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Since no one replied to this message in the official CM 5.0 thread. I have decided to create a new thread and hope to find a solution to this problem.
My alarm clock would stop working randomly ever since I flashed to CM 5.0, from Beta 4 to 5..2, the problem persists. If i set an alarm that is about one hour from now, it would go off. But the real alarm I need which is supposed to go off at 8 am in the morning never goes off. Anyone had similar problems? I read Cyanogen's warning about the alarm clock problem. But seems he's just trying to remind you to reset your alarm after flashing to CM. Unluckily, I've reset my alarm numerous times and it never goes off in the morning.
Anyone can give me a hand? Thanks in advance! Overall, CM is a great ROM which gives me the option to use open vpn, which is vital for me since I'm living in China behind the GFW.
Are you by chance using any taskillers?
I do use a task-killer program. But I always keep the clock app on while i'm sleeping to try to make sure the alarm goes off on time. But it never does in the morning.
Don't use task killers on the N1, there really is no need.
cyanogen said:
Don't use task killers on the N1, there really is no need.
Click to expand...
Click to collapse
I wouldn't say that's accurate... The phone does slow down noticeably when you have 20-30+ things open
Sometimes a lot of them are running as well (using TasKiller, a lot of Yellow, including Camera, Gmail etc even when not in use and no emails being downloaded). This probably affects battery life as well.
Paul22000 said:
I wouldn't say that's accurate... The phone does slow down noticeably when you have 20-30+ things open
Sometimes a lot of them are running as well (using TasKiller, a lot of Yellow, including Camera, Gmail etc even when not in use and no emails being downloaded). This probably affects battery life as well.
Click to expand...
Click to collapse
Do you have any evidence to back this up? Yes this was a problem on older devices because many things would be fighting over the tiny amount of RAM.
You'll see lots of processes running but that's just the way Android works. Since it doesn't really benefit from simple caching like a normal linux system would, it just keeps everything running and kills unused stuff when memory is low. Most of the things you see running are either paused and using no CPU, or are services that would be periodically launched anyway.
http://developer.android.com/guide/topics/fundamentals.html#lcycles
Keeping these processes alive should actually be saving you battery rather than using it. It's more expensive to launch and restore the state of an application or service after being killed than it is to simply resume one that's been paused.
cyanogen said:
Do you have any evidence to back this up? Yes this was a problem on older devices because many things would be fighting over the tiny amount of RAM.
You'll see lots of processes running but that's just the way Android works. Since it doesn't really benefit from simple caching like a normal linux system would, it just keeps everything running and kills unused stuff when memory is low. Most of the things you see running are either paused and using no CPU, or are services that would be periodically launched anyway.
http://developer.android.com/guide/topics/fundamentals.html#lcycles
Click to expand...
Click to collapse
Yes. The phone gets slow when TasKiller shows 30 things in it. I click close all, and it's faster. Do you know my personal experiences more than I do?
Paul22000 said:
Yes. The phone gets slow when TasKiller shows 30 things in it. I click close all, and it's faster. Do you know my personal experiences more than I do?
Click to expand...
Click to collapse
I think there is likely one or two specific misbehaving applications that are giving you trouble, rather than the way the system works as a whole, thats all.
I think what Cyanogen is saying is that android does not handle running processes the way other os's do They have a lifecycle that is non-obvious to someone just looking at a process list. If you insist on killing tasks outside of the activity/service lifecycle they you _will_ get service failures (like the alarm clock) its up to you what you value more.
I have not installed any sort of task manager (outside what's in astro but I don't use it) and never see any noticeable slow down.
Anyway - back on topic.
Yes I have the same issue, never had it before.
Since flashine 5.0.2 my alarm doesn't work in the morning.
The linux kernel keeps a buffer cache of recently used files in RAM. So whenever an application wants to access something on the flash, instead of going to the flash file system, it can just get it from the file buffer cache in RAM, a significant speed increase.
If the RAM is currently being taken up by unused android apps, then that leaves less room for the buffer cache, so in theory, by killing off unused android apps more quickly, that will allow the linux kernel to allocate more space for the buffer cache and thus speeding up the system.
Am I way off here?
Dave
cyanogen said:
Do you have any evidence to back this up? Yes this was a problem on older devices because many things would be fighting over the tiny amount of RAM.
