How to Fix Xiaomi Poco C81 Pro Screen Timeout Not Working

If your Xiaomi Poco C81 Pro screen timeout is not working, the screen may stay on too long, turn off too quickly, dim at the wrong time, or ignore the timeout duration you selected.

That can get annoying fast. It can drain battery, interrupt reading, make videos pause awkwardly, or leave your phone screen awake when it should lock by itself.

Most of the time, this is caused by a setting, app permission, display mode, battery feature, or temporary HyperOS issue. The Poco C81 Pro runs Xiaomi HyperOS 3, so some settings may look slightly different depending on your region and software version.

Start with the screen timeout setting first, then check apps, battery settings, and lock screen behavior.

Quick answer

To fix Xiaomi Poco C81 Pro screen timeout not working, go to Settings > Always-on display & Lock screen > Sleep and choose your preferred timeout duration.

If the screen still does not turn off correctly, restart the phone, disable any app that keeps the screen awake, check Developer options, turn off Smart Lock or Extend Unlock features, update HyperOS, and reset app preferences if needed.

Xiaomi Poco C81 Pro screen timeout diagnostic table

Symptom	Likely cause	What to check first
Screen stays on too long	Sleep setting set too high or app keeping display awake	Settings > Always-on display & Lock screen > Sleep
Screen turns off too fast	Short timeout duration or battery saver behavior	Sleep setting and Battery Saver
Screen timeout works only sometimes	App override, video app, reading app, or game mode	Recent apps and app permissions
Screen stays awake while charging	Developer option called Stay awake	Developer options
Screen dims but does not lock	Lock screen delay or screen saver setting	Lock screen and security settings
Screen timeout changed after update	HyperOS setting reset or software bug	Restart and update
Screen stays on in certain apps	App has its own keep-screen-on feature	App settings
Phone does not lock after timeout	Extend Unlock, Bluetooth unlock, or trusted device	Security settings

Why is my Xiaomi Poco C81 Pro screen timeout not working?

Your Xiaomi Poco C81 Pro screen timeout may not work because the sleep duration is set incorrectly, an app is keeping the display active, Battery Saver is changing screen behavior, Developer options are enabled, or HyperOS needs an update.

The screen timeout feature controls how long your display stays on after you stop touching the screen. On Xiaomi and Poco phones, this is usually found under Always-on display & Lock screen or by searching for Sleep inside Settings.

Here are the fixes to try.

1. Check the Sleep screen timeout setting

Start here. If the timeout value is set too long, the screen may look like it is not turning off at all.

1. Open Settings.
2. Tap Always-on display & Lock screen.
3. Tap Sleep.
4. Choose a shorter time, such as 30 seconds or 1 minute.
5. Lock the phone, unlock it, then leave it untouched.
6. Check whether the screen turns off at the selected time.

If you do not see the same menu path, open Settings and use the search bar. Search for Sleep or screen timeout.

Do not choose Never unless you intentionally want the display to stay on.

2. Restart your Poco C81 Pro

A restart can fix temporary display, lock screen, and background app glitches.

1. Press and hold the Power button.
2. Tap Restart.
3. Wait for the phone to turn back on.
4. Leave the phone unused for a minute.
5. Check whether the screen timeout works again.

This will not delete your files, photos, apps, or settings.

Try this before changing deeper system options.

3. Check if an app is keeping the screen awake

Some apps can keep the screen active while you are reading, watching, navigating, recording, gaming, or using a timer.

This often happens with:

• YouTube or video apps
• Camera apps
• Navigation apps
• Reading apps
• Fitness apps
• Timer or clock apps
• Games
• File transfer apps
• Apps with floating windows

Close all recent apps first.

1. Swipe up from the bottom and hold, or tap the Recent apps button.
2. Tap Clear all.
3. Leave the phone untouched.
4. Check whether the screen turns off normally.

If the problem happens only inside one app, open that app’s settings and look for options like Keep screen on, Prevent sleep, Display always on, or Reading mode.

4. Turn off Stay awake in Developer options

The Stay awake setting can keep your Poco C81 Pro screen on while charging. This is useful for testing, but bad for normal use.

