[OnePlus 3T Guides, News, & Discussion] Nishidh:
Hello guys, I want to try to help everyone who has problems with battery life and performance.

First of all, I want to say that you shouldnt have any problems if you use your device in a normal way(calling ,social networking apps, playing light games etc)

A SOT of around 6-7h on mobile network or a SOT of 7-8h on WiFi is really good and in my opinion normal and you shouldnt need to worry about. Over night while you are sleeping (8h for example) your battery shouldnt drain more than 3-5%.

If you have much less SOT or much more battery drain over night, you should read the following steps and try them.

(I can tell you that my OP3/3t never drains more than 3-4% over night and I have no problem getting 6h SOT on mobile network or 6-7h or even more on WiFi use only. I have to say I dont use Facebook or twitter for example, but I have my Bluetooth always turned on because i use a mi band )

Please try the following steps and tell me if it did help you. (Please choose one option in the pool)

1. Activate doze mode and aggressive doze mode in developer options and change the animation scale

- Go into settings -> developer options -> Doze mode -> activate it

- Go into Settings ->Battery ->3 Dots Menu ->Agressive doze & app hibernation ->Tap the slider and activate for apps

- Go into settings -> developer Options -> Window Animation scale/Transitions Animation scale/Animator duration scale -> set them to .5x or even off

2. Install Greenify from Google Play Store and activate it

Activate it for every app you can, except for apps with a little blue cloud as they need to work in background to sync data. (WhatsApp for example)

3. Wipe cache after every update and from time to time (I recommend once a week)

Turn off your phone -> hold power button and volume down button -> release the power when your phone turns on -> select english by pressing the volume down button and then the power button -> go to wipe cache and data -> select cache (and nothing else!) and press the power button -> reboot now

4. Turn off potential power hogs you dont necessarily need

- For example turn off Bluetooth, GPS Location and Location history, Mobile Data if not in use, WiFi if not in use and NFC -> you can find them in settings under their name

- Also turn off things like gestures in settings: Go into settings -> Gestures -> turn them off

5. Use pocket mode

Settings -> Advanced -> Pocket Mode

6. Turn off Android Device Manager and Google Now Cards

- Settings -> Security & Fingerprint -> Device Administrators -> Android Device-Manager -> turn it off

- Open your Google App -> Settings -> Your Feed -> Turn off Feed

7. Configure your WiFi

- Settings -> Wifi -> tap the gear symbol -> turn off "Scanning always available"

- You can also turn off "Keep wifi on during sleep" but i dont recommend it as apps like WhatsApp will only receive messages when you turn your screen back on!

8. Use adaptive brightness

Use the little "A" in the dropdown settings menu next to your screen brigthness bar

9. Use a Browser that is developed for Snapdragon devices

I recommend using Gello Mod or TugaBrowser as they are developed especaily for using with a device with a snapdragon CPU to save battery -> just search for them in Google

10. Disable permissions of apps

Try disabling permissions of apps if possible. This should prevent apps from using your internet connection and staying in background keeping your CPU awake. Please be aware that some specific apps need some specific rights to work properly. Use the try and error method here.

11. If u have custom recovery installed you can use custom kernels such as ex kernel , blu spark etc for better battery and performance.

Link to ex kernel

https://xdaforums.com/oneplus-3t/development/kernel-elementalx-op3-1-00-t3521298

Link to blu spark kernel

https://xdaforums.com/oneplus-3t/development/kernel-t3516012

12.AKT are is another way to save battery and performance tweaks.(requires root)

Link to thread of AKT

https://xdaforums.com/oneplus-3/how-to/advanced-interactive-governor-tweaks-t3476589

13.Have a look at this thread too

https://xdaforums.com/oneplus-3/how-to/potential-fix-cpu-battery-drain-aosp-t3543369

If you follow these 10(Normal everyone can do)+3(require twrp/root) simple steps you should not have any problems with battery life or performance.

If you need any further help please ask and please share your suggestions and results!

Source one plus forums , XDA and me :D

This is a big guide and it's worth reading

Hit the thanks button if this helps:good: