Xiaomi Ultra Savings: What It Is, How It Works, and Should It Be Included

Owners of Xiaomi, Redmi and POCO smartphones often face a situation where battery power comes to an end at the most inopportune moment, in which the screen offers to go to extreme energy saving mode, which in the shell of MIUI or HyperOS is often called “ultra saving”, this feature radically changes the interface of the device, turning the modern smartphone into a kind of button phone of the early 2000s, leaving available only the most necessary functions.

Many users are afraid to turn on this mode, thinking that it can damage the device or lead to data loss. In fact, it is a standard tool of the Android operating system with a proprietary add-on of the manufacturer, designed to extend battery life to several days in standby mode. Understanding the principles of its operation will help you effectively manage the resources of the gadget in critical situations.

In this article, we will discuss in detail what exactly happens to the system when this mode is activated, what processes freeze and why the screen turns black and white, you will learn how to properly configure this mode so that it does not interfere with important notifications, and whether it is worth using it constantly to “keep the battery healthy”.

The principle of operation of the regime of extreme energy saving

The essence of the function is to aggressively limit background processes and visual effects. When you activate ultra mode, the operating system forcibly closes all applications except those on the whitelist. Usually calls, messages, alarms and sometimes a browser or calendar, which allows the processor to go to a state of minimal power consumption.

The second important aspect is the interface change. MIUI Turns the subject to completely black (on the AMOLED-It means turning off the pixels completely on screens, and it removes all the animations. AMOLED savings may be 30-40% It's just by turning off the black backlight, and visually, it looks like a device with a monochrome display, which also reduces the load on the GPU.

The third component is network activity restriction: the system stops constantly polling servers to update the news feed, email or social networks, data synchronization occurs only when the application is opened or completely blocked, this prevents battery drain due to constant network search or data packet transfer in the background.

⚠️ Note: In this mode, notifications from messengers (WhatsApp, Telegram) may not arrive unless you add them to the list of allowed applications. Do not rely on your phone in ultra-saving mode to wait for an important call via Internet Protocols (VoIP).

What is blocked and what remains available

When you go into extreme economy mode, you face a number of limitations that you need to know about in advance, the system leaves the functional minimum necessary for survival and communication, all entertainment and resource-intensive functions are forced to be turned off, and you can't get around this with standard means.

Multimedia is the first to suffer. Video players, heavy games, graphics navigation maps, all become inaccessible or extremely unstable1 Even if you can run an application, the system will constantly try to close it to keep it charged. GPS-The module can also be disabled or operate with long delays.

However, the basic functions remain fully functional: you can make emergency calls, send SMS, use an alarm clock and a calculator. In some versions of the firmware, a simple web browser with a text mode is available that allows you to open a map or read important information without downloading heavy graphics.

• 📞 Available: Phone book, calls, SMS, alarm clock, calculator, flashlight, settings (basic).
• 🚫 Blocked: Games, video players, most third-party applications, background synchronization, interface animations.
• ⚠️ Limited: Screen brightness, vibration, data transfer (can be disabled by default).

How to Include and Set Up Ultra Savings on Xiaomi

Activation is usually automatic when the charge drops below 10% or 5%, but you can manually turn it on at any time, which is useful to do in advance if you know that during the day you will not be able to charge the device, and you will need a phone for important calls.

To manually enable, you need to open the standard Security app (green icon with a shield), which is pre-installed on all Xiaomi smartphones. You need to find the Battery item on the bottom menu or in the tool list, and that's where the power saving mode switch is located.

In the menu that opens, you'll see a mode-select slider, and the standard mode of saving just limits background activity, and the ultra-saving mode (sometimes called Survival Mode or Extreme Mode) changes the interface, and once confirmed, the phone goes out for a few seconds and turns on in a new look.

You can set up the list of allowed applications in the same battery menu, and you can add up to 6-7 apps that will be available in the black interface, which can be maps, instant messengers or banking applications if the situation requires it.

The real impact on battery life

Many users wonder how effective this mode is in reality. Tests show that in ultra-saving mode, a smartphone can last from 2 to 5 days in standby mode with rare calls. For comparison, in normal mode with the Internet and notifications on, the phone will run out in 1-2 days.

The efficiency depends on the battery capacity and the state of the battery itself. On older devices with degraded batteries, the increase in battery life will be less noticeable, but still significant. The main energy consumption is used to maintain the cellular network signal, so in areas of uncertain reception, the battery will sit down faster even in this mode.

Below is a table showing the approximate running time of Xiaomi Redmi Note smartphone with a 5000 mAh battery in various use cases:

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If you turned on ultra mode at night, be sure to check if the alarm went off. In some older versions of MIUI, the alarm might not work when fully discharged, although in modern firmware this is fixed.

Myths about the dangers of the regime for the battery and system

There is a persistent misconception that running in power-saving mode harms the battery or kills the operating system. It is not. Lithium polymer batteries used in Xiaomi do not have "memory" and do not suffer from the fact that the phone works at low CPU voltage.

By contrast, working at low temperatures and reduced loads can even extend the physical life of components. The processor does not warm up, which reduces the thermal load on the board and adhesives. However, there is a nuance associated with deep discharge.

If you turn on ultra mode when you have 5% left and put the phone in the closet for a week, it will still run out of charge. Prolonged storage of the Li-Ion battery in a deep discharge state (below 2.5-3 volts per cell) leads to irreversible degradation of the cell chemistry. So do not leave the device off or in ultra-saving mode with 0% charge for more than 1-2 months.

⚠️ Note: Do not use ultra-saving mode as your primary.You will miss important notifications, and some system services (e.g., device search or backup) may not work properly.

How to get out of ultra-automatic mode

There are two ways to get out of extreme energy saving: the first and easiest way is to wait until the battery goes above 20-30% (if you put the phone on charge), and the system automatically prompts you to return to normal use.

The second is manual. The lock screen or the black main screen usually has an exit button or a battery icon, and when you click on it, the system will request confirmation, and then the interface will return to its normal appearance, and all the background processes will start again.

If the interface is frozen and the buttons are not responding, you can reboot the device. Press the power button for 10-15 seconds. Once turned on, the phone usually returns to standard mode, as the low battery condition is no longer relevant or has been reset.

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Out of mode occurs automatically when charging above 30% or manually through a button on the lock screen. Forced reboot also resets the restrictions.

Frequently Asked Questions (FAQ)