the battery life will suffer.
Click to expand...
Click to collapse
Hmm, so the rooting method for the SD820 equipped S7's effectively overclocks the CPU? Perhaps it changes the multiplier?
The 4 cores on my unrooted SD820 equipped S7's have always idled at 307 MHz, and then spiked up as needed. Do the rooted SD820 equipped S7's idle at a higher clock speed? Or do they simply have a higher maximum clock speed - i.e., beyond 2.15 GHz? Either way, I can see how that would suck the battery down noticeably quicker.
clonk said:
Hmm, so the rooting method for the SD820 equipped S7's effectively overclocks the CPU? Perhaps it changes the multiplier?
The 4 cores on my unrooted SD820 equipped S7's have always idled at 307 MHz, and then spiked up as needed. Do the rooted SD820 equipped S7's idle at a higher clock speed? Or do they simply have a higher maximum clock speed - i.e., beyond 2.15 GHz? Either way, I can see how that would suck the battery down noticeably quicker.
Click to expand...
Click to collapse
It has to do with the governor, its apparently set to performance rather than interactive. Check what yours is set to, cpuid app can show you that.
peachpuff said:
It has to do with the governor, its apparently set to performance rather than interactive. Check what yours is set to, cpuid app can show you that.
Click to expand...
Click to collapse
Ah, that would be the CPU auto-scaling mechanism, if I'm not mistaken. I think mine's obviously set to interactive since the cores idle at 307 MHz. I'm guessing that if scaling were set to performance mode the cores would be running at full speed instead. And yes, that would drain the battery far quicker! And I sure DON'T need this 930P to drain its battery more rapidly than it already does. I'm currently playing with the debloater app to see if I can make some improvements tha way.
Related
I think I may have a simple yet very inefficient method of ensuring stable overclock at higher frequencies. I have been messing around with many different OC kernels (along with many different roms ), and have noticed the same situation. While charging, all overclock speeds beyond 633 are pretty stable. It may take a few attempts to reach a certain speed (as the phone might reboot), but once successful its all golden!
I'd previously though instabilities were due to the fact that these kernels were undervolted and thus, after a certain frequency, needed more juice to function properly, but when I removed the charger. My god...it still ran! Just as effectively for extended periods of time.
The only problem was the phone would either reboot or hang if the screen was powered-off and idle/sleep for more than 1-3 secs. So I tried using SetCpu's profiles to lower the clock speed to various speeds below 633 during sleep. Yet to no avail. The phone would always freeze/reboot when it attempted to clock back up.
So if someone were to develop an app that would implement a toggle feature, or make modifications to the current kernels to disable sleep for test purposes I believe that might help. I am far too inexperienced a programmer to dev this but know there was a command under reference called "Partial Wake Lock" that can disable cpu sleep.
Also I realize, if implemented as is, this will destroy battery life. But with a good toggle switch it can be treated as an Overdrive mode!!!
Forgot to mention that while charging and clocked beyond 633 it always awoke with no problems.
My phone will clock to 710 before freezing up but it's crazy unstable. It seems to behave well at 652 with a freeze up roughly every 6-7 hours. I've never tried it that high with the charger though. Seems interesting.
extended batteries also reduce overclocking, my 2600mah battery peaks at 595, where as the official battery gets me to 633
-------------------------------------
Sent from my HTC Magic
I have exactly the same issue. My G1 runs stable on 672, while plugged in into
the charger. Even using GPS for navigation, browsing and so on, everything works great. As soon as the charger is plugged out and the phone goes into sleep it reboots.
I end up in changing the frequencies on demand with setCPU. When i need more speed, e.g. browsing the web, i set it manually to 672. And before putting it in my pocket i reduce to 614. Even on battery i can use 672.
Also tried profiles in SetCPU but this did not help.
BTW. Using 5.0.8t4, same was on t3
Damian
Nagoki said:
I think I may have a simple yet very inefficient method of ensuring stable overclock at higher frequencies. I have been messing around with many different OC kernels (along with many different roms ), and have noticed the same situation. While charging, all overclock speeds beyond 633 are pretty stable. It may take a few attempts to reach a certain speed (as the phone might reboot), but once successful its all golden!
I'd previously though instabilities were due to the fact that these kernels were undervolted and thus, after a certain frequency, needed more juice to function properly, but when I removed the charger. My god...it still ran! Just as effectively for extended periods of time.
