Skip to content
TechBone
Xiaomi

Guides for Xiaomi Mi 9 SE

11 guides

Battery & Power2

Show Battery Percentage in Status Bar

If your Xiaomi phone only shows a battery icon in the status bar, you have to guess whether you are at 40 percent or 25 percent charge. That icon shrinks as the battery drains, so the difference between a quarter and a third full is barely visible at a glance. Switching to a numeric readout removes the guesswork and helps you plan charging before a call or navigation session runs out of power.

Open
Battery & Power

Battery Optimization Settings for Individual Apps

If a messaging app stops delivering notifications until you open it, or a background app quietly drains your battery overnight, MIUI's per-app battery optimization is usually behind it. Some apps get frozen too aggressively, others are left completely unrestricted and keep running in the background. Getting this balance wrong either kills battery life or breaks apps that need to stay active.

Open
Battery & Power2

Set Battery Saver for Individual Apps

If one app drains your battery fast while another stops sending notifications on time, a single phone-wide power saving mode will not fix both problems. Xiaomi lets you assign a separate battery plan to each app instead of forcing every app into the same restriction level. Picking the wrong option for an app can either waste battery or delay important alerts.

Open
Battery & Power2

Turn Off Battery Saver Automatically After Charging

If Battery saver stays active even after your Xiaomi phone finishes charging, it keeps throttling performance and dimming the screen longer than needed. MIUI can switch Battery saver off on its own once the battery reaches a set charge level, so you don't have to remember to disable it by hand every time you unplug the charger.

Open
Battery & Power

Battery Saver: Extra Power Optimization Options

If Battery saver is switched on but your Xiaomi phone still lights up the screen for every notification, the standard saver mode is not doing its full job. Always-on display can also keep draining power even while Battery saver is active. Two extra toggles sit outside the main Battery saver screen and control exactly this behavior.

Open
Battery & Power2

Optimize Battery Usage

If your Xiaomi phone drains faster than usual, background apps and forgotten settings are often the cause. MIUI has a built-in scan that checks running processes and configuration and lists exactly what is costing you charge. You decide which of those suggestions actually get applied.

Open
Battery & Power2

Turn Battery Saver On or Off

When Battery saver kicks in on your Xiaomi phone, background tasks like email sync or downloads slow down or pause until you charge again. That can leave messages arriving late or apps failing to update in the background. If you want full performance back, or want to save power on purpose, you need to control this mode directly.

Open
Battery & Power

Auto-Disable Ultra Battery Saver at 50% Charge

Once your Xiaomi phone reaches around 50% charge, Ultra battery saver can switch itself off without asking, dropping all the restrictions it just applied. If you rely on the extreme power-saving mode staying active until you manually turn it off, this automatic behavior gets in the way. The setting controlling this is separate from the regular battery saver toggle.

Open
Battery & Power

Turn On/Off Ultra Battery Saver

When your Xiaomi phone drops to critical battery, apps stop refreshing in the background and the screen switches to a dark theme without asking first. That is Ultra battery saver taking over, and it can feel like half your phone stopped working until you know how to control it.

Open
Battery & Power2

Check Battery Usage Stats per App

If your Xiaomi phone drains faster than usual, it helps to see which app or function is actually responsible before you start disabling things at random. MIUI keeps a detailed breakdown of battery usage, separating screen time, standby drain, and individual apps, but this overview sits a few taps deep in the settings. Without checking these numbers, you're only guessing at what's eating your charge.

Open
Battery & Power2

Schedule Battery Saver Automatically

Turning Battery saver on and off by hand every night gets old fast, and it's easy to forget before you go to sleep. If you leave it running into the morning, background apps and notifications stay throttled longer than you need. MIUI lets you set fixed start and end times so the mode switches itself.

Open