Crescent icon on Xiaomi Redmi: decryption, causes of appearance and ways to eliminate

If you notice on the top notification panel of your smartphone Xiaomi Redmi or POCO This is a mysterious crescent icon, don't panic, it's not a system bug, it's not a virus, it's a symbol that signals the activation of one of the service modes that can affect the operation of the device. But which one is it? Silent mode, sleep mode, energy saving or whatever?

Many users confuse this icon with the Night Mode (Moon) icon or the Do Not Disturb mode, but it actually has several interpretations depending on the version. MIUI In this article, we'll look at all the possible values of the crescent, explain how it affects the operation of the phone, and show 3 proven ways to turn it off, from basic settings to hidden features for advanced users.

Importantly, if the crescent appeared after a firmware update or third-party software installation, its behavior may differ from the standard one, in which case our diagnostic recommendations for the problem will be useful.

1.What does the crescent icon on Xiaomi Redmi mean: all possible values

V MIUI (The crescent icon can denote three different modes, each of which affects the phone in its own way:

• 🌙 Don't disturb mode" (DND) — Blocks notifications and calls, but allows alarms and priority contacts to break through.
• 🔋 Energy saving mode – limits the background activity of applications, reduces screen brightness and performance to save charge.
• 💤 Sleep mode (in some versions) MIUI) — Automatically activated at night, reducing brightness and disabling unnecessary functions.

How do you know which mode is on your Redmi? The easiest way is to pull the notification bar down and look at the text underneath the icon. If you don't have a signature, check the settings in our guide below.

Critical detail: on models Redmi Note 10/11 and POCO X3 The crescent can mean activating the hidden mode "Ultra Battery Saver", which blocks all background processes except calls and calls. SMS. This mode is activated automatically when the battery is lower. 5% and requires manual shutdown.

If you are not sure which mode is activated, go to Settings. → Notifications and status bar → Status icons – there will be a detailed description for each symbol.

2. How to distinguish "Do Not Disturb" from energy saving

This is the most common question Xiaomi Redmi users have, and both modes use a crescent icon, but behave differently.

🔹 Don't disturb mode" (DND):

• 📵 Calls and SMS Blocked (except for selected contacts).
• 🔔 Notifications from apps do not appear on the screen.
• 🕒 May work on a schedule (for example, from 22:00 to 8:00).
• 🔕 Vibration and sounds are completely off.

⚡ Energy-saving regime:

• 📞 Calls and SMS pass normally.
• ⚙️ Processor performance is reduced by 30-50%.
• 📱 Background synchronization of applications is turned off.
• 🔋 The battery charge is used more slowly.

🔍 How do you check? Just try calling from another device:

If the call passes, but the phone is slow, it is energy saving.

If a call is dropped or sent to voicemail, it's "Do Not Disturb."

⚠️ Attention: On the Redmi Note 9/10 s MIUI 12+ The energy-saving mode can automatically turn on "Do Not Disturb" when the charge is low. To avoid this, turn off the Settings option. → Battery → Energy conservation → Automatically activate "Do not disturb".

3. Step-by-step instruction: how to remove the crescent icon

How you turn off depends on which mode you're activating. We've put together universal methods for all versions. MIUI (11-14).

📌 Method 1: Through the notification panel (fastest)

1. Pull the notification bar down with two fingers.
2. Find the "Do Not Disturb" or "Energy Saving" label (crescent or battery icon).
3. Slap it on once to turn it off.

📌 Method 2: Through settings (if no label is available)

1. Open Settings → Notifications and Status bar.
2. Select "Do Not Disturb."
3. Turn off the switch at the top of the screen.
4. If the crescent is left, go to Settings → Battery → Energy saving and deactivate the mode.

📌 Method 3: For Ultra Battery Saver (hidden method)

1. Connect the phone to the charger.
2. Open the Settings. → Battery.
3. Stick to the label "Ultra Battery Saver" (could be called "Super Energy Saving").
4. Press "Out of mode."

⚠️ Attention: POCO F3/F4 s MIUI 13+ Disabling Ultra Battery Saver may require you to enter a password from your Mi Account. If you forgot your password, use the instructions from the user account. FAQ.