1. Open Settings.
2. Go to Additional settings.
3. Tap Developer options.
4. Find Stay awake.
5. Turn it off.

If you do not see Developer options, that is fine. It probably means the setting is not enabled on your phone.

After turning it off, plug in your charger and check whether the screen now times out properly.

5. Check Battery Saver and Ultra Battery Saver

Battery modes can change how the screen, background apps, and lock behavior work.

1. Open Settings.
2. Tap Battery.
3. Turn off Battery Saver temporarily.
4. Turn off Ultra Battery Saver if it is enabled.
5. Test the screen timeout again.

If the timeout works after disabling Battery Saver, the issue may be tied to power management. You can still use Battery Saver later, but check whether it is forcing your screen to dim or lock faster than expected.

Also check whether you created any battery schedule that turns Battery Saver on automatically.

6. Turn off Screen saver

Screen saver can make it look like your phone is ignoring screen timeout, especially when charging or docked.

1. Open Settings.
2. Search for Screen saver.
3. Open the Screen saver setting.
4. Turn it off.
5. Test the display timeout again.

This setting may appear in different places depending on your HyperOS version. The fastest method is to search for it in Settings.

If Screen saver was active, the display might stay awake or show visuals instead of turning off normally.

7. Check lock screen delay and unlock features

Sometimes the screen turns off, but the phone does not lock the way you expect. That can make it feel like screen timeout is broken.

Check lock-related settings:

1. Open Settings.
2. Go to Lock screen or Password & security.
3. Look for lock timing options.
4. Set the phone to lock soon after sleep.
5. Disable trusted unlock features temporarily.

Also check if features like Extend Unlock, Bluetooth unlock, face unlock behavior, or trusted devices are keeping your phone unlocked in certain places.

This does not always stop the screen from turning off, but it can stop the phone from locking after the display sleeps.

8. Update HyperOS and system apps

If the problem started after a system update, app update, or setup transfer, install the latest fixes.

To update your phone:

1. Open Settings.
2. Tap About phone.
3. Tap the HyperOS version card.
4. Tap Check for updates.
5. Install any available update.

Then update system apps:

1. Open Settings.
2. Tap System apps updater if available.
3. Install pending updates.

Also update apps from the Google Play Store.

After updating, restart the phone and test the screen timeout again.

9. Reset app preferences

If an app changed permissions or default behavior, resetting app preferences can help. This does not delete your personal files, but it can reset disabled apps, notification restrictions, background limits, and default app choices.

1. Open Settings.
2. Tap Apps.
3. Tap Manage apps.
4. Tap the three-dot menu.
5. Tap Reset app preferences.
6. Confirm the reset.
7. Restart your phone.

After this, test the screen timeout again before changing more settings.

Use this fix if the issue started after installing a new app, launcher, screen filter, reading app, battery app, or automation app.

10. Reset settings if nothing else works

Use this only after trying the easier fixes. A settings reset can clear system configuration problems without doing a full factory reset.

1. Open Settings.
2. Tap Additional settings.
3. Tap Backup & reset or Reset options.
4. Choose the option to reset settings.
5. Avoid erasing all data unless you have a backup and are ready to fully reset the phone.

The wording may vary by region and HyperOS version.

After resetting settings, set your screen timeout again:

Settings > Always-on display & Lock screen > Sleep

Choose 30 seconds, 1 minute, or another duration you prefer.

What if the screen timeout still does not work?

If your Poco C81 Pro still ignores screen timeout after all 10 fixes, the issue may be caused by a software bug, a damaged proximity/display sensor, a third-party app that keeps returning, or a deeper HyperOS problem.

Try testing the phone in Safe mode if available. If screen timeout works in Safe mode, a third-party app is probably causing the issue.

You should contact Xiaomi or Poco support if:

• The screen never turns off
• The phone gets hot while idle
• Battery drains quickly because the screen stays on
• The issue started after a drop or liquid exposure
• The lock button also behaves strangely
• The problem continues after updates and settings reset

Best screen timeout setting for Poco C81 Pro

For most users, 30 seconds or 1 minute is the best screen timeout setting. It saves battery without turning the display off too aggressively.

Use 2 minutes if you often read recipes, messages, PDFs, or instructions on your phone.

Avoid Never for daily use because it can drain battery and increase the risk of screen wear, accidental taps, and privacy issues.

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