You'll see lots of processes running but that's just the way Android works. Since it doesn't really benefit from simple caching like a normal linux system would, it just keeps everything running and kills unused stuff when memory is low. Most of the things you see running are either paused and using no CPU, or are services that would be periodically launched anyway.
http://developer.android.com/guide/topics/fundamentals.html#lcycles
Keeping these processes alive should actually be saving you battery rather than using it. It's more expensive to launch and restore the state of an application or service after being killed than it is to simply resume one that's been paused.
Click to expand...
Click to collapse
I would have to agree with Cyanogen on this one. When I first got my N1, I looked towards task killers to help alleviate slowdown, but in the end, I think it's just the placebo effect in a way; you did something to try to solve the problem, and so therefore you perceive a difference.
In other words, task killers aren't needed on this beast of a phone. As for battery life (if that's an issue), look into SetCpu.
Thanks for the reply Cyanogen. I think not using task-killer, or at least not killing the clock app got my alarm working this morning. But I use task-killer not for the purpose of saving ram, but for using less data. Some programs such as facebook or a twitter client would try to connect to the internet every once in a while. I'm on a low data limit plan in China. So I don't want those programs to eat up all my data. When I'm on wifi at home, I don't worry about that. Thanks again.
Same problem. Don't use taskkillers, flashed last CM last night and didn't wake up on time this morning - alarm didn't work, thought I checked that clock icon was on place on notification bar
amwayorlando said:
But I use task-killer not for the purpose of saving ram, but for using less data. Some programs such as facebook or a twitter client would try to connect to the internet every once in a while. I'm on a low data limit plan in China. So I don't want those programs to eat up all my data.
Click to expand...
Click to collapse
Have you thought about using something like APNDroid or Toggle Data, to just switch off the cell data when you don't want to use it?
Or, Modify the behavior of the applications you don't want using data?
I have my facebook and twitter for example set to manual update only (for battery saving purposes) because there's nothing there that is critical important info, and I don't need to be notified.
Nice thread though, I'm pretty sure I try to keep people informed that task-killers aren't needed and cause issues, everywhere where it comes up. I find humor that people will still argue, even with a developer, this fact. I've had 150+ hours uptime with no slowdown (and 30 apps running) on the stock rom (without highmem support).
bofslime said:
Or, Modify the behavior of the applications you don't want using data?
I have my facebook and twitter for example set to manual update only (for battery saving purposes) because there's nothing there that is critical important info, and I don't need to be notified.
Nice thread though, I'm pretty sure I try to keep people informed that task-killers aren't needed and cause issues, everywhere where it comes up. I find humor that people will still argue, even with a developer, this fact. I've had 150+ hours uptime with no slowdown (and 30 apps running) on the stock rom (without highmem support).
Click to expand...
Click to collapse
Then please inform us of a thread that can verify what you all are saying. Not in an argumentative tone, my linpack score drastically improves after 16 hours of uptime, and a task-killer.
Rom:CM 5.0.2 -OC Kernel
wesbalmer said:
Then please inform us of a thread that can verify what you all are saying. Not in an argumentative tone, my linpack score drastically improves after 16 hours of uptime, and a task-killer.
Rom:CM 5.0.2 -OC Kernel
Click to expand...
Click to collapse
This has basically been discussed into the ground. In my eye's, its a fight vs what I like to call "Windows XP mentality", and that there was benefit on phones like the G1. With the copious amounts of memory on the N1 and droid, they cause way more harm, and immeasurable good (if any).
Summary thread: http://forum.xda-developers.com/showthread.php?t=627836
I've linked to quotes from others.
Threads/posts of interest: http://forum.xda-developers.com/showthread.php?p=5494890#post5494890
And: http://forum.xda-developers.com/showthread.php?p=5298630#post5298630
Well, this discussion is very interesting, but lets return to our problem with non-working alarm.
Aster installing a CPU profiling app, I noticed that my email app is taking up 50% of cpu most of the time. After some research, turns out that when it can't connect, it falls into an endless sync cycle, devouring cpu.
Amazingly enough, the fix so far was to change the sync interval from 15 min to PUSH. Obviously pushing it will waste way less cpu than running processor at 50% all the time for nothing (even on a fast wifi).
I'm running latest cyan. Anybody else see that problem?
I'm interested in knowing which CPU profiling app you installed
SeePU+ ?
DarkDvr said:
... Anybody else see that problem?
Click to expand...
