[ZTE Axon 7 Questions & Answers] Oki:
[MENTION=2720511]j77moduss[/MENTION], these are my comments on the battery extension app pack in blue:

Phone Signal (2g/3g/4g) + Wifi

1. Intelli3G (X) : Switch to 2g when phone off, turn off data when Wifi connected

2. PNF Root: Changes the pulse interval of the Cellphone and the Wifi

3. Auto Pilot: If phone signal drops bellow a certain value then the phone goes into airplane mode and checks every xminutes for good signal, instead of pinning all the time

4. Gestor de red wifi: Uses gsm towers to localize the wifi hot spots for the network you connect to. If you are in an area where you do not have a network it will disconnect Wifi. Good option if you forget, like me, to turn off the Wifi when I leave home

I leave wifi, bluetooth and LTE signal activated the whole day and night. During nigh I have about 1% drain so the cell phone signal (very low at home) or wifi are not significant energy drainers lately. Probably the monitoring task of those apps are consuming about the same wireless energy you are saving with them.

CPU / System Tweaks

1. BootManager (X): Turn Off apps in the StartUp list Usually you install things you need. Stopping push notifications removes part of the functionality, otherwise they are not started.

2. Auto Start Manager: Turn off apps in any event (aka if you turn the GPS on I do not want Google Maps to go on until I click it, etc) What are you using this for? GPS is not by any means a huge battery drainer in this phone.

3. ]CPU Turner: change governors / CPU speed in per profile configuration This is the main cause of battery drain. An optimized profile can even duplicate the screen on time.

4. Smart Booster Pro (X) : Control RAM and close apps as needed This is actually a very bad idea. Free RAM equals to wasted RAM. reading from RAM take less energy than reading from the flash storage. While the app is cached in the RAM it is not using energy until it is required. If you flush the RAM then next time your phone will use a lot more energy and time to reopen the app. This was an issue Jellybean. Nowadays clearing RAM is something we should avoid at all cost. RAM is a cache for the apps, so use it as much as possible.

5. HEBF Optimizer: Kernel Optimizer, FStrim,Zipalingn, Battery Savings, etc.. Filesystem optimizations could be improved by just switching to F2FS filesystem. This doesn't require zipaligns and it helps on saving energy and extending the life of your flash storage.

Wakelock / Sleep

1. DS Ahorro de Bateria (X): Deep sleep when screen off and control how often it wakes to ping Email/Whatsapp, etc..

2. Force Doze: Force doze right away after screen off

3. Amplify: Turn off wakelocks or control pulse

4. Greenify (X): Hibernate apps

5. No Wakelocks: Block all wakelocks per app, useful for killing wakelock of games or non notification apps, for example.

6. Power Nap: Stop wakelocks/services/alarms from waking the phone during standby

7. XDA forum thread: [Guide]0%[0,0%/h] Idle Battery Drain on Stock Rom (Xposed & Amplify Required!) from Celestial Fury . This is the BIBLE of wakelock management!!

8. Doze: Prevent apps from using cell or wifi internet connection when in sleep mode.

Numbers 1,2 and 6 seems to be somehow doing the same thing. What is the best from your point of view? why? Numbers 4 and 5 seems to be the same, however I do not find any use for them without losing functionality. No. 8 falls into the phone signal group. In this group the true game changer is Amplify.

Screen Savers

1. Color Changer: Set the screen Black and White. It is the only app that I have found that allows setting a widget to on/off both in the launcher and in the pull down notification menu.

2. Pixoff Battery Saver: Huge battery saver – Turn off (a.k.a black) leds of a pixel so you save battery, I can achieve 50% savings with acceptable resolution. You can generate also your own pattern.

3. Screen Filter: Filter to dim the screen

4. Screen Saver: Black

5. Any App that I can set black theme

6. Substratum: Theming app, I use Dark themes (paid for them): Domination / Inversion UI/ Swift Black

7. Boot Animation: Change your Boot animation to a dark one

8. TeamBlack: Change to black multiple apps: Whatsapp, Tapatalk,Playstore,Keep, etc..

9. GravityBox: Set swipe the notification bar on, so you swipe your finger left and right to quickly change the DIM.

We have one of the best screens in the market. This AMOLED Samsung panel is excellent. The absence of backlight is a great for battery savings so the more black you have, the less relevant the screen is for the SOT. Number 2 and 3 seem to be similar and I am curious about them and have my fears regarding the extra CPU required to process the screen. Which one is better? The big thing here is number 5. Number 8 is also interesting. The rest are not providing a significant advantage.

Battery Checkers and Wakelock Analizers

1. Wackelock Detector : Wackelocks / Greenify apps

2. GSAM Battery Monitor: Wakelocks / Plot

3. BetterBatteryStats: Wakelocks / Plot

I really recommend everyone to use Accubattery for at least one week to learn how to properly charge the battery. The rest of the statistics are provided by the las couple of apps you listed. Nonetheless all the battery apps are needed when you are actively tuning your phone, after a while they become useless garbage until you face another huge change such as a new ROM.

Miscellaneous

1. Root Toolbox Lite: Clean Dalvink / Cache after TRWP .zip installation This is useless in current OS. Now since the huge transition to the new ART (Android Run Time), the OS detects new installed apps so cleaning dalvik / Cache is just adding more useless drain to the battery since the AOT compiler has to process all the apps instead of only the new one. In the old times this was beneficial, not it is something you must do only if it is absolutely required.

2. Prevent Running: App will only execute if on intentionally clicked I am curius about this. what is the purpose of it regarding battery saving?

3. Battery Calibration: After each rom installation, reach 100% charge and erase Battery_Stats Why? Battery stats are aso wiped when you do a clean flash. If the OS is good enough it should take cate of recalibrating the battery. It only takes a few seconds.

4. Battery Draining: After calibration, a quick cycle of discharge to 0%.[/QUOTE] NEVER!!!!!!! There are 2 states really dangerous for the battery. One is full charge. If you reach full charge, it means that you have stressed the battery a lot in order to reach that state. New hardware battery managers just avoid reaching 100% charge just to extend the battery life. It is a common technique for PC laptops. Accubattery is one of the few battery managers that is actually focused in extending the life of your battery. You won't want to have 20% less battery after 1 year of charging it to 100% each night. Well, the second and most dangerous state for a Li-ion battery is to reach full depletion. A state of deep discharge can make it impossible to recharge again since some batteries require an extra kick not provided by the charger. Do never leave any device on until depleted, if you leave it fully discharged for a while, chances are that you will need to replace the battery. The bottom line of this is: avoid 100% charge, 85% is fair, as much as %90 and do NEVER reach full depletion. If you r phone reaches 6% just turn it off completely.

There are other ways to improve the battery such as switching to F2FS filesystem with optimized mount options. F2FS is specifically designed for flash storage. It reduces the write cycles and optimizes the use of the cache so it is far more energy efficient than the linux etx4. On the other side, it extends the life of your flash storage, including the emmc and the micro SD card die. Less writes means less wear.

Also avoid unnecessary apps, they will drain battery when rebuilding the ART AOL cache and requires extra processing for the launcher as well as for the OS in general.

I am quite happy you opened this thread with this discussion. There are other users around here such as [MENTION=5303441]JeromeLeung[/MENTION] also looking for the best performance vs. battery balance for the Axon 7.