Xiaomi’s ultra-saving mode: how to turn on and configure for maximum autonomy

The ultra-saving mode on Xiaomi smartphones is a lifeline for those cases when the battery is running out and the sockets are not nearby, and this mode not only limits the background processes, but radically changes the logic of the device, turning off everything superfluous and leaving only basic functions. Depending on the model (Redmi Note 12, POCO X5, Xiaomi 13T etc.) and versions MIUI, The interface may be slightly different, but the principle remains unchanged: maximum autonomy due to minimal functionality.

Many users mistakenly confuse ultra-savings with conventional energy saving. These are actually two different tools: the first reduces consumption by energy saving. 20-30%, And the second one is 3-5 Blocking almost all applications except calls and SMS. In this article, we will discuss how to activate the mode correctly, what settings are optimal for different scenarios, and why it may sometimes not work.

What is ultra-savings on Xiaomi and how does it work?

Ultra Battery Saver is an emergency function in the MIUI, It's a phone that temporarily turns your smartphone into a bell ringer with minimal features:

• 📱 All applications except those selected manually (only "Phone" and "Messages" are defaults")
• 🌐 Mobile Internet and Wi-Fi (you can turn on manually, but they will shut down after 5 minutes of inactivity)
• 🔄 Background synchronization (mail, messengers, cloud services)
• 🎮 Graphics and animation (screens turn black and white, refresh rate drops to 30 Hz)
• 🔋 Charging other devices (reverse wireless charging is turned off)

According to Xiaomi, in this mode, the smartphone can work before 2-3 day-time 5-10%. For example, Redmi Note 11 battery-powered 5000 The ultra-mode will be around 40 chronologically 1-2 hour-a-day (calls) + SMS). However, there are some nuances: on some models (for example, POCO F4) The mode can automatically turn off when connected to a charge or reboot.

How does it work technically? MIUI activation of ultra-economy:

1. Limits the CPU clock speed to 1-1.5 GHz (even on flagships like Xiaomi) 13 Ultra).
2. Shuts down all cores. CPU, except 1-2 most energy efficient.
3. Forced to switch the screen to 60 Hz (or 30 Hz on) AMOLED-display).
4. Blocking access to GPS, NFC and other radio modules.

Step-by-step: how to turn on ultra-savings

The activation algorithm depends on the version MIUI. Below is a universal method that works on most devices (from Redmi). 9A Xiaomi 14):

Method 1: Through the notification panel

1. Swipe your finger down from the top of the screen to open the notification bar.
2. Find the Charge Saving icon (battery icon with leaf).
3. Press and hold it. 1-2 Seconds – the menu of advanced settings will open.
4. Select Ultra-Savings (or Extreme Battery Saver on global firmware).
5. Confirm activation by clicking Enable.

Method 2: Through battery settings

1. Open Settings → Battery and Performance.
2. Slip to Battery Mode (or Battery Mode).
3. Choose Ultra-Savings.
4. Configure the list of allowed applications (by default only "Phone" and "Messages").
5. Press Apply.

Method 3: Voice assistant (for the purpose of MIUI 13+)

If you have Google Assistant or Xiao installed AI, You can turn on the voice mode:

Okay, Google, turn on ultra-battery savings on Xiaomi

Or on Chinese firmware:

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Attention! On some models, for example, POCO M4 Pro) after activation of ultra-savings, access to Settings may disappear. To return them, restart the device or turn off the mode through the notification panel.

What applications can be left in ultra-mode

By default, only standard Phone and Messages work in ultra-saving mode, but you can manually add up to 5 additional apps. Here's what you should leave for different scenarios:

How to add the app to the list of allowed:

1. Include ultra-savings in any of the ways above.
2. In the window that appears, tap on Set up applications.
3. Select from the list the programs you want (for example, Viber or Yandex Navi).
4. Save the changes.

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Attention! Don't add apps that are actively using the Internet in the background (like TikTok or Instagram), they will consume charge even in ultra mode, negating its effectiveness, the best choice is offline maps, messengers with disabled sync or music players.

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If you need to access your browser in ultra mode, add to Google Chrome or MIUI Browser, but pre-save the necessary pages in bookmarks – the Internet will work only when you manually connect to Wi-Fi.

