Xiaomi Redmi 4X is one of the most successful models of the budget segment of its time, but even the legendary autonomy can eventually cease to please the owner. The situation when a device that previously lasts two days begins to require recharging by the evening, familiar to many users. This does not always mean the physical death of the battery, often the problem lies in software failures or incorrect settings of the MIUI system.
First, you need to do a primary diagnostic to understand the scale of the problem: If your phone is heating up in your pocket without active work or shows sharp jumps in percentages of charge (for example, from 40% to 10% per minute), these are clear signs of malfunctioning of the power controller or degradation of the chemical element. In more simple cases, competent software optimization is enough to return the device to its former aspiration.
In this article, we will discuss in detail all possible causes of rapid discharge for the Redmi 4X model, taking into account the features of its Snapdragon 435 processor and MIUI shell. We will not use abstract tips, but focus on specific actions that will help to extend the life of your gadget.
⚠️ Warning: If the smartphone case is swollen or the battery is physically deformed, immediately stop using the device and replace the battery.
Analysis of energy consumption statistics
The first step in solving any autonomy problem is to collect precise information about what exactly is “eating” the charge. Android provides built-in monitoring tools, but in the Xiaomi MIUI shell they have their own display features. You need to go to the Settings → Battery and performance menu to see a detailed graph.
If you look at the statistics or consumption section, you'll see a list of apps that are sorted by percentage of energy used in the last 24 hours or 7 days, if you see an app that you haven't used (like Google Play Services or Mi Cloud) consumes more than 15-20% of the charge, it's not working properly. Background activity is the main enemy of autonomy in modern smartphones.
Sometimes the leaderboard is a system process called Media Service or Screen, which may indicate a file in the gallery that is frozen, or too bright or too navigational, and it is important to distinguish between normal high consumption (games, videos) and abnormal consumption (simple in a high-flow pocket).
Optimization of screen and interface
The screen is the most energy-intensive component of any smartphone, and the Redmi 4X is no exception. Although the 5-inch diagonal doesn't seem huge, the brightness of the backlight can consume up to 40% of all battery power. Automatic brightness control often works incorrectly, exposing values above those needed for comfortable use.
It is recommended to manually set the backlight level to 30-40% when using indoors and raise it only in bright sunlight. Also, pay attention to the time before the screen is turned off. The standard 30 seconds or a minute is too long for a smartphone that often lies unlocked. The optimal value is 15 seconds.
And visuals, too. Transition animations, live wallpapers, and widgets that keep up-to-date data (weather, news) put a constant strain on the CPU and graphics accelerator. Turning off live graphics is an easy way to reduce the load on the GPU.
- 🌑 Use a dark theme if you have a AMOLED-screen (although in Redmi) 4X IPS, It still reduces the brightness of the pixels).
- 📉 Reduce the refresh rate of widgets or remove those that aren’t used daily.
- 🔇 Turn off keyboard vibration and system events, as the vibrating response motor consumes a significant amount of energy.
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Use Read Mode only when it is really necessary, as it often blocks automatic brightness, making the screen shine brighter than you need.
Management of Background Processes and Applications
MIUI is known for its aggressive memory management policies, but some applications still manage to bypass restrictions, especially messengers and social networks that tend to keep a constant connection to receive instant notifications, which leads to the fact that the processor can not go into deep sleep mode.
To combat this, the battery settings have a special section called Activity Control, where you can manually prevent applications from running in the background, but be careful: if you block the background work of the messenger, messages can only come after the application is opened, you need to find a balance between autonomy and functionality.
Special attention should be paid to geolocation. Many applications request access to GPS and use it constantly, even when you are not using it. The GPS module is very power-intensive. Check the access rights in the Settings menu → Applications → Permissions → Geodata and set the "Only when used" mode for all unverified programs.
☑️ Optimization of background processes
⚠️ Warning: Don’t install the dubious Play Market accelerators and cleaners, which are background processes that drain the battery faster than they save it.
Problems with network connection and communication modules
One hidden but very common reason for the fast discharge on the Xiaomi Redmi 4X is a poor cellular signal: When the phone is in the area of insecure reception, its radio module starts operating at maximum power, constantly trying to find a base station or switch between 2G/3G/4G standards. This causes a strong heating of the case and a sharp drop in charge.
If you live or work in a place where the signal is constantly jumping (for example, 1-2 divisions), it makes sense to temporarily switch the network type to forced mode, you can do this through the engineering menu or standard settings. Going to 3G Only or 2G mode (if you do not need fast Internet) will significantly reduce the power consumption of the modem.
It's also worth checking Wi-Fi and Bluetooth settings. Wi-Fi Network Search and Bluetooth Scan can work even when the modules are off if geolocation is enabled. Constantly searching for available points in the background is an extra load on the processor.
| Mode of work | Impact on the battery | Recommendation |
|---|---|---|
| 4G/LTE (good signal) | Average. | Use by default |
| 4G/LTE (bad signal) | Critical | Switch to 3G/2G |
| Network search (roaming) | High. | Turn off auto-choice |
| Flight mode | Minimum | Use at night |
How to log into the engineering menu to change the type of network
Battery calibration and statistics reset
Over time, the software controller of the battery can "remember" the wrong values of the capacity, which leads to incorrect display of percentages. The phone can show 20% and suddenly turn off, or charge up to 100% in 30 minutes, although the battery is physically full.
Calibration on the Redmi 4X is simple, but it takes time. You need to completely discharge the phone before you turn it off. Then, without turning it on, put it on charge and wait until the indicator shows 100%. After that, you need to hold the device on charge for another 1-2 hours, then you need to force the reboot (press the power button for 10 seconds).
There is also a method of resetting battery statistics through an engineering menu, however it requires caution ##6485## Opens the test menu where you can see the real capacity (MB_06) residual (MB_00). If the difference between the actual and the design capacity is large, a software reset may not help and a replacement of the item will be required.
- 🔋 Discharge the smartphone to 0% (spontaneous shutdown).
- 🔌 Charge to 100% in the off state.
- 🔄 Make a full Hard Reset if the problem persists after calibration.
- 📉 Use the Battery Monitor app to track real capacity in mAh.
Hardware malfunctions and wear
If software methods haven't helped, it's probably physical wear and tear. Lithium-ion batteries have a limited life of charge-discharge cycles (usually 500-800 cycles). For the Redmi 4X, which came out a few years ago, natural wear and tear is the most likely cause.
Besides the battery itself, the problem may lie in the power controller on the motherboard, so power surges, the use of non-original chargers, or the fall of the phone could damage the chips responsible for power distribution, in which case the phone can quickly discharge even when it is turned off.
A critical sign of hardware failure is heating the lower part of the case (in the area of the charging connector) even when the screen is turned off and no applications running, this indicates a current leak in the power supply chain.
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If after resetting to factory settings and calibration, the battery still keeps the charge less than 6 hours in standby mode, it is necessary to replace the battery with a new original or a high-quality copy.