4.Why the crescent appears on its own: 5 hidden reasons

If you haven’t manually enabled any modes, but the crescent icon appears regularly, the problem may lie in one of these factors:

• ⏰ Automatic schedules - in MIUI You can set up "Do Not Disturb" or energy saving by time (for example, at night). → Notifications → Don't disturb. → Schedule.
• 🔄 Adaptive battery - a function MIUI, which includes low-charging energy saving. → Battery → Adaptive battery.
• 📱 Third-party apps – some programs (such as Greenify or Battery Doctor) can force saving modes to be activated.
• 🔄 Update of the firmware - after the update MIUI Some settings are reset, including sleep patterns.
• 🛠️ System failure – if the crescent does not disappear even after turning off all modes, a reset is required (instruction below).

🔧 The solution for most cases:

1. Open the Settings. → Battery → Energy conservation → Settings.
2. Turn off the "Automatic Powering" and "Adaptive Battery" options.
3. Reboot the phone.

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If the crescent appears only at night, check your sleep settings in Settings → Screen. → Sleep mode. Sometimes it's activated with the Reading function or Night Lighting function".

5 What to do if the crescent does not disappear: radical methods

If standard methods didn’t help and the crescent icon remains on the notification bar, try these advanced solutions:

🔹 Resetting notification settings:

1. Go to Settings → Applications → Application Management.
2. Slip on the three points at the top. → "Resetting application settings".
3. Confirm the action and restart the phone.

🔹 Clearing the system's cache:

1. Open the settings → About the phone → Memory.
2. Select “Clear Cache” (not to be confused with data cleanup!).
3. Wait for the process to complete and check the notification panel.

🔹 Related: Retreat of the update MIUI (If the problem has occurred after the update):

1. Go to Settings → About the phone → System update.
2. Slap the icon. ⚙️ → "Remove the latest update".
3. Confirm the action and wait for the reboot.

⚠️ Attention: On Redmi K40/K50 Resetting notification settings can result in the loss of saved exceptions for Do Not Disturb mode (e.g., favorite contacts.

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If none of these methods worked, the cause could be damage to the system files, in which case only flashing through Fastboot (an instruction manual for power users) will help.

6. How to set up regimes with a crescent moon for yourself

Instead of completely turning off the Do Not Disturb modes or energy saving modes, you can flexibly adjust them to your needs.

🔧 Setting up "Do not disturb":

• 📵 Contact exceptions: Allow calls from select people in Settings → Notifications → Don't disturb. → Allow exceptions.
• ⏰ Schedule: Set up automatic turn on overnight or during business hours.
• 🔔 Repeated Calls: Turn on the Re-Call option – if someone calls twice within 3 minutes, the call will pass.

⚡ Setting up energy saving:

• 📱 Application exceptions: C Settings → Battery → Energy conservation → Add messengers and mail to the whitelist.
• 🔋 Limitation level: Choose between Balanced and Hard mode depending on the needs.
• 🕒 Automatic Shutdown: Set a timer to exit mode (for example, after 2 hours).

💡 Hidden chip for the Redmi Note 12:

V MIUI 14, there's a smart energy saving feature that analyzes your habits and only activates the mode when you really need it. → Battery → Energy conservation → Smart energy saving.

7. Frequent User Errors and How to Avoid Them

When you're working with crescent regimes, you're going to make some common mistakes that have unexpected consequences. Here's what you can't do and why:

❌ Ignore the schedule of regimes

If you set up Do Not Disturb Automatic Turn on overnight but forgot about it, you can skip important calls in the morning.Solution: Check the schedule in Settings → Notifications → Don't disturb. → Schedule.

❌ Turn off energy saving at low charge

At the level 5-10% If you deactivate the mode, you can turn off the charger suddenly. 20%, before turning off the savings.

❌ Use third-party "battery optimizers"

Apps like this DU Battery Saver or Clean Master are often in conflict with the MIUI And they turn on modes without your knowledge. Solution: Remove them through Settings. → Annexes.

❌ Reset settings without backup

When you reset notification or system settings, you lose all Do Not Disturb exceptions and personal power saving settings.Solution: Backup through Settings → System and device → Backup.

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If you have a crescent after you turn off all modes, check if you have custom firmware installed on your phone (such as Pixel Experience or LineageOS), which can indicate other features.

FAQ: Answers to Frequent Questions