Frequent problems and their solutions

Despite the simplicity of the mechanism, users often face difficulties in dealing with ultra-economy, and here are the most common ones and ways to eliminate them:

Problem 1: The mode is not turned on

• 🔌 Battery charge higher 15% — on some models (Redmi) 10, POCO X3) Ultra-savings are only available when charged below 15%. Solution: discharge the device to 10-12% or use the method of ADB (see below).
• 📱 The old firmware is in MIUI 11 and below mode may not be available. Solution: upgrade to MIUI 12+ through settings → The phone. → Updating the system.
• 🔧 Disabled in the developer settings – check if the option to Disable battery saving is activated in the developer menu.

Problem 2: The mode spontaneously shuts down

This may occur for the following reasons:

• 🔋 Connect to charger – the smartphone automatically leaves ultra-mode when charging.Solution: turn off charging or use Charging Only mode (if available).
• 🔄 Reboot the device - after the reboot, the mode is reset. Solution: turn it on again.
• 📶 Activation of mobile Internet - if the settings are limited by time (for example, 5 minutes), the Internet will turn off, and the mode can be deactivated. Solution: set Without limitation in the network settings.

Problem 3: Calls are not working or SMS

If after the inclusion of ultra-economy, outgoing calls are lost:

1. Check that the phone app is added to the allowed ones.
2. Make sure that SIM-The card is active (switch flight mode and back).
3. If the problem persists, restart the device in ultra mode (hold the power button and select Reboot).

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If the ultra-savings don’t turn on on a properly running device, try resetting the battery settings: Settings → Battery → ⚙️ → Resetting the battery settings, which will bring back the standard power consumption parameters.

The Hidden Opportunities of Ultra-Economies: ADB and engineering menu

For advanced users, there are ways to fine-tune ultra-mode through ADB (Android Debug Bridge, or engineering menus:

• 🔧 Activate mode at any charge level.
• 📊 Change the list of allowed applications without a limit of 5 pieces.
• ⚡ Disable forced reduction of processor frequency.

How to Include Ultra-Economies Through ADB:

1. Activate Debugging on USB at the Settings → The phone. → Version. MIUI (Tap 7 times on the build number, then return to the additional → For developers).
2. Connect your smartphone to your PC and execute the command: adb shell am start -a android.settings.BATTERY_SAVER_SETTINGS
3. In the menu that opens, select Ultra-Savings and adjust the settings.

Engineering menu (only for experienced users!)

You can change the energy saving settings through the engineering menu (#4636###), but it's risky - the wrong settings can lead to overheating or rapid discharge.

am broadcast -a com.miui.powerkeeper.CMD -e cmd"set_mode 3"

It is forced to activate ultra-mode, but can conflict with other processes.

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Change the parameters through the engineering menu or ADB This can cause the device to be unstable and cause the warranty to be lost. Use these methods only if you understand the consequences. → System system → Backup.

How to get out of ultra-economy and get back to normal

To deactivate ultra-savings, do one of the following:

• 🔋 Connect the device to charging – the mode will turn off automatically on most models.
• 📱 Swipe down the notification bar and tap on the notification Ultra-savings active, then select Turn off.
• ⚙️ Go to Settings. → Battery → Battery mode and select Balanced or Performance.
• 🔄 Reboot the device - after the reboot, the mode will reset (but it will take longer).

What to do if after leaving the regime:

• 📵 Notifications are not working: check the sync settings in Settings → Notifications.
• 🌐 No Internet: Turn on mobile data or Wi-Fi manually.
• 🔊 Lost vibration: go to Settings → Sound and vibration → Vibration on touch.

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If after ultra-savings the smartphone began to slow down, clear the cache through Settings → Warehouse → Clear the cache. This will delete temporary files that may have been damaged by the forced restriction of the processor.

Comparison of ultra-savings on different Xiaomi models

The effectiveness of the mode depends on the device model and version MIUI. In the table below – a comparison of autonomy in ultra-mode for popular smartphones (testing was conducted with a charge residue of 10% with an activity of 1 hour / day):

On flagships (Xiaomi 13 Ultra, Mix Fold 3), ultra-savings are less efficient because of the powerful hardware that is difficult to limit. A2, POCO C50) The mode can extend the autonomy up to 3 days thanks to energy-efficient processors.

FAQ: Answers to Frequent Questions