[Xiaomi Poco F3 / Xiaomi Mi 11X / Redmi K40] spiral5:
Hello guys, I want to tell you the adjustments that I have made to my Poco F3 and that have improved the battery consumption.

For those who have a very high battery consumption in principle with the Poco F3 inactive, I recommend doing this before starting step 1:

Reinstall the rom again, we go to Settings / About the phone / Miui version, where the number 12 is, we press and at the top in the 3 points we download the last package, which is the one we have, we reinstall it and we start with step 1 .

I would be grateful if you could comment on how things went with them. Greetings.

1.- DEACTIVATE AUTOMATIC UPDATES.

In this way we will avoid that the mobile is constantly looking for updates and therefore consuming battery.

1.1- We go to the Play Store and in Settings / General / Update applications automatically, we mark not update applications automatically.

1.2- Once this is done, we go to the Miui updates. We follow the route Settings / About the phone, click on the number 12 that is in the upper left as when we want to update

and then in the three points that appear in the upper right, we go to the update settings option and deactivate download automatically.

2.- DEACTIVATE THE WIFI ASSISTANT.

This option allows the mobile to automatically change the network, without us having to be aware of it, but it uses the battery unnecessarily. We are going to configure it to do it manually.

We follow the path Adjust / Wifi / Wi-Fi Assistant, enter and deactivate the option to select the best networks automatically.

3.- DEACTIVATE THE GAME TURBO.

This option is aimed at those users who do not use the phone to play, if so, deactivate it because it uses a lot of battery. I do not play much, rather little, even so I do not have it deactivated.

We go to Settings and in the search bar type game turbo. Mark the 2nd option that of Game Turbo Security, it will take you to the app, once inside, mark options that are next to the + sign, at the top right. Once inside, uncheck the Game Turbo option, it is the first.

4.-DEACTIVATE THE PRINTING SERVICES.

We have these services to connect to printers active all the time and the phone will be constantly looking for printers so that we can connect.

We go to Settings and at the top in the search bar we will write print. Click on the only option that comes out, now click on System printing services, once inside we will deactivate it. We will see that on the screen below, we have a blue bar with a text that says looking for printers in this way we prevent it from constantly searching.

5.-REMOVE BLOATWARE:

I have removed the following but it depends on each one, they could remove more.

Analytics.

Android Accessibility Suite

App Vault

Browser

Catchlog

Digital wellbeing

Facebook

Feedback

Freeform

Frequent phrases

Games

Google Drive

Google Duo

Google One

Google Photos

HybridAccessory

Joyose

MSA

Market Feedback Agent

Mi Browser

Mi Cloud

Mi credit

Mi pay

Mi video

MiConnectService

MiPlayClient

MiuiDaemon

Music

Notes

Quickball

Scanner

Screen Recorder

Services & feedback

SoterService

Uniplay Service

VsimCore

Weather

Yellow Pages

OTHER ADDITIONAL SETTINGS.

Let's go Developer Options.

-Registry Buffer Size, I have it set to 1 mega.

-Window animation level / Transitions animation level / Transition duration level. All three are by default at 1x, lower them to 0.5x.

-Display: Manual brightness, almost full, in dark mode

-Screen / Color scheme in Saturated.

-Screen / IA image engine, here both IA HDR enhancement and MEMC I have them activated, although they increase consumption they are worth it, the screen improves, both visually and in video viewing.

New edition on 04-22-2021: In addition to the previous additional settings, the refresh rate of the screen can also be lowered from 120Hz to 90Hz, you can see it here:

https://xdaforums.com/t/how-to-change-the-screen-refresh-rate-of-the-poco-f3-to-90hz.4265949/