[Galaxy S6 General] MysticGolem:
[MENTION=4732713]poczynek[/MENTION]

I have a GS4, and I'm looking to get a GS6 soon.

I have read your post and I am not sure if what you claim will bring any evident increase in battery life at all.

1. Greenify - What does it do? Why should I greenify an app? What apps/services did you greenify to give you an increase in battery life?

I can't say for sure but if I ran my GS4 without disabling apps vs disabled apps I bet the battery life/screen on time would be similar.

However I did disable a whole bunch of Samsung and other bloatware apps that came on my phone because I don't want their bugs or services to be running unnecessarily.

I have a looked at Greenify to some detail and thought to myself why bother? All of the services and apps that are running are fine...why would I need another app "Greenify" to manage something that is native in Android which is to simply disable bloatware apps.

Please provide a real example of what you would Greenify, as opposed to simply disable and what/how it benefits you?

I think I have over 70 apps disabled on my GS4 because they are things that I don't use.

2. Google Now - well this depends on if you use Google Now Everywhere, with it's ability to talk to the phone by saying "OK Google". In addition, Google Now has that card system which will send you news and other related cards based on what "you" the user configures. I'm not sure if you do setup all of these cards results in a great amount of battery drain either. I personally don't use Google Now voice activation or the cards, but I have not disabled the app.

I can agree with you that Google Now's voice system will drain the battery, but that's expected because it is always listening (if you enable that).

3. Location Services - by this you mean the GPS/Cell/WiFi location capabilities? I can tell you that I leave my GPS on GPS Only mode. I don't want my phone to use cell towers or WiFi to help improve upon the location of me. I have had no issues with doing this. I do believe if I use cell towers and WiFi to improve my location then the battery drain will be higher, but wouldn't that be dependent on if an app uses the location in the first place?

I mean, if I have my location set to highest accuracy and I leave my phone on over night, there should be no apps that would utilize the location services. Unless an app, for example Google Now decided to check where I am, I don't see the problem of leaving your location services set to high accuracy.

I personally use GPS only and I can confirm that no app triggers the location services during the day or night unless I open an app that requires it, for example Google Maps or a Weather app that I may be using the GPS to gather my location information. PS: I use AccuWeather and I have disabled use GPS for location and rather it uses my actual location based on my city and state.

4. Auto Brightness - although Samsung has one of the best auto brightness sensors for Android, there is much controversy (google it) that Android drains a lot of battery when using Auto brightness because it has to constantly use the light sensor to determine your screen's brightness.

When I got my GS4 I immediately disabled auto brightness and I manually control it, simply have 3 settings. I have 10% brightness for day time use, 100% for outdoor/car use, and 10% with screen filter set to 20% for bed use (late night and early morning). I will be doing the same with the GS6.

I can't speak entirely for auto brightness and whether it saves or consumes battery life, but from my research, people should just manually control it as opposed to using auto brightness, the exceptions are iPhones and Samsung phones.

Furthermore, during my testing, I ran a Geekbench 3 battery life test on my phone with the following conditions.

WiFi, GPS = On

Screen Brightness 10%

Bluetooth, Mobile Data, NFC = Off

Result = 2 hours and 55 minutes (screen on time)

Same test with screen brightness 100%, result = 2 hours and 45 minutes (screen on time).

This shows that in continuous use the real world difference in battery life between 10% and 100% brightness is only 10 minutes. Remember this is for the GS4. I am not sure how the GS6 will handle both extremes in terms of battery life for the screen brightness. My guess is that there will be little difference between using 10% and 100% in real world numbers like shown above.

5. Facebook and FB Messenger - you state don't use it but don't pose an alternative, let's be realistic a ton of people use it, by simply stating don't use it and not providing an alternative is somewhat pointless. My GS4 is rooted and I have been using BetterBatteryStats (BBS) for 2 years now and I can say for certain that FB does not drain the battery. However I can see that FB and Messenger do create a lot of Alarms, about 10 - 30 per hour. But when I look for Kernal or Partial wakelocks I see no correlation to battery drain.

I have even removed both apps from my phone and used my phone during a regular work week and I have found no real world difference in battery life.

However it is possible that FB and Messenger could have had a bug that caused battery drain, I have physically seen this issue with Viber and cross checked with BBS to confirm. But that was an old version of Viber, and since then Viber has been working fine.

I personally helped Jango Radio fix their battery drain issues. For example you open the app press the home key, then you will see that your phone will be awake for as long as the app is sitting in the background. I told the dev team to fix it and they did. I used BBS and watch the Partial wakelocks to confirm the issue.

Your final statement of using Gsam is fine, I've used it too, no battery life monitor is perfect, but at least they can help determine if there is a rogue app.

In terms of performance, I agree with doing 0.5x for all transitions, it does make a big difference. Less waiting for apps to close/minimize or open.

In terms of rooting and debloating with Titanium backup, that is something that rooted users can do.

I agree uninstalling system apps/pre-loaded apps will give you some space back.

Freezing an app versus disabling an app...well disabling should be good enough for people especially since you don't need root.

If you freeze/greenify apps versus simply disabling apps you don't need/use I'm sure the performance improvements would be identical, however I don't think there is much of an improvement regarding either methods.

A simple way to test this is to take a stock S6, run a benchmark, like Geekbench, and then root the S6 and freeze everything that is not needed and run Geekbench again. If there is no real numerical change in the benchmark, then I really doubt you will feel a real world difference in performance.

Let me know what you think.