Click to collapse
Yes, thus I set Twitter, Beautiful Widgets Wheather, etc.,...to Push!
I'm interested in knowing which CPU profiling app you installed
SeePU+ ?
Click to expand...
Click to collapse
Quick system info pro.
I like it the most, but don't leave it running all the time. To kill it, just click on it in it's processes view.
Anyone here using it? what is this app for? is it worth buying? does it give u battery life? im really interested but i cant find no videos on it on youtube. please share your thoughts.
Yeah, I have it. First app I bought for my SGS. Tasker allows you to automate a lot of actions on an android phone based on conditions like time, location, application usage, a lot of stuff. It is very powerful but may be complicated at the start. There are a lot of good ideas on the web.
It doesn't give you battery life but you can automate settings which can help battery life.
Some of the things I have set up:
- Turn on GPS when I start Google maps. Turn it off when I exit.
- When I plug in headset, bring up a dialog which allows me to turn on radio, music player, or podcast player (this is worth the price of software).
- Turn on the internet every 2 hours for 5 mins to automatically sync gmail, etc when at work.
There are plenty of other examples on the web. My suggestion is to look at Tasker or Locale as these are two of the main products which do this. Tasker from what I hear is more powerful but Locale is simpler to use and has a heap of Locale plugins.
extremly helpful and cool program. But i have turned it off now for a while to se if it caused heavy lagg. Have anyone else with sgs experienced lagging caused by tasker?
I have not noticed any lag but I have Ryan's Lag fix installed. I do have a sneaking suspicion that if you have a lot of profiles running particularly time based, it may slow your phone down. FYI, I have 13 profiles I have set up and 6 of those are time and date based and I don't see any performance slow downs. I have this set to ignore on my task killer so it is always on.
I apologize in advance if someone has covered this, but I discovered a nice little trick thats simple to perform and gives me roughly 2-3x additional battery life than before (if not more).
Recently I got a little fed up with my ~8hour battery life and decided to get a 3500mAh battery. Even after receiving my brand new fat battery, I was still only getting about ~16-18 hours on a charge. Well I decided to get to the bottom of this and see just what exactly was sucking away my juice.
I managed to find a handy little app named "PowerTutor" that gives a great reading of what applications are using power and approx how much. It even separates network usage from processing jobs as far as power consumption is concerned. After taking a few samples over various time frames and conditions I came to the conclusion that the biggest power consumer was actually the Google frameworks.
The simple fix to this:
Download "DroidWall", an excellent application that allows you to black or white list applications from data use. After blacklisting Google app frameworks. I saw a very significant change in battery life.
The next thing I did was grab "SetCpu" and set up a profile on event "Screenoff" to go to "powersave" mode and set my frequency 537max and 245min with a low priority. I set an additional profile for when my phone is active at full the frequency range with on demand scaling. Theres are better configurations out there I'm sure but this is just what I used on the fly. Feel free to set it up however you'd like.
I've been using my phone all weekend with moderate use (text, web, videos, etc) and now see an amazing standby time. The only problem with blocking the Gapps frameworks from having net access is that gapps specific applications can no longer update in real time. I'm a Google voice user so this started to present itself to be a problem. Luckily GVoice is capable of forwarding text to phone. And when you do that the Gvoice app will pick up the standard text as long as you have the option selected from your Gvoice account. So I just disabled standard text notifications on my phone. Now when I'm sent a text, Gvoice picks it up and I can respond with Gvoice just as nothing had changed.
Yes I already know turning your data connection would in theory do the same thing as listed above. However this way you dont have to toggle your data on and off constantly.
Hope this helps someone, if you get a chance to try this out post your results!
Interesting, may give this a shot
Sent from my PC36100 using XDA App
Breaker253 said:
The next thing I did was grab "SetCpu" and set up a profile on event "Screenoff" to go to "powersave" mode and set my frequency 537max and 245min with a low priority. I set an additional profile for when my phone is active at full the frequency range with on demand scaling. Theres are better configurations out there I'm sure but this is just what I used on the fly. Feel free to set it up however you'd like.
Click to expand...
Click to collapse
Everything else you said has peaked my interest and so when I have time I will test these suggestions.
However, I just wanted to point out that the powersave governor locks the cpu speed to the min frequency and so there really is no reason to specify a max of 537 or anything else because the powersave governor won't allow the cpu to scale beyond the min value.