The only problem was the phone would either reboot or hang if the screen was powered-off and idle/sleep for more than 1-3 secs. So I tried using SetCpu's profiles to lower the clock speed to various speeds below 633 during sleep. Yet to no avail. The phone would always freeze/reboot when it attempted to clock back up.
So if someone were to develop an app that would implement a toggle feature, or make modifications to the current kernels to disable sleep for test purposes I believe that might help. I am far too inexperienced a programmer to dev this but know there was a command under reference called "Partial Wake Lock" that can disable cpu sleep.
Also I realize, if implemented as is, this will destroy battery life. But with a good toggle switch it can be treated as an Overdrive mode!!!
Click to expand...
Click to collapse
The speeds will be different on different phones due to the hardware even slightly different depending on where the phone was made mine can go to 720mhz while others 614mhz which means unless another way of overclocking is found then we won't have a stable overclock for a while :/
mejorguille said:
My phone will clock to 710 before freezing up but it's crazy unstable. It seems to behave well at 652 with a freeze up roughly every 6-7 hours. I've never tried it that high with the charger though. Seems interesting.
Click to expand...
Click to collapse
Lemme know how that goes. I've noticed higher clock frequencies are much more stable while charging.
Jedipottsy said:
extended batteries also reduce overclocking, my 2600mah battery peaks at 595, where as the official battery gets me to 633
-------------------------------------
Sent from my HTC Magic
Click to expand...
Click to collapse
That's strange. Maybe its a voltage difference between batteries that makes its more unstable.
vassloff said:
I have exactly the same issue. My G1 runs stable on 672, while plugged in into
the charger. Even using GPS for navigation, browsing and so on, everything works great. As soon as the charger is plugged out and the phone goes into sleep it reboots.
I end up in changing the frequencies on demand with setCPU. When i need more speed, e.g. browsing the web, i set it manually to 672. And before putting it in my pocket i reduce to 614. Even on battery i can use 672.
Also tried profiles in SetCPU but this did not help.
BTW. Using 5.0.8t4, same was on t3
Damian
Click to expand...
Click to collapse
I believe when the phone is charging the operating system either suspends or extends idle/sleep when the screen backlight is off. This would explain why it reboots on battery and not while plugged in. Also the SetCpu profiles would work if only overclocking wasn't so unstable.
xillius200 said:
The speeds will be different on different phones due to the hardware even slightly different depending on where the phone was made mine can go to 720mhz while others 614mhz which means unless another way of overclocking is found then we won't have a stable overclock for a while :/
Click to expand...
Click to collapse
That is true, but if we can help the relative stability of each clock rate past 528 by using simple methods (i.e. overclocking while charging), we can simply aim to improve its reliability until a better way to overclock is found.
I know I know that disabling data can get me 24-30+ hours of battery life. However for my on the go lifestyle, that's just not possible. I depend on my phone to keep my email updated. I have four email accounts (two of which are exchange) that sync calendars and contacts as well as email. I was using push on my two exchange accounts, but I've changed that to do every hour for one and every 15 minutes for the other. my other emails are set to check every hour. I have craigslist notifications set to check a single time per day. I have a weather widget that is only supposed to check every 4 hours.
I am running Perception 10.2 with the latest firebird 2 kernel, but have also tried various versions of speedmod's kernel. I have tried the following modems
JL1, JL2, JL3, JK4, KP1.
No matter what I cannot seem to get more then about 10 hours of battery life on standby ONLY. no phone calls, no turning the display on, nothing. I consistently get around 1 hour of time per 10% drain on my battery. I'm not asking for miracles. I just want my phone to be able to last at least 12 hours (a full work day plus drive time.)
I've already set the programs with the most spartan settings I am willing to use. I'd rather have my phone pushing data to my much more often, but I understand that's not going to be possible unless I can find a drastic increase in my battery life. What else can I do?
I have 3 email push accounts, and google voice syncing all the time. Email includes emails with attachments too, and EDGE is pretty much sufficient for most of these things. Even for normal day to day activities like browsing XDA, EDGE is pretty much sufficient.
So I would advise u to switch from 3G to EDGE. U can turn on 3G when u need more bandwidth demanding apps. This would reduce some strain on ur battery.
