Android O allows you to display the battery percentage in the status bar (in a legible way) : r/Android
Android P lets you disable some of System UI and Android System's notifications, like battery, screenshot, car mode, and more
Battery Drain - System UI - OnePlus Community
Simple Solutions: Fix Android SystemUI Has Stopped Error- Dr.Fone
System ui battery overnight drain 50% - Android Forums at AndroidCentral.com
Android M Feature: The System UI Tuner Now Lets You Shut Off Icons in the Status Bar
What is com.android.systemui | Hidden Menu in Android
How To Enable System UI Tuner on Android 6.0 Marshmallow (Battery Percentage, Demo Mode, Quick Settings Toggles) - NaldoTech
How to Reduce Battery Drain on Your Samsung Galaxy S3 by Fixing Android System Usage « Samsung Galaxy S3 :: Gadget Hacks
System ui battery overnight drain 50% - Android Forums at AndroidCentral.com
How to Enable Battery Percentage in Android N 7.0 via System UI Tuner – No Replied
How to add the battery percentage to Android 6.0 Marshmallow - 404 Tech Support
How to Find Android's Hidden Features: UI Tuner and Developer Mode Settings
My S10 no longer make notification sound when battery is fully charged - Android Community
Battery usage (com.android.systemui)? : r/GalaxyS8
System ui battery overnight drain 50% - Android Forums at AndroidCentral.com
SystemUI Tuner 320 Download Android APK | Aptoide
com.android.systemui has stopped - Basicknowledgehub
Having battery drain due to "com.android.systemui" today? Vote on this issue! - OnePlus Community
How To Fix "Unfortunately the process com.android.systemui has stopped" Error On Android ? - video Dailymotion
Why is the Samsung One UI Home draining the battery faster? - Quora
Im getting error message- " problem reading your battery meter", how to fix it? - Google Pixel Community
System ui battery overnight drain 50% - Android Forums at AndroidCentral.com
How I improved the efficiency of an Android system app (and why) - Greenspector
Hidden Android 6.0 System UI Tuner & How-To - DroidViews
