Disabling Unused Frequency on Xiaomi: A Complete Guide to Improve Communication and Saving Power

Have you ever noticed that your Xiaomi or Redmi is running too fast even when you're not actively using mobile Internet? Or that the network signal is unstable, although the operator promises better coverage? The reason may lie in automatic scanning of unused frequencies - a feature that is turned on by default on most smartphones. Manufacturers add support for maximum ranges for "universality", but in practice this often leads to excessive energy consumption and even deterioration of communication.

In this article, we will discuss how to disable unused frequencies. LTE/5G Xiaomi without root rights, what ranges your operator really needs in Russia, Ukraine, Kazakhstan or other CIS countries, and what to do if the signal is lost after the changes (POCO F5, Redmi Note 12, Xiaomi 13T support advanced network settings, and where you need to use an engineering menu or ADB-team.

Important: you do all the frequency manipulation at your own risk. Incorrect settings can lead to a complete loss of mobile communication before resetting to factory settings. If you are not sure about your actions, you should consult a specialist or leave the default settings.

Why you should turn off the extra frequencies on Xiaomi

Modern Xiaomi smartphones support up to 40+ LTE-ranges 10+ 5G-The real thing is, your operator is using everything. 2-4 This is what happens when the phone scans all the frequencies available:

• 🔋 Increased battery consumption – the communication module spends energy searching for and analyzing unnecessary signals, even when the screen is off.
• 📶 Unstable signal – the phone may “cling” to weak ranges instead of priority, leading to communication breakdowns.
• ⚡ Overheating of the processor – the modem constantly loads the chipset (especially on budget models like Redmi). 10A).
• 🚀 Slowing down the Internet – when switching between ranges, the speed may fall by 30-50%.

According to GSMArena tests, turning off unused frequencies on the Xiaomi 12 Pro saved up to 15% of charge in 8 hours of standby time, and users of the POCO X3 Pro noted an improvement in Internet speed by 20-30% after manually adjusting the ranges.

But there's a downside: if you turn off your carrier's main operating frequencies, your phone will lose communication, so you need to know exactly what ranges your provider is using before you change.

What frequencies are used by operators in Russia, Ukraine and CIS

The following is an up-to-date range table for the main operators, validated as of 2026 and may vary by region, and for accuracy, we recommend checking the information on your provider’s website or through an application (for example, My MTS or My Kyivstar).

For other CIS countries (Kazakhstan, Belarus, Uzbekistan, etc.) current ranges:

• 🇰🇿 Kazakhstan (Tele2, Beeline, Kcell): B3, B7, B20, B28 (700 MHz)
• 🇧🇾 Belarus (MTS, A1, life:)): B3, B7, B20, B38
• 🇺🇿 Uzbekistan (UzMobile, Beeline, Ucell): B1 (2100 MHz), B3, B7

💡

To find out what range your phone is using right now, install the NetMonster or CellMapper app from Google Play. They will show the current frequency (Band) and signal strength in dBm.

If your operator is not in the table, check the official website or contact support. For example, in Moldova (Moldcell, Orange) the B1 and B8 (900 MHz) bands, which are rare in Russia, can be used.

Method 1: Disconnecting frequencies through the engineering menu (without root)

Most Xiaomi smartphones (starting with MIUI 10) allow you to change the modem settings through the engineering menu.This method works on the Redmi Note 11/12, POCO X4/F5, Xiaomi 12/13 series and others. You do not need root rights, but be careful - wrong actions can lead to a communication failure.

Instructions:

1. Open the Phone app and type the combination: ##4636## Some firmware may run an alternative code: ##36446337###
2. In the menu that opens, select Phone Information (or Phone Information).
3. Scroll down to the Set preferred network type section and select LTE only (if you want to leave only 4G).
4. Next, find the LTE Band (or NR Band for 5G) and manually specify your operator’s ranges by comma. For example, for MTS Russia, this will be: 3.7.20
5. Press Set or Apply and restart the phone.

If the signal is lost after the reboot, go back to the engineering menu and reset the settings to the factory (Restore Default). On some models (POCO M4 Pro, Redmi 9A), the engineering menu may be blocked - in this case, use the ADB method (described below).

⚠️ Attention: On firmware MIUI Global Stable after upgrading to the new version of Android, the engineering menu can reset settings. ADB (3-way).

Method 2: Configure frequencies through hidden MIUI menus

In the latest versions of MIUI 13/14, developers have hidden some of the network settings, but they can be returned using code to activate hidden menus.This method is suitable for Xiaomi 13/13 Pro, Redmi Note 12 Pro+ and other flagships from 2022-2026.

