Why mobile network is draining the battery on Xiaomi and how to stop it

Why the network “eats” the charge the fastest

You noticed that after the update MIUI Or change the SIM card smartphone Xiaomi began to discharge in a few hours? №1 is a mobile phone module, according to the lab. DXOMARK, Up to 30% of the power consumption of modern smartphones is due to work with the network, and on devices with Qualcomm Snapdragon this figure can reach 40% with a weak signal.

The fact is that the communication module constantly scans the surrounding space for the best cell, switches between 2G/3G/4G/5G, supports background connections for messengers and push notifications. In conditions of poor coverage (for example, in the subway or in the country), the phone spends 2-3 times more energy than with a stable signal, to this is added MIUI bugs, improper APN settings and even viruses masquerading as system processes.

In this article, 10 proven ways to reduce battery consumption from mobile networks without losing functionality, from simple settings to hidden options of the engineering menu. All methods have been tested on Xiaomi, but some of them will be suitable for other brands on Android.

1. Check the actual battery consumption: who is to blame – the network or the applications?

Before you set up anything, make sure that the problem is in the communication module, not in the background application.

1. Open Settings → Battery → Battery Use.
2. Click on the three dots in the top right corner and select Usage Statistics.
3. Look at the chart over the past 24 hours: If the mobile network or Android System is more than 15-20%, the problem is confirmed.

Pay attention to Mobile Signal and Mobile Data, if they consume more than 10% in total, your phone is spending too much energy searching the network, and if the Android System is to blame (25% or higher), the APN settings are likely to be lost or malware is running.

2. Optimize the network type: 4G vs 5G vs 3G only

Many users mistakenly believe that 5G always drains a battery faster than 4G. It really depends on the quality of the signal. For example, if you are on the edge of 5G coverage, the phone will constantly switch between 4G and 5G, which eats up to 35% of the additional charge (data from GSMArena tests on Xiaomi 13 Pro).

How to choose the optimal mode:

• 📶 In a city with a good 5G: leave 5G/4G/3G/2G (Autos: Modern chips (e.g. Snapdragon) 8 Gen 2) effectively manage energy consumption.
• 🏡 At home/work with a stable 4G: and to forcefully establish only 4G customized SIM-map.
• 🚇 In the subway or outside the city: switch to only 3G or even just 2G (If calls are more important than the Internet).

How to change the settings:

1. Go to Settings. → SIM-maps and mobile networks → [yours SIM] → Type of network.
2. If you do not have 3G Only, use the engineering menu (see section 5).

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On Xiaomi, two SIM-Turn off the mobile data on the second card if it is used only for calls, this will reduce battery consumption by 5-8%.

3. Turn off background mobile data activity

By default, MIUI allows apps to use mobile traffic in the background — even when you’re not using them. This applies to instant messengers, social networks, email, and even some games. For example, WhatsApp can use up to 5% of the battery per hour just to synchronize messages.

How to limit background traffic:

• 🔄 For individual applications: Open Settings → Annexes → App management. Select an app (e.g. Facebook) → Mobile data. Turn off Background and Unlimited data.

Global constraint:

1. Go to Settings. → SIM-maps and mobile networks → Transfer of data.
2. Activate Background Data Limitation.

After these changes, apps will only be updated when opened or via Wi-Fi, which may delay notifications slightly (by 1-2 minutes), but save up to 15-20% of the charge per day.

Disable background data for social networks|Check your email synchronization settings|Limit Auto-Update Apps in the Play Market|Disable mobile data for unnecessary applications-->

4.Tune in APN: Why Wrong Settings Eat Battery

Incorrect APN (Access Point Name) settings cause the phone to constantly reconnect to the network, which increases power consumption by 10-25%, especially after a carrier change or a MIUI update, when old APN settings are reset.

How to check and fix the APN:

1. Open the Settings. → SIM-maps and mobile networks → [yours SIM] → Access points (APN).
2. If you have multiple profiles, delete all but one (usually named after the operator, for example, Internet.beeline.com).
3. Click on the remaining APN and check the settings. They should match your operator's official settings (see the table below).

If the Internet is not working after the changes, restart the phone. If the problem persists, request automatic settings from the operator (usually sent by SMS).

5. Hidden settings of the engineering menu: how to forcefully reduce the power of the module

Xiaomi has a hidden engineering menu where you can manually adjust the mobile network settings, including signal power and power saving mode. Careful: the wrong changes can lead to network loss!

How to open the engineering menu:

1. Open the phone app and enter the combination: ##4636##
2. Select Phone Information (or Phone Information).
3. Scroll down to the Set preferred network type block, where you can force LTE only or WCDMA only (3G) to be installed.

For advanced users:

• 📡 In the Signal Strength section, you can see the current signal strength. -100 dBm, the phone spends a lot of energy on its amplification.
• 🔋 In some firmware there is an Enable item DSDS power saving for two people SIM-cards) - its inclusion reduces battery consumption by 5-7%.

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Changes to the engineering menu are not saved after the reboot. To fix the settings, use the Network Signal Guru app (root rights required).

6. Check your phone for viruses and malicious apps

Some viruses and spyware disguise themselves as system processes and use the mobile network to transmit data, leading to abnormal battery consumption. For example, the Android.Triada Trojan (discovered in 2023 in some Xiaomi firmware) creates hidden connections to display ads.

How to Detect and Remove Threats:

• 🛡️ Scanner. MIUI Security: Open Security → Scanner. Run a deep scan (may take 10-15 minutes) Delete any threats found.

ADB

(for experienced):

1. Connect your phone to your PC and execute the command: adb shell dumpsys netstats
2. Check which processes are using mobile traffic in the background.

If after cleaning the battery consumption is not normalized, check the list of installed applications for suspicious (for example, with names like System Update, Android Service or Cyrillic characters).

⚠️ Warning: Some of the Play Market's "battery optimizers" are themselves the source of the problems. MIUI Proven antiviruses (Kaspersky, Bitdefender).

7. Update firmware and reset network settings

Bugs in MIUI — One of the main reasons for unnecessary battery consumption, for example, in versions of the MIUI 13-14, a bug was detected that prevented the communication module from going to sleep when the screen was locked.

How to update firmware:

1. Go to Settings → About the phone → System update.
2. Click Check Updates and install the latest version.
3. If the update doesn’t come, check manually at miui.com (select your model).

If the problem persists after the update, reset the network settings:

1. Open Settings → System → Reset.
2. Select Network Settings Reset (does not reset data, only Wi-Fi, mobile network and Bluetooth settings).
3. Reboot the phone.

⚠️ Note: After reset, you will have to re-enter Wi-Fi passwords and configure APN. Save them in advance in a notebook.

8.Alternative methods: from disabling VoLTE to replacing the SIM card

If none of the above helps, try these methods:

• 🛠️ Check the antenna: If the phone fell or got wet, the antenna module could have been damaged).

If the problem persists even after all the manipulations, a hardware defect (such as a faulty Qualcomm modem or Mediatek) may be to blame.

FAQ: Frequent questions about battery consumption from mobile network