How to forcely leave only 4G on Xiaomi Poco X3 Pro: all the ways

Why the Poco X3 Pro doesn’t run stable 4G and how to fix it

Owners of Xiaomi Poco X3 Pro often face a situation where the smartphone spontaneously switches to slow 2G/3G networks, despite the presence of 4G coverage in the region. This is due to the energy saving algorithms MIUI, which in order to save battery power sacrifice the speed of the Internet.

Another common cause is that the network settings are incorrect after updating the firmware or resetting to factory settings, and in some cases, the operator is to blame for forcing the devices to be transferred to outdated networks to unload. 4G-But most often, the solution lies on the surface: you just need to manually prioritize networks in Poco settings. X3 Pro.

In this article, we’ll look at all the possible ways to force only 4G to be enabled, from standard MIUI options to hidden engineering menu commands to ADB. It’s important to understand that some methods can affect the autonomy of the device – we’ll also warn you about this in advance.

Method 1: Standard MIUI settings (the safest method)

Let's start with the simplest and most formal way, which doesn't require superuser rights or a PC connection, which is enough to lock a smartphone onto a 4G network in most cases.

Open the Settings app and go to the section SIM-maps and mobile networks. Choose yours. SIM-map (if there are several), then tap on the network type. Here you can see the following options:

• 📶 4G (recommended - priority given LTE, But with a weak signal, the phone can switch to 3G/2G.
• 📶 Only 4G — Forced mode in which the device will not use other standards.
• 📶 3G or 2G — manual restriction (not our case).

Select 4G Only and restart your smartphone. Once turned on, check the network indicator in the status bar – it should display a 4G or LTE icon.

⚠️ Note: In some regions, operators (such as MTS or Beeline) may block access to the network if the device does not support voice calls over VoLTE.

Method 2: Engineering menu (for experienced users)

If standard settings fail, you can try changing the network settings through the Engineering Mode, a method that requires caution, as incorrect actions can disrupt the modem.

To open the engineering menu, enter the following code in the Phone application:

##4636##

Once you enter, the Test menu will open. Go to the Phone Information tab and scroll down to Network Type Installation. Here you will see a drop-down list with options:

• 🔧 LTE only - compulsory 4G (analogue 4G» into MIUI).
• 🔧 LTE/WCDMA Auto – Automatic choice between 4G and 3G.
• 🔧 WCDMA only 3G (not recommended).

Select "LTE only" and press OK. Changes will take effect immediately, but for reliability, restart the device. If the connection then disappears, return the settings to the original state.

Method 3: ADB commands (for advanced)

If previous methods have not worked, you can use ADB-Android Debug Bridge, which requires you to connect your smartphone to your computer and enable debugging mode. USB.

First, activate the Developer Mode:

1. Go to Settings. → The phone.
2. Tap 7 times on the MIUI version.
3. Go back to the basic settings and open the section Additional → For developers.
4. Turn on USB debugging.

Now connect Poco X3 Pro to your PC, install ADB drivers (if necessary) and execute on the command line:

adb shell


settings put global preferred_network_mode 9

The value of 9 corresponds to LTE mode only. Other options:

⚠️ Attention: After use ADB Check the call. Some operators (e.g. Television)2) They can block voice communication in “Only” mode. LTE», If VoLTE is not activated, then return settings with settings put global. preferred_network_mode 7.

Method 4: Change the configuration file (root access)

This method is only suitable for users with an unlocked bootloader and Magisk installed (or other root-rights method), and allows you to manually edit the build.prop system file that is responsible for network settings.

With any root-enabled file manager (such as Root Explorer), open the file along the way:

/system/build.prop

Add the following lines to the end of the file:

ro.telephony.default_network=9


persist.radio.lte_vr_enable=1

Save the changes, restart the device and check the network indicator. This method is guaranteed to fix the smartphone on 4G, but requires caution: improper editing build.prop can lead to bootloop.

💡

Before you edit build.prop, back it up. To do this, copy the file to the SD-In the event of a crash, you can restore the original version.

What to do if 4G never came out

If none of these methods worked, the problem could go deeper, and here's a list of possible causes and solutions.

• 📡 Operator problems: Check the provider's website or support number to see if there is a malfunction in your area. 4G.
• 📱 Modem malfunction: If the smartphone does not catch 4G even SIM-The map may have damaged the radio module, in which case only the service center will help.
• 🔄 Reset Network Settings: Go to Settings → SIM-maps and mobile networks → Reset the network settings, which will bring all the communication parameters back to the factory.
• 📲 Firmware: Some custom firmware (like LineageOS) may have modem bugs. Try going back to stock. MIUI.

Also check if your plan supports 4G. Some budget packages (especially Yota or virtual carriers) limit speeds to 3G. Check this in your personal account or with the operator.

💡

If after all the manipulations, 4G did not work, but on other devices in the same location it is - the problem is most likely hardware.

Impact on autonomy: whether to turn off 2G/3G

Many people worry that forcing 4G to be turned on will increase battery consumption, so let's see if that's true.

In theory, search and switch between networks (2G↔3G↔4G) It actually consumes extra energy, but in practice, the difference in autonomy is fixed. 4G This is only 5-10% depending on the conditions:

• 🔋 In a city with good coverage: Battery consumption may even decrease, as the modem does not have to constantly scan other networks.
• 🏞️ In rural areas: If the signal 4G weak, the smartphone will spend more energy on its retention than when switching to 3G.
• 📶 In roaming: It is better to leave automatic mode here, as foreign operators can use non-standard ranges.

On the Poco X3 Pro with a Snapdragon 860 processor and X24 LTE modem, 4G-only autonomy is reduced by an average of 8-12% compared to the auto-mobility choice of the network, but this is offset by stable Internet speed and the lack of “jumps” between standards.

FAQ: Frequent 4G questions on Poco X3 Pro