Only downside would be that u can't browse n talk on phone at the same time. But its ok by me to get a few mails after the call I am on is over. I can live with this small inconvinience in leiu of the additional battery gain.
As of this minute, with the configuration I have in my signature (am using xcal kernel), I have like 63% battery left after ~7.15 hours standby, with 1h31m of display on and 40m of calls, alongside mails being pushed.
Edit: At the end of my 'normal' day with 'moderate' usage (1-1.5 hours calls and 1.5-2 hour display being on (not for games/movies, but with active data transfer on like texting), I reach home with ~50-60% battery left.
On a side note: I would recommend to turn off updates in weather widget, and use a manual refresh when needed.
how do you easily toggle between 2G/3G? it's my understanding you have to use service menus to access the change.
asrrin29 said:
how do you easily toggle between 2G/3G? it's my understanding you have to use service menus to access the change.
Click to expand...
Click to collapse
If u r on the ROM I am using, u can get it in network settings.
Some 2.2.1 ROMs do not have it in network settings. If ur ROM doesn't have it, u would need to access through the service mode code "*#*#197328640#*#*.
When in service mode, here is the sequence to select in the options:
option 1
option 8
option 4
option 3
Note: Pressing 'back' key will NOT take u back. It will close the service menu. Press the 'menu' key, and select 'back' to go back.
Be warned, this would not stick on reboot. U would need to repeat these steps whenever u reboot.
Alternately, I would suggest u move to a ROM that supports EDGE/3G switch. If the ROM supports this option in network settings, it would stick on rebooting too.
Yeah, I just found that. Perception supports switching, but you have to go to the settings menu to do it. I found something called Juice defender, and will play around with that as well. Unfortunately we aren't on an ASOP build, so we can't auto toggle 2G/3G, have to do it from the menu. I will report and let you know what I find!
asrrin29 said:
Yeah, I just found that. Perception supports switching, but you have to go to the settings menu to do it. I found something called Juice defender, and will play around with that as well. Unfortunately we aren't on an ASOP build, so we can't auto toggle 2G/3G, have to do it from the menu. I will report and let you know what I find!
Click to expand...
Click to collapse
Sure. By the way, I don't use any apps like juice defender. Realized that my battery is well off without them by taking care of little things like turning off wifi and bluetooth when not using them (well, these are the only two things I take care of manually).
I would normally agree with you, but as I was looking through the app I saw that it actually disables data while the phone is off, and only turns it on temporarily at intervals to allow application updates. If it truly works just like it states, I could have essentially a battery experience similar to turning off data while still enjoying my notifications. More experimentation is necessary.
asrrin29 said:
I would normally agree with you, but as I was looking through the app I saw that it actually disables data while the phone is off, and only turns it on temporarily at intervals to allow application updates. If it truly works just like it states, I could have essentially a battery experience similar to turning off data while still enjoying my notifications. More experimentation is necessary.
Click to expand...
Click to collapse
Juice Defender gives me 60 to 70 % more battery life. I have it set to sync every 15min and wifi is location based.
Yeah, Juice Defender works absolute wonders! it gives me the same amount of battery savings that switching to 2G gave me, but automatically enables and disables itself when I need it. I'm on 70% battery left with over 7 hours off the charger, and that was taking voice calls and doing some light email checking!
Try a kernel that supports OC/UV. You don't have to overclock, but undervolting is what you want. Check out Suckerpunch kernel. Nice guide by shaolin. Can't argue against a black belt. lol.
xdahgary said:
Try a kernel that supports OC/UV. You don't have to overclock, but undervolting is what you want. Check out Suckerpunch kernel. Nice guide by shaolin. Can't argue against a black belt. lol.
Click to expand...
Click to collapse
Unless I can only have it underclock while I'm not using it, I think I'll pass. I bought the Captivate for it's 1GHz proc, if I wanted something slower I would have gotten the aria.
You misunderstand. It's undervolt. That means use less power at different processing states.
xdahgary said:
You misunderstand. It's undervolt. That means use less power at different processing states.
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Click to collapse
you can undervolt a proc without underclocking it? How is this possible, unless they changed the FSB or timings on the chip?
I pretty sure you can use voltage control and set highest state at 1000mhz and set lower voltages for states below it. That's as techincal I'm going to get.
asrrin29 said:
you can undervolt a proc without underclocking it? How is this possible, unless they changed the FSB or timings on the chip?