On the opposite side, the performance governor locks the cpu speed to the max freqeuncy and won't allow the cpu to scale below the max value.
If you intend on using the powersave governor and want your cpu to not go above 537 then set the min value in setcpu to 537. As I said earlier, the powersave governor will lock the cpu at the min value so if you do this you will always be at 537 during screen off.
Breaker253 said:
.....set up a profile on event "Screenoff" to go to "powersave" mode and set my frequency 537max and 245min with a low priority.
Click to expand...
Click to collapse
Why set Max to 537? Powersave pegs CPU frequency to min value.
Sent from my PC36100 using XDA App
ah, didn't know that. I thought that on power save it just stepped the cpu frequency up slower and dropped it much faster. thanks for the correction .
Sent from my PC36100 using XDA App
Breaker253 said:
ah, didn't know that. I thought that on power save it just stepped the cpu frequency up slower and dropped it much faster. thanks for the correction .
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
That's the conservative governor which I personally use for sleeping and I don't change the max/min values either.
How does this affect google maps navigation, push gmail, and things like that?
Gmail seems to be pushing fine for me. Maps works also but you'll need to have gps active.
Sent from my PC36100 using XDA App
Question for you OP. you said you blocked google frameworks. I don't use google voice, so that part won't be an issue. My question is, what else is affected by the framework being blocked?
lovethyEVO said:
Everything else you said has peaked my interest and so when I have time I will test these suggestions.
Click to expand...
Click to collapse
Just since I see this error all the time, the phrase is "piqued my interest," not "peaked."
From what I've experienced, clocking too low can use more battery since the cpu has to stay at the max clock for longer periods of time to complete a task, as it is not as efficient at performing it.
I've only noticed location services (not gps) blocked. Gmail seems to be receiving updates as far as I can tell. Other than that everything seems to be working as our should.
Sent from my PC36100 using XDA App
Breaker253 said:
I've only noticed location services (not gps) blocked. Gmail seems to be receiving updates as far as I can tell. Other than that everything seems to be working as our should.
Click to expand...
Click to collapse
Looking at the DroidWall screenshot, it appears the calendar and contacts won't sync automatically either. If it wasn't for that I'd probably give this a try.
eventer289 said:
Just since I see this error all the time, the phrase is "piqued my interest," not "peaked."
From what I've experienced, clocking too low can use more battery since the cpu has to stay at the max clock for longer periods of time to complete a task, as it is not as efficient at performing it.
Click to expand...
Click to collapse
I posted that with my evo using swype and I wasn't paying attention to the auto correct. Thanks for the correction though.
Going to keep my eye on this thread.... I use google calendar EVERY day, so I need that.... Anyway to unblock certain apps?
so if i already manually sync gmail, contacts, facebook, and gCalendar, will this still help me?
Unless you temporally disable the blocking of frameworks, calendar and contacts won't be able to update with what's NOT on your phone already. You can still use your contacts and calendar, it just won't update if you made any changes from the web and not on your phone.
Sent from my PC36100 using XDA App
I'm using juice defender on my ego and it seems to work great. I'm also using setcpu to knock the sped down to 245 when the screen is off. It's also set to gradually step the speed down as the battery drains. At 75% its at 844 at 50% its at 614 and at 25% its at 422. All of them have a min of 128. My off screen life is insane. In 7 hours it went from 100% to 90% with some light use and mostly sleep time. Right now I'm at 65% with a good 3 hours of net use on my wifi and a few other things. Before all this I was getting 8 hours total.
Once a get a good week of use ill try out droidwall. It looks neat and I like its charts
Breaker253 said:
Unless you temporally disable the blocking of frameworks, calendar and contacts won't be able to update with what's NOT on your phone already. You can still use your contacts and calendar, it just won't update if you made any changes from the web and not on your phone.
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Will changes to the calendar and contacts from phone still sync to Google automatically?
Wouldn't most of this be achieved by simply turning Auto-Sync off? (can be done using the Power Control widget for easy access.) Or am I missing something?
This is what I do when I want to save power. Then you can manually sync gmail and things whenever you like from within the respective apps.
I've gotta feeling you used latitude in google maps and also have the location settings all checked under settings-> location in the main android settings panel. If your not on WiFi this will drain your battery pretty decently, and even more so if you are in not so great coverage.
