How to turn off sleep mode on Xiaomi: step-by-step instructions

Many Xiaomi smartphone users experience a device’s screen go out at the most inopportune moment, interrupting reading or watching videos, which is due to the activation of a standard lock timer, which is often mistaken for a special “sleep mode.” In fact, in the MIUI or HyperOS operating system, the “Sleep Mode” or “Lock Timer” function is responsible for this, and understanding the difference between these concepts is the first step to solving the problem.

Turning off automatic screen damping not only increases the comfort of using the gadget, but also allows you to use the smartphone as a display or navigator without constant touch. However, it is worth remembering that the constant operation of the display significantly increases battery consumption. In this guide, we will discuss in detail all available methods for managing timers, setting profiles and hidden functions that will help you find the perfect balance between convenience and autonomy.

Before you make changes to system settings, it's important to make sure that the problem lies in the latency settings, not in the sensor or proximity sensor failures. Sometimes software conflicts can mimic sleep withdrawal, requiring deeper interventions in the system. We'll look at both standard methods through the settings menu and advanced control methods through the engineering menu.

Difference Between Lock Timer and Sleep Mode

Users often confuse the two, although technically they do different things. Lock timer is the length of time a screen burns after the last touch. It's what's most often meant when looking for a way to turn off sleep on shaomi. The standard setting range typically ranges from 15 seconds to 10 minutes.

Sleep mode (or “rest time”) is a software feature that restricts notifications and changes the color gamut of the screen at specified hours, usually at night. It does not force the screen to be extinguished, but may restrict access to applications.

• ⏱️ Lock timer – responsible for physically turning off the matrix backlight after idleness.
• 🌙 “Rest time” – software limitation of smartphone functions at night.
• 🔋 Energy saving is a background process that can force the screen to extinguish to save charge.

It is important to understand that you cannot completely disable the lock timer (make it infinite) with standard system tools. The maximum available value is usually 10 minutes. Unlimited operation requires special applications or root rights, which we will talk about below.

⚠️ Warning: Constant screen operation at maximum brightness can lead to overheating OLED-matrix and the occurrence of the effect of “burnout” of pixels, when static interface elements will forever remain on the screen.

Basic setting of screen waiting time

The easiest and safest way to increase the time to turn off the screen is in the basic settings of the system. This method does not require installing third-party software and works consistently on all versions of MIUI firmware. To get to the desired menu, you need to consistently go along the path of Settings → Screen and brightness → Sleeping mode.

In the list that opens, you'll see the available time slots, and the choice of "10 minutes" is the default maximum that developers have to offer, and if you want to keep the screen going longer, you're not going to be able to do that with standard means, and you're going to have to use third-party solutions.

It is worth noting that in some models with AMOLED-The screens have "Always On Display" mode, which does not cancel the lock timer of the main interface, but allows you to display hours and notifications while the phone is in a "sleep" state. This is a compromise solution for those who want to see information without always turning on the full screen.

💡

If there is no time on the list, try turning off Advanced Energy Saving in the battery settings – this can unlock hidden timers.

Use of the Digital Well-Being App

Modern versions of Xiaomi’s shell include a Digital Well-Being tool that can force your device to sleep or restrict app use. If your phone goes to sleep early, it may be that the “Sleep Mode” is activated in this menu, rather than the main screen settings.

To check, you need to open Settings → Digital Well-Being and Parental Controls → Sleep Mode. You can see the schedule that the phone is restricting functionality. If the slider is active, the phone will behave as if it is falling asleep: the screen will turn black and white, and notifications will stop coming.

Turning off this mode returns normal behavior to the smartphone, especially if you notice that the phone stops waking you up or responding to messages at certain hours, and users often forget about the timetable turned on and think that the device is malfunctioning.

Setting up the alarm clock and schedule of switching on

Special attention should be paid to the alarm function, which has its own screen behavior settings. In the Xiaomi Watch app, you can adjust how the device will behave when the signal is triggered. If the alarm rings, but the screen goes off immediately, the problem may be in the Smart Alarm Settings.

Go to the Watch app → Settings (three dots or gear) → Smart alarm. You can turn off a function that skips calls or limits screen performance at a given time. Also check the alarm settings: if you press the alarm for a long time, you open a menu where you can select the repeat and behavior of the device.

There is another nuance: the phone's on and off schedule. If the settings → Battery and Performance → On/off schedule is set to time, the phone will shut down completely, which is not to be confused with sleep mode. Make sure these timers don't conflict with your needs at night.

⚠️ Warning: Do not set an alarm for the time when Do Not Disturb mode is turned on with full content concealment, otherwise you may sleep because the screen will not light up.

Apps to turn off sleep timer

Because Android doesn’t allow users to set a “Never” value for a lock timer, it often uses third-party utilities to emulate sensor activity or use special permissions to keep the screen on, and one of the most popular solutions is the “Keep Screen On” app or analogues.

The way these programs work is simple: they create an invisible layer on top of the system or send microscopic signals to the system to prevent the timer from going off. These applications often require special permissions through ADB or superuser rights (Root) to operate.

For advanced users, a method of use is available ADB-When you connect the phone to a computer, you can type in a command that forces you to change the system timer, such as the adb shell settings put system. screen_off_timeout 600000 timer 10 minutes (maximum system), but there are modified commands for longer intervals.

adb shell settings put system screen_off_timeout 2147483647

This command tries to set the maximum possible time value (maximum 32-bit integer), which effectively disables the timer before the device restarts or changes the settings. However, on newer versions of Android and MIUI, this method can be blocked by security policies.

💡

Third-party apps are the only way to achieve infinite screen time without root rights, but they require permanent permission to work in the background.

The impact of energy saving on the screen

Aggressive battery optimization in Xiaomi smartphones often causes unpredictable screen behavior. Energy Saving and Ultra-Saving modes can force the time to lock, ignoring user settings. This is done to extend the life of the device from a single charge.

To rule out this factor, go to Settings → Battery and check the active profiles. If saving mode is on, try switching to Balanced or Performance. Also, go to the settings of the specific application (such as the navigator or reader) you are using, and select No Limits under Battery.

• 🔋 Background activity – allow the application to run in the background without restrictions.
• ⚡ Autorun – enable autorun for important applications so that the system doesn’t “kill” their processes.
• 📉 Memory optimization – eliminate the necessary programs from memory cleaning.

Sometimes it helps to turn off Adaptive Brightness. The algorithm can misidentify light conditions and reduce the brightness to zero, which visually feels like turning off the screen. Turn off this feature in the notification curtain or in the display settings for verification.

Frequent Questions and Problem Solutions (FAQ)