Click to expand...
Click to collapse
By running the chip slightly out of spec.
You can usually undervolt each cpu step by 50 to 150 mV. How to find the right point really does just take trial and error. And as with all overclocking/underclocking your mileage may vary. Some phones can really be pushed to the limits and run fine, others don't like even the slightest changes to the stock settings. All depends on how well your phone was put together, and from where in the wafer your CPU was taken from.
Undervolting can save you a fair bit of battery though. Won't help a whole lot when you're actually using the phone (since the screen and 3G/WiFi radios will suck way more power than the CPU), but it will help seriously increase your standby time.
PS While undervolting and overclocking capable kernels tend to be one and the same (since the underlying code is related) you DO NOT need to overclock your phone to undervolt the CPU. You can run your CPU at stock 1 GHz while still undervolting each frequency step. Course, with some tweaking and good luck, you can even get your phone to run at 1.2 or 1.3 GHz while still using no more power than a stock phone at 1 GHz.
How much battery gets used when the phone constantly switches between EDGE and 3G? I'm curious because my building has thick walls and my 3G signal constantly drops down to EDGE when I pick it up, then goes back to 3G when I leave it sitting out on my desk.
Shammyh said:
By running the chip slightly out of spec.
You can usually undervolt each cpu step by 50 to 150 mV. How to find the right point really does just take trial and error. And as with all overclocking/underclocking your mileage may vary. Some phones can really be pushed to the limits and run fine, others don't like even the slightest changes to the stock settings. All depends on how well your phone was put together, and from where in the wafer your CPU was taken from.
Undervolting can save you a fair bit of battery though. Won't help a whole lot when you're actually using the phone (since the screen and 3G/WiFi radios will suck way more power than the CPU), but it will help seriously increase your standby time.
PS While undervolting and overclocking capable kernels tend to be one and the same (since the underlying code is related) you DO NOT need to overclock your phone to undervolt the CPU. You can run your CPU at stock 1 GHz while still undervolting each frequency step. Course, with some tweaking and good luck, you can even get your phone to run at 1.2 or 1.3 GHz while still using no more power than a stock phone at 1 GHz.
Click to expand...
Click to collapse
Thank you for being the geek.
clydethecash said:
How much battery gets used when the phone constantly switches between EDGE and 3G? I'm curious because my building has thick walls and my 3G signal constantly drops down to EDGE when I pick it up, then goes back to 3G when I leave it sitting out on my desk.
Click to expand...
Click to collapse
Any time your phone is forced to switch from 3G to Edge, or even from one band to another, it's not a good sign for your battery. Exactly how much power difference? Grab a multimeter and hook it up between your phone and battery. Record some data, and test for statistical significance. And let us all know.
Short of that, I'd say if you spend a lot of your day in an area with known bad coverage, I would hop into the engineering mode (*#*#0011#*#*), and lock your phone to a specific band and radio mode. Like 850 MHz EDGE, or 850 MHz W-CDMA. Or if you are in an 1900 area, then 1900 EDGE/W-CDMA. Not just EDGE or 3G mode, but a specific band AND radio mode. You need to be smart, and pick the band that has the best coverage so you don't make life even harder on your radio, but it can save some battery life over the phone jumping around ever time you walk from one side of the room to the other.
i running paragon 5.1 rom with the 1280mhz kernel overclocked to 1280 and undervolted. my phone has been unplugged since 7:30 am eastern time it is now 8:04 pm eastern and i have 73% battery left lol. i have done everything today on the web screwing around with my phone. the best rom so far and im even overclocked.
nate25 said:
i running paragon 5.1 rom with the 1280mhz kernel overclocked to 1280 and undervolted. my phone has been unplugged since 7:30 am eastern time it is now 8:04 pm eastern and i have 73% battery left lol. i have done everything today on the web screwing around with my phone. the best rom so far and im even overclocked.
Click to expand...
Click to collapse
Post usage stats please, like how long display been on, time spent on calls, etc.
Btw, does this ROM allow switching between 2G and 3G in the mobile network settings menu.
In the power options, under processor power management, the maximum processor state on battery seems to always revert back to 100% after a reboot or changing power plans. Any ideas why the setting won't stick?
I noticed this as well
..very annoying
is that the only setting you noticed reverting? or are there more?
I assumed win8 handles processes differently requiring less battery consumption.