This thread will only contain detailed but simple and easy to understand information and broken english because I'm Mexican and I live in Mexico.
This is my first thread in XDA, this phone is my first smartphone or touchscreen phone I got it a year a go when It came out and this post will have all my knowledge about SGS2 battery saving tips I've got from this year.
Some settings might sound dumb, like why would you disable a core if you paid for two, and why would you want lower brightness if you have a SAMOLED+ screen which is brighter than SAMOLED HD, well those settings are optional and you have to find which ones will help you when you need battery badly for an emergency or something.
First let's make a list of all the apps that you need to use and what they will do, all the apps and tips are optional but if you use all of them you will have some amazing battery life!
*This thread only contains free apps so you don't need to spend $ at all!*
#1 Screen filter: https://play.google.com/store/apps/...ch_result#?t=W251bGwsMSwxLDEsImNvbS5oYXhvciJd
This app is really useful because it allows you to go on lower brightness than what your phone allows you to! and if you have sensitive eyes it'll help at night, when I really NEED BATTERY I lower the brightness as much as I can (Don't go too low because you won't be able to see s**t.
while in use, screen filter make the install button in the package installer unusable; if you want to install an app, disable screen filter first
#2 Rescan Media ROOT: https://play.google.com/store/apps/...SwxLDEsImNvbS5hZGR6Lm1lZGlhc2Nhbm5lcnJvb3QiXQ..
This app will allow you to enable and disable media scanner whenever you want. Media scanner drains ur battery a lot specialy if you're using a JB ROM! I don't know if it'll be useful with GB/ICS because I only tested it on a JB ROM, by disabling media scanner you won't be able to see pictures or videos from your gallery but you're able to play music, use this when you really need to save battery and you're not gonna use gallery.
#3 https://play.google.com/store/apps/...sMSwxLDEsImNvbS5yb290dW5pbnN0YWxsZXIuZnJlZSJd
BE CAREFUL WITH THIS APP! IF YOU'RE NOT SURE OF WHAT YOU'RE DOING ASK AN EXPERIENCED USER OR JUST LEAVE IT!
Titanium backup has an option to uninstall system apps but this one is free, just use it to freeze apps that you don't use and are always running, the apps I disabled are:
*Maps (I enable em when I need them)
*TvOut
*AccuWeather
*Movie Studio
*TalkBack
*Apollo (I use PowerAMP)
*Sound Search
*Voice dialer (Useless IMO..)
*SIM Toolkit (I don't know if this is safe to remove for all users but I had no problem)
*Trebuchet (I use Nova Prime)
*News & Weather
And you can disable other apps that you don't use, those are the ones I disabled.
#4 Startup manager: https://play.google.com/store/apps/...wsMSwxLDEsImltb2JsaWZlLnN0YXJ0dXBtYW5hZ2VyIl0.
This is my favorite, I don't know how useful it is but I hate to have apps I don't use running or on the background.
With this app you can disable the user and systemapps that auto start when you turn on your phone, they will start without any problem when you need them!
This app will give you more free ram! I don't know if the RAM on phones consume as much energy as PC RAM but I used it anyway..
The system apps I disabled are the following:
*Youtube
*Clock
*Email
*Download manager
*Media Storage (I guess you don't need this is you disabled media scanner already with the previous app)
*Gallery
Those are only the system apps, remember to disable YOUR apps that are always running on boot and you don't need them to be running (I only kept facebook, facebook messenger, nova launcher and whatsapp) I don't suggest you to disable many google apps, I think it gives problems when trying to connect to google servers (NOT SURE) disable them if you want and if it give you any problem just enable them again.
#5 FastDormancy Toggle: https://play.google.com/store/apps/...W5tb3JhbC5mYXN0ZG9ybWFuY3l0b2dnbGUuaTkzMDAiXQ..
First do a google search and check if your carrier supports FD, my carrier doesn't support it so I disabled it and you can uninstall this app after disabling it if you want.
#6 AdFree: https://play.google.com/store/apps/...DEsImNvbS5iaWd0aW5jYW4uYW5kcm9pZC5hZGZyZWUiXQ..
This app gets rid of the annoying ads, they consume battery because they use 3G to load and they're annoying anyway, just install it and after it downloads the host files and installs them you can uninstall this app if you want, if you start to get Ads again just install it again and update the host files and uninstall or you just can keep it and let it download the new host files.
