When the screen timeout on your Xiaomi 15 Ultra is not working, the display may stay on longer than expected or refuse to turn off at all. This can drain the battery quickly and feel frustrating, especially when you rely on the phone to lock itself automatically. In most cases, the issue is tied to display settings, power options, or apps that keep the screen awake, and you can fix it with a few focused checks.
Why Your Xiaomi 15 Ultra Screen Timeout Is Not Working
- Screen timeout is set to a very long duration or Never.
- Battery or performance features are keeping the screen awake.
- Certain apps are preventing the phone from sleeping.
- Developer options are overriding normal display behavior.
- A temporary system glitch is affecting display settings.
Check the Screen Timeout Setting
If the timeout duration is set too long, the screen will appear as if it never turns off. Verifying this setting ensures the phone knows when to dim and lock the display.
Open Settings, and then tap Display.
Tap Sleep or Screen timeout, and then choose a shorter time such as 30 seconds or 1 minute.
Lock the screen and wait to see if it turns off automatically.
Disable Always On Display or Wake Features
Some display features can keep the screen active longer than expected. Disabling them helps the system follow the screen timeout rule again.
Open Settings, and then tap Always On Display and Lock screen.
Tap Always On Display, and then turn it off.
Check any options related to wake screen on notifications and disable them if needed.
Turn Off Battery or Performance Overrides
Battery and performance modes sometimes ignore screen timeout settings to prioritize speed or background activity. Turning them off can restore normal screen behavior.
Open Settings, and then tap Battery.
Tap Performance mode or Battery saver, and then turn it off.
Lock your phone and test if the screen now times out correctly.
Check Apps That Keep the Screen Awake
Some apps, especially navigation, fitness, or video apps, are designed to keep the screen on. If one of these apps is running in the background, it can override the timeout.
Open Settings, and then tap Apps.
Tap Manage apps, and then look for recently used apps that might keep the screen active.
Force stop suspicious apps and test the screen timeout again.
Review Developer Options
Developer options include settings that can prevent the screen from turning off. Even one enabled option can cause the timeout to stop working.
Open Settings, and then tap Additional settings.
Tap Developer options, and then look for Stay awake.
Make sure this option is turned off.
Restart the Phone
A restart refreshes system services and clears temporary bugs that can affect display settings. This simple step often resolves screen timeout issues immediately.
Press and hold the Power key, and then tap Restart.
Wait for the phone to boot up fully, and then lock the screen.
Check if the timeout now works as expected.
Once the screen timeout is set correctly and no features are overriding it, your Xiaomi 15 Ultra should lock the display on time again. This not only saves battery but also keeps your phone more secure during daily use.
FAQs
Why does my screen stay on even after setting a short timeout?
An app or system feature is likely keeping the screen awake. Checking running apps and Developer options usually solves this.
Can battery saver mode affect screen timeout on Xiaomi phones?
Yes. Certain battery or performance modes can override display behavior, which may stop the screen from turning off automatically.
Will resetting my phone fix screen timeout issues?
A full reset can fix deep software problems, but it is rarely needed. Most screen timeout issues are resolved by adjusting settings or restarting the device.