Sent from my EVO using xda premium
but that isn't the issue
if u go into settings and change the 100% to anything else
it always reverts back .....very annoying ....marked difference in battery life noticed
If you create a new power plan and use it, the settings will stay after a reboot. This is what I did.
Did anyone try 20% CPU so far ? And if so, how is the battery life?
I won't mind getting Surface Pro if I can throttle down its CPU when on battery to Surface RT's speed for a longer battery.
I currently have a RT version with me
Power consumption curve for CPUs is very non-linear. 90% from 100% will probably save you more power than 20% from 90% will. You'd just be wasting a ton of processing capability.
GoodDayToDie said:
Power consumption curve for CPUs is very non-linear. 90% from 100% will probably save you more power than 20% from 90% will. You'd just be wasting a ton of processing capability.
Click to expand...
Click to collapse
Not only that but the windows throttle percentage is not really as specific as a 0-100 range would suggest, so even if you set 20% it might limit the cpu to its minimum frequency.
If you use a tool such as this you can see what the current frequency is: http://www.cpuid.com/softwares/tmonitor.html
With my laptops (much slower) Core2Duo the minimum frequency was too slow, but about 50% of the max worked well and dramatically reduced the heat under load.
Some people reckon it is better to allow the cpu to use its full frequency so that it finishes the job faster and can move back to the lowest idle state. I am not sure that really applies to i5 (which doesn't support the ARM-style idle states that haswell will) and like you say the power consumption at lower cpu frequencies doesn't vary much. My experience with windows is that sometimes for no apparent reason at all programs such as word or chrome sit using 50+% of the cpu and you have to restart the process. It doesn't happen often at all but you might not realise until your battery is low. With the pro's i5 I expect you could get away with quite a low cpu frequency and would at least know you will always get roughly the same battery life.
This is the same problem that w700 has, an even earlier product. This situation made the biggest thread in the acer community because people are angry, some even took back their products and traded for the surface which made it the same than people realized it was not the w700 itself. Throttle stop didnt work because it seems to be more temp related.
Here are some interesting topics
http://community.acer.com/t5/Acer-T...rottling-Turbo-Boost-issues/td-p/6873/page/28
http://forum.tabletpcreview.com/acer-gateway/54122-w700-throttling.html
Walderstorn said:
This is the same problem that w700 has, an even earlier product. This situation made the biggest thread in the acer community because people are angry, some even took back their products and traded for the surface which made it the same than people realized it was not the w700 itself. Throttle stop didnt work because it seems to be more temp related.
Here are some interesting topics
http://community.acer.com/t5/Acer-T...rottling-Turbo-Boost-issues/td-p/6873/page/28
http://forum.tabletpcreview.com/acer-gateway/54122-w700-throttling.html
Click to expand...
Click to collapse
Actually, it is nothing like that problem. The OP is talking about manually limiting the max clock of the device using the Windows setting that has been there for a while now.
The Problem With The S4 That It Has More Cpu Then It Needs. It Doesnt Have To Use It Cpu Up To 1600 Mhz, But It Automatically Does,
It Works Perfectly At 2 Cores And 800 Mhz, No Difference, Only A Better Experience , Please Read On
Ok Guys, This Will Be The Battery Discussion Page For The S4, We Will Be Doing Kernel And Under Volting Test, And Ways To Save Battery,
We Will Post Battery Records Here, And Many Other Things, This Is How It Works
I Will Post Mine Tomorrow After Fully Charging
Must Be Fully Charged Till 5 Percent Charge Without Pluging In Cable In Between,
And You Must Use Your Device As You Would Everyday
Install Cpu Spy
This Is The Layout You Fill In For Your Post
ROM:
KERNEL:
CPU MIN:
CPU MAX:
CPU GOVERNOR:
CORES ONLINE:
CORES OFFLINE:
Click to expand...
Click to collapse
Information Of How You Used Your Phone During The Process
And Any Other Information Like The Apps You Have Installed, And The App You Use To Save Battery With, Or Your
App Alternatives For Better Battery Life
Attach Photos (screenshots) Of Your Battery Record, Stats, And On Screen Time Using The Stock App In The Settings
And Your Cpu Spy Page
"i For One Have 2 Cores Offline And Under Volted To 250-800 On Both Online Cores And Have The Ondemand Governor Activated, And I Havent Felt Performance Lost, Runs Temple Run And Subway Surfers Perfectly, And No Heat, Even If Im Charging With Wifi On And Im Downloading Something, Its Great
Seems to be a nice idea. But could you elaborate as on why the text is bold and you had to use capslock for 1/2 of it!?