Steps:

1. Open Settings → About the phone and tap 7 times on the MIUI version to activate the developer mode.
2. Return to the main settings menu and open Additional → for developers.
3. Activate the USB Debugging and OEM Unlock switch (the latter is not necessary, but may be necessary).
4. Install Activity Launcher from Google Play and open it.
5. In the search, type in MobileNetworkSettings and select an activity with that name.
6. In the menu that opens, find Preferred Network Mode and LTE Band Selection, where you can manually specify ranges.

If Activity Launcher doesn’t find the menu you want, try an alternative way:

• 📱 Install Shortcut Maker and create a shortcut for com.android.settings.Settings$MobileNetworkSettingsActivity.
• 🔧 Some firmware may have different paths – look for activity with words Mobile or Network.

After the frequency change, check the Internet speed with Speedtest or Ookle. If the speed drops, you may have turned off the main range - return one of the priority (for example, B3 or B7).

Method 3: Using ADB to permanently shut down frequencies

If the engineering menu is reset after restarting, the most reliable way is to change the modem settings via the ADB. This method requires a computer, but the changes will persist even after the updates. POCO Based on Android 10 and newer.

What you need:

• 🖥️ Computer with Windows/Linux/macOS;
• 🔌 Cable USB (preferably original);
• 📱 Included debugging by USB phone-on;
• 🛠️ Platform Tools (download from Google website).

Step-by-step:

1. Download and unpack Platform Tools into a separate folder.
2. Connect the phone to your computer and select File Transfer mode.
3. Open the command line (Windows) or terminal (Linux/macOS) in the folder with Platform Tools.
4. Enter the command to check the connection: Adb devices should appear the name of your device.
5. Give permission to debug on the phone (a pop-up window will appear).
6. Enter the command to view the current modem settings: adb shell settings list global | grep preferred_network
7. To set only the desired ranges (for example, B3, B7, B20 For MTS, use: adb shell settings put global preferred_network_mode_lte_bands "3,7,20"
8. To apply the changes, restart your phone: adb reboot

To return the default settings, use the command:

adb shell settings delete global preferred_network_mode_lte_bands

⚠️ Note: On some models (Xiaomi) 12S Ultra, Redmi K50 Pro) after frequency changes through ADB You may not be able to call VoLTE. To return it, activate the option of Volte Calls in the settings. SIM-map.

💡

ADB-The method is the only way to permanently disable unnecessary frequencies without rooting permissions, and the changes will persist even after resetting the network settings.

Method 4: Using applications for frequency management

If you don't want to mess with the engineering menu or the ADB, you can use specialized applications that simplify the process, but require root rights or at least an unlocked bootloader.

Network Signal Guru (without root but with limitations)

The app allows you to view current frequencies and manually select priority ranges. Suitable for MIUI 12-14, but not all functions work without root:

• 📊 Shows the current band, signal level and neighboring towers;
• 🔄 Allows you to manually switch between ranges (without constant saving);
• 📡 Frequency databases of operators by country.

MTK Engineering Mode (for MediaTek chip phones)

If your Xiaomi is running on a MediaTek processor (Redmi 10C, POCO M4 Pro, Xiaomi Civi 2), this app gives you extended access to the modem settings:

1. Install MTK Engineering Mode from Google Play.
2. Go to the BandMode section.
3. Choose yours. SIM-map and tick only the desired ranges.
4. Save the settings and restart the phone.

For phones on Qualcomm Snapdragon (Xiaomi 13, POCO F5, Redmi Note 12 Pro+) will suit the application Qualcomm Band Selector, but it requires root rights.

💡

Before using any frequency change applications, check reviews on 4PDA or XDA Developers – some utilities may contain advertising software or may not work properly with the latest versions of MIUI.

What to do if the signal is lost after the switch off

If you're wrong about settings and your phone is no longer catching the network, don't panic. Here's an algorithm to reconnect.

1. Reset network settings: Go to Settings → SIM-maps and mobile networks → Reset the network settings, which will return all modem parameters to the factory.
2. Restore your settings via the Engineering menu: Enter ##4636##, select Phone Information and click Restore Default.
3. Use it. ADB Connect your phone to your computer and execute the command: adb shell settings delete global preferred_network_mode_lte_bands
4. Check the physical. SIM-Map: Sometimes the problem is not the settings, it's the bad contact. SIM-map.
5. Update your firmware: Go to Settings → About Phone → Update your system and install the latest version of MIUI. Sometimes network bugs get fixed in new builds.

If nothing works, do a full reset (Settings → About Phone → Resetting). Before you do, back up your data!

⚠️ Note: On some models (Xiaomi) 11T Pro, Redmi K40) After a failed frequency manipulation, the frequency may disappear. IMEI. In this case, you will need to restore it through an engineering menu or service center.

FAQ: Frequent questions about switching off frequencies on Xiaomi