Xiaomi smartphone users often encounter the incomprehensible term “surveillance” or simply notice that the screen goes out too quickly or, conversely, burns too much time. This problem is especially relevant for those who are used to pure Android or switching from other brands. In fact, this usually hides the setting of the lock screen timer or specific features of the MIUI and HyperOS shell.
It can be that the device does not go into sleep for too long, consuming the battery, or, conversely, locks at the most inopportune moment. Correctly adjusting the time before bedtime is a basic skill that every smartphone owner needs. In this article, we will discuss all possible causes and ways to eliminate them.
Don't panic if you see a delay or shutter speed message, most often it's a regular energy-saving system that you can flexibly configure. The settings interface may vary slightly depending on the firmware version, but the logic remains the same across all the brand's devices.
What is “creating shutter speed” in the interface Xiaomi
The term "surveillance" in the context of Xiaomi smartphones is not an official technical name, but users often use it to describe the delay before locking the screen.The MIUI system has many layers of optimization that can affect how quickly the display goes out after the last touch.The energy saving algorithms analyze your actions and can artificially prolong or shorten that time.
Often confusion arises from the translation of menus or localization features. What one version of the firmware calls “screen timeout” in another version may be labeled “Switch off delay.” It is important to understand the context: if you are talking about a camera, shutter speed is the time of opening the shutter, but in the screen settings it is only the time before going to sleep.
⚠️ Note: Do not confuse lock timer settings with Always On Display. is responsible for displaying information on the off screen and has its own separate settings for the running time.
In some cases, users understand "suspension" as sensor delay or interface response, but these are performance problems, not screen settings. This article is about setting the display time without user action. If you have a lagging interface, you need to look for a solution in the "About Phone" section and clean up the memory.
The main reasons for long or fast screen quenching
There are several factors that affect display behavior, first of all, manual settings that the user could change accidentally. The standard timer in settings takes precedence over most system processes. If it sets a value of 2 minutes or 5 minutes, the screen will burn that much.
The second reason is apps that block sleep, video players, navigators and readers often require a constant screen on, system permissions allow these programs to ignore the overall lock timer, check which apps are running in the background.
- 📱 Third-party launchers can intercept screen control and impose their timers.
- 🔋 Power saving mode can force the display to reduce the time to save charge.
- 👁️ The proximity sensor or light sensor may not work properly if the screen is closed with a film or cover.
Also worth mentioning is the Pocket Mode feature, which prevents accidental taps in your pocket, but can mistakenly lock the screen if the sensor is contaminated. Sensors cleanliness is key to the correct operation of automation.
Step-by-step: how to change the lock timer
The easiest way to remove unwanted shutter speed is to change the standard latency settings, so you don't need superuser rights or a computer connection to do that, but you can access the menu through a standard settings app.
First, open the Settings menu on your device. Find a section called Screen and Brightness or just Screen. Depending on the version of MIUI, this item may be in the Additional subsection.
Inside the menu, look for Sleep Mode or Sleep Timer. Click on it and you'll see a list of available time intervals, from 15 seconds to "Never." The optimal value for balancing convenience and battery savings is 30 or 45 seconds.
| Timer value | Impact on the battery | Recommended use |
|---|---|---|
| 15 seconds. | Minimum | For maximum charge savings |
| 1 minute | Average. | Standard mode for most users |
| 5 minutes. | High. | When reading books or without car scrolling |
| Never. | Critical | Only when connected to the charger |
Once you select a new value, the changes take effect immediately. No reboot is required. If the screen continues to behave strangely, check if the "Do not turn off screen" mode is on the developer menu.
Disable Always On Display and Extended Features
The feature is Always on Display (AOD) It allows you to display time and notifications on a black screen, which can be interpreted as not turning off the screen, when in fact only a fraction of the pixels are on. AOD It is in the same section of the screen settings.
To disable this feature, go to Settings → Screen → Always On Display. Here you can select the mode: “Always On”, “Schedule” or “10 seconds after touch”.
⚠️ Attention: AMOLED-In the screens, the constant burning of static elements can cause pixels to burn out after a long time».
It's also worth checking the Up to Turn function. If it's active, the screen lights up every time you pick up the phone. This isn't a malfunction, but it can be annoying. Turn off the option if you want the screen to light up on a button only.
Developer settings and hidden parameters
If standard methods don't work, maybe hidden settings are activated in the system. The developer menu contains settings that affect the behavior of the display. Be careful when changing the settings in this section, as improper settings can lead to unstable system operation.
To enter the developer menu, you need to click 7 times on the build number in the About Phone section. Once the "You've become a developer" notification appears, a new option will appear in the settings menu Additional or Advanced Settings.
Path: Settings -> About Phone -> (7 clicks according to MIUI) -> Settings -> Additional settings -> For developersIn the list of options, find the item Stay awake. If it is activated, the screen will burn constantly while charging. Turn off this switch if you do not need it to debug the applications. Also check the animation settings, sometimes they create the illusion of delay.
- 🛠️ Animation scale: Decreasing the value may speed up the response, but does not affect the sleep timer.
- 📡 Debugging by USB: must be switched off in normal use.
- 👆 Showing touch: visual effect that does not affect the screen.
The Impact of Third-Party Apps and Widgets
Often, the reason for not turning off the screen are apps you installed yourself. Launchers, weather widgets, news feeds and memory cleaners can have their priorities.
Check the list of newly installed apps. If a problem occurs after installing a program, try to delete it. Safe mode will help diagnose the problem: if the screen goes out normally in safe mode, then third-party software is to blame.
And especially, books and navigation apps, which often have built-in timers that override the system, and the settings inside the app can be more important than the general settings of the phone, and check the menus of each app.
⚠️ Note: Apps that request permission to "display over other windows" may block the transition to sleep mode.
Some smart widgets can also update data as an active process, removing unnecessary widgets from the desktop will not only speed up the interface, but also help to adjust the screen timer.