@slind ok i fixed the post. i will be posting links to the posts who are great battery savers without loosing performance
So basically, we use an I9500 like an Ace or a Grand to get rid of heating and battery drains.. Andyou suggest that it won't result in performance loss. I'd suggest playing games that are more graphically intensive and not just Temple Run.. Try copying data from one memory card to another, or simply try running a Full HD Video. Also, check out web browsing or maybe multitasking, and you'll see where the performance dies out.
I think the fix should come in the upcoming releases of stock firmware by Samsung. By turning off a couple of cores, you're only going back a couple of years. I don't think I upgraded from the S3 to S4 for that reason.
cabloomi said:
The Problem With The S4 That It Has More Cpu Then It Needs. It Doesnt Have To Use It Cpu Up To 1600 Mhz, But It Automatically Does,
It Works Perfectly At 2 Cores And 800 Mhz, No Difference, Only A Better Experience , Please Read On
Ok Guys, This Will Be The Battery Discussion Page For The S4, We Will Be Doing Kernel And Under Volting Test, And Ways To Save Battery,
We Will Post Battery Records Here, And Many Other Things, This Is How It Works
I Will Post Mine Tomorrow After Fully Charging
Must Be Fully Charged Till 5 Percent Charge Without Pluging In Cable In Between,
And You Must Use Your Device As You Would Everyday
Install Cpu Spy
This Is The Layout You Fill In For Your Post
Information Of How You Used Your Phone During The Process
And Any Other Information Like The Apps You Have Installed, And The App You Use To Save Battery With, Or Your
App Alternatives For Better Battery Life
Attach Photos (screenshots) Of Your Battery Record, Stats, And On Screen Time Using The Stock App In The Settings
And Your Cpu Spy Page
"i For One Have 2 Cores Offline And Under Volted To 250-800 On Both Online Cores And Have The Ondemand Governor Activated, And I Havent Felt Performance Lost, Runs Temple Run And Subway Surfers Perfectly, And No Heat, Even If Im Charging With Wifi On And Im Downloading Something, Its Great
Click to expand...
Click to collapse
post some screenshots with your screen time.
@adyscorpius
everyone has there preferences and there needs in a phone. and there own settings. and this is a Battery discussion thread. we will be doing many performance and voltage mods, so everyone could choose the settings that suits them. now please dont post aggressive post like that, im not stupid. i know that my settings are very low.
but for my most played games and most used apps. it doesnt seem to effect my performance, so im comfortable with my settings
i had the phone for 2 weeks, happily showing off battery performance and then i asked myself again, why the heck i bought this phone in the first place? BECAUSE IT HAS REPLACABLE BATTERY!.. LOL.. how silly i am trying to squeeze that little drop of power out of the battery when I can double the battery just by getting another spare.
no need to turn off anything, no need to drop performance or screen brightness.. just pure enjoyment of the full potential without worrying battery problem.. just get a spare.
cabloomi said:
@adyscorpius
everyone has there preferences and there needs in a phone. and there own settings. and this is a Battery discussion thread. we will be doing many performance and voltage mods, so everyone could choose the settings that suits them. now please dont post aggressive post like that, im not stupid. i know that my settings are very low.
but for my most played games and most used apps. it doesnt seem to effect my performance, so im comfortable with my settings
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I didn't mean to be aggresive and sorry if you felt like that. All I mean is, there is a limit to which you can undervolt/underclock your phone without losing the functionality or speed. While underclocking to 1.0 ghz or 1.2 ghz sounds kinda normal, going all the way down to 800 Mhz and that too only on two cores is like running Galaxy Ace Dual Core instead. Why would I want to spoil my S4 for it?
That is all that I meant. And the phone is normally shelling out a good day's use in normal usage. Why bother so much about battery really???