#7 GetRIL: https://play.google.com/store/apps/...t=W251bGwsMSwxLDEsImNvbS5zaWJib3IuZ2V0cmlsIl0.
Some users have better batterylife after matching their RIL with the current modem, you can uninstall this app after installing the right RIL but I think the RIL will keep changing everytime you flash a new ROM. This app is supposed to keep you away from RIL crashes, try it. and uninstall after using it.
Ok that's it now let's move to the tips, some of them might have you tired already but I'll put them for the new users.
#1 If you're not gonna browse, use facebook or any app that requieres 3G just disable it, I have 2G most of the time because I only use whatsapp and gtalk the most.
#2 Disable WiFi, GPS, Bluetooth and Sync if you're not using it.
#3 Disable google now (It improves battery a lot according to some users)
#4 If you're lazy to control your brightness just set it automatic, I use the notification bar slide brightness from CM10 and I always have it really low.
#5 Try not to have too many root apps running on start up because SU makes the phone laggy when it tries to enable too many root apps.
#6 If you have a weather app set "refresh manualy"
#7 If for some reason after using all the apps from above you still have unwanted apps running just stop them manualy, I check running apps really often and stop them.
#8 Some people have better battery life with different modems, I always use stock modems so try different modems and check which one suits you better
#10 Don't let your phone charging overnight
#11 If you're REALLY need battery and you're on a trip only listening music with the screen off, set your CPU to 200 Mhz or 500 Mhz if you want, Music player is a light app but some music players keep going from 100-200 mhz to 800-1000 ..
#12 Try to enable the skip track with volume key from CM10/AOKP, this will save battery as you won't turn the screen on everytime you want to skip track and If you use the 200 Mhz max frequency you won't have to go through the lag to skip a track (If your galaxy lags a lot at 200 Mhz, some phones don't lag that much at that frequency)
#13 Disable BLN
#14 If you're not using the internet at all put flight mode
#15 Use dark or black wallpapers and themes, our SAMOLED+ Screen saves energy if you use black/dark themes/wallpapers
#16 If you have facebook and you need more battery try to log off your facebook and facebook messenger, it'll save you some battery (credits to Obagleyfreer for this tip)
Now let's get into the ROMs and Kernel subject.
I'm using Dorimanx 7.3 and I'm using JellyBam ROM at the moment but I change ROMs really often, I think JellyBam has vsync enabled so I guess a ROM without vsync and Dorimanx 7.3 will have better batterylife.
ExTweaks settings:
Easy.. Just go to recovery and go into specific kernel options and put Battery profile.. If you have ExTweaks plus you'll be able to change the profiles from the app and you'll see the Extreme_battery profile, enable it if you have ExTweaks plus.
After you set battery profile go to the CPU tab and put second core always off if you're just chatting and listening music you don't need both cores enabled.
Oh yeah and undervolt your CPU/GPU in ExTweaks, I have CPU UV -75.
If you did a charge cycle and your phone is at 100%, unplug it and go to the MISC tab on ExTweaks and Reset Fuel Chip and charge it again to 100%, I usualy reset it like 10 times after flashing a ROM, I unplug and reset and plug and like that a few times.. I'm not sure if it helps at all but I do it anyway.
**I think some users reported that slower charge gives better battery, in ExTweaks MISC tab theres an option for charging voltages, set the lowest AC/MISC:550mA USD:450mA (I haven't tested it but I will do it soon**
I'm adding more info to this thread and giving credits in a few minutes I have to eat dinner.
As I explained I'm from Mexico and this is my first help/guide thread in XDA, If you liked how I shared all my knowledge and want to help me with a donation feel free to do it, I'm from Mexico as some of you know this country is really poor and even 30 cents or 1 USD will help me, 1 USD is like 13 mexican pesos.. feel free to donate if you want, any amount will do fine.
Ok after trying to discharge my phone using Max brightness, both cores enabled, screen on all time, PowerAMP on speakers all the time with max volume, 1.5Ghz, Extreme_Perfomance profile I got 3 hours 30 mins screen time.. I couldn't take a screenshot cause I took too long to take it and I had media disabled Now I'm going to try with my settings and post the results! Please if you tried my guide and got amazing battery life post a screenshot of your battery graph and screen on time or tell us the results!
Mexico loves xda <3
Reserved ~~~~
Great! Thank you!! I'll try it all!