My S4 i9505 came with MDE ROM from the factory, apart from doing dirty flashes over dirty flashes, finally someone came up with a recovery which is working. So i've :
1. Formatted system , cache , dalvik
2. Loaded in Djembey's stock slim deodexed ME2 ROM.
3. Using PimpMyROM, did some moderately less aggressive tweaks.
4. Capped the Max frequency at 1674MHz. Interactive gov, Noop sched.
5. Fully charged and unplugged.
6. Fully on 3G . Gmail sync for calendars, contacts, mail, keep, notes. Moderately heavy on Gtalk and Whatsapp. Browsing news and websites.
Observed 4 hours screen time.
Almost 15 hours of total usage + standby (This doesn't mean much, screen time depicts usage time more)
The phone still feels warmer than S2, under operation.
I've yet to try faux kernel yet, but i doubt it would get much better than this. The physical limit i feel is on the CPU, HD AMOLEDs, and the modem itself under normal usage.
Feel free to comment.
Hi,
hope you may be able to help. I have been trying almost everthing to increase the music volume as the s4 does not drive my senheiser headphones as well I would like. Is it possible to increase the gain through a kernel mod somehow?
Wow you're really random. This thread isn't even remotely discussing about the issue you raised.
Try the omega ROM thread, see if the functionality list includes volume hack.
Sent from my GT-I9505 using xda app-developers app
How does one go about disabling two of the cores ? c:
I have two U11 (I'm going to return one, or both) and I noticed significant differences in terms of battery life between them.
Running PCMark battery life test, auto-brightness OFF, brightness MAX, one phone consistently gets 4h53 of screen on time, and the other one 5h08 (from 100% to 20% battery). That's a 5% difference and it's not negligible. Phones are the same otherwise in terms of apps installed. Problem is, the phone that has the worst battery life starts apps a TINY bit faster...
So the bottom line is, phones have significant manufacturing differences.... and I don't know which one to return.
They have same firmware and all identical? are you sure? maybe some app is configurated different or something.. or one battery its more degraded
5% is close negligible. I've got two U11 and they don't perform any differently. You aren't going to get identical numbers on two different handsets running benchmarks.
Hardware parts may be more or less efficient than each other. Radios on one device may be a few percent better. Honestly just send one back and get it done with. You also forget about coy CPU variances (no two chips are the same).
Different bin could be the reason there is a slight difference.
Ivancp said:
They have same firmware and all identical? are you sure? maybe some app is configurated different or something.. or one battery its more degraded
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Hardware/ firmware / software is identical.
Galactus said:
5% is close negligible. I've got two U11 and they don't perform any differently. You aren't going to get identical numbers on two different handsets running benchmarks.
Hardware parts may be more or less efficient than each other. Radios on one device may be a few percent better. Honestly just send one back and get it done with. You also forget about coy CPU variances (no two chips are the same).
Different bin could be the reason there is a slight difference.
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Well the geekbench and 3D mark are exactly the same (like give or take 0.1%).
ppaasseeii said:
Well the geekbench and 3D mark are exactly the same (like give or take 0.1%).
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Doesn't mean a battery benchmark is going to be within 0.1% the same as when you look at Youtubers who benchmark multiple of the same device and get somewhat different Antutu benchmark results.
5% is nothing to fuss over
Galactus said:
Doesn't mean a battery benchmark is going to be within 0.1% the same as when you look at Youtubers who benchmark multiple of the same device and get somewhat different Antutu benchmark results.
5% is nothing to fuss over
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It's like starting with a battery at 100% vs starting at a battery at 95%. For the rest of the life of the phone. Kind of a big deal.
Anyways, I'm running another test now with a low screen brightness, in case one screen was brighter than the other one (at max brightness) and drained more battery, I'll keep y'all posted.
Try with all radios (wi-fi, gsm, bluetooth, nfc, gps) off, even in location settings (disable scanning nearby devices for improved accuracy), and force stop all installed apps before the test. That gives me about 10 to 15 % increase on AnTuTu score. Maybe log cpu load and speed while testing as well.
I agree 5% is not a big deal, but would definitely keep the longer standing
Edit: force stopping because you may have installed the same apps, but most background processes won't load until you first time run their app, so one of the two "identical" devices may actually be running less apps in background. Best for testing would be to factory reset both devices and not load anything into them nor change any settings except the backlight for test.
How do you use both phones in the same manner to expect same result? You text same person with both phones making sure time taken to perform the task is same for both? And different phones have different usage pattern hence the 5% difference..??
Besides....that's 15mins. I definitely consider that as negligible. A 20% difference would be something to concern yourself about.