Gesendet von meinem GT-I9100 mit Tapatalk 2
Netjoker said:
Great! Thank you!! I'll try it all!
Gesendet von meinem GT-I9100 mit Tapatalk 2
Click to expand...
Click to collapse
Thanks If you have any question feel free to ask, I'll add a FAQ question and more details to the thread if needed, this is my first thread and I'm really noob at this I hope you guys help me to make this thread perfect and maybe even get sticky! This ALL you need for good battery life, I forgot some stuff but I'll add it once I remember it xD
I need enable the other CPU core
Sent from my SAMSUNG-SGH-I727 using xda premium
Mervingio said:
I need enable the other CPU core
Sent from my SAMSUNG-SGH-I727 using xda premium
Click to expand...
Click to collapse
What do you mean? Both cores will run on your Galaxy when you need them but the second core isn't enabled all the time, only when you need it.
Great instructions.I am using JellyBam ROM 20121022 – i9100 daily [OUT DA SPACE REL] with siyah v5.0b1
Well i underclocked my device to 100-500 mhz with 2 cores running all the time... voltages as low a i can... gpu 40 66 100 mhz... the only thing i took from this thread is the screen filter,thanks for that! now i usually get 7 hours screen time 2 days running
Elistheman said:
Well i underclocked my device to 100-500 mhz with 2 cores running all the time... voltages as low a i can... gpu 40 66 100 mhz... the only thing i took from this thread is the screen filter,thanks for that! now i usually get 7 hours screen time 2 days running
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Your welcome You should try the startup manager to get rid of the apps that auto start!
A handy tip to help battery life is remove Facebook app. It is a HUGE battery drain.
The best thing to do is to log onto the Facebook Mobile site then when you're on the homepage just save as a bookmark.
Now you can add the bookmark to your home screen as an icon.
It's just like Facebook app only faster, less bugs and battery friendly
Sent from my GT-I9100 using xda app-developers app
Obagleyfreer said:
A handy tip to help battery life is remove Facebook app. It is a HUGE battery drain.
The best thing to do is to log onto the Facebook Mobile site then when you're on the homepage just save as a bookmark.
Now you can add the bookmark to your home screen as an icon.
It's just like Facebook app only faster, less bugs and battery friendly
Sent from my GT-I9100 using xda app-developers app
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Thanks, I'll add it to the list of tips
Great post
One thing though: I would advice you NOT to fully drain your battery unless absolutely necessary. This will lower the full capacity of your battery. It's the same thing that happens to laptopbatteries. Many people let it run dry from time to time and this is one of the reasons people experience such a severe hit on laptop battery capacity over time.
This is also the reason why you phone will shut down before battery hits 0%. It's simply to spare the battery from degradation.
Sent from my GT-I9100 using xda premium
Thx !
abnesher said:
Great post
One thing though: I would advice you NOT to fully drain your battery unless absolutely necessary. This will lower the full capacity of your battery. It's the same thing that happens to laptopbatteries. Many people let it run dry from time to time and this is one of the reasons people experience such a severe hit on laptop battery capacity over time.
This is also the reason why you phone will shut down before battery hits 0%. It's simply to spare the battery from degradation.
Sent from my GT-I9100 using xda premium
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thanks, I removed the tip
nice!
here are some more facts about different batteries and their behavior. Remember that u have a lithium-ion battery in your smartphone:
h**p://batteryuniversity.com/learn/article/how_to_charge_when_to_charge_table
This supports also the posting from abnesher.
//sorry for masking the url with * but im not allowed to post urls cause i am new
thx alot i'll try it
Ingesting Read! But I suggest you to add this disclaimer to the Screen Filter section: "while in use, screen filter make the install button in the package installer unusable; if you want to install an app, disable screen filter first"
Hope it's useful for you
Sent from my GT-I9100 using xda app-developers app
PunkOz said:
What do you mean? Both cores will run on your Galaxy when you need them but the second core isn't enabled all the time, only when you need it.
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System Tuner works like a charm
Thanks for the tip!
Sent from my SAMSUNG-SGH-I727 using xda app-developers app
Ryther said:
Ingesting Read! But I suggest you to add this disclaimer to the Screen Filter section: "while in use, screen filter make the install button in the package installer unusable; if you want to install an app, disable screen filter first"
Hope it's useful for you
Sent from my GT-I9100 using xda app-developers app
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Edited, Thanks!