How to turn it on LTE Xiaomi smartphones: a complete guide to solving typical problems

You bought a new smartphone Xiaomi or Redmi, inserted SIM-map, but the Internet only works in 3G or+, Although the operator promises to cover 4G/LTE? Or after the update. MIUI And the problem is, is it that the mobile network suddenly stops picking up the high-speed signal? This problem is familiar to many users, and it's easy to solve. 90% In some cases, it is not hardware faults that are to blame, but incorrect settings or software failures.

In this article, we will discuss all possible ways to include LTE on Xiaomi smartphones, POCO And Redmi, from basic settings to hidden engineering menus, you'll learn how to test your model's network support, what parameters affect Internet speed, and what to do if, even after all the manipulations, the network never worked. We also have unique solutions for specific errors that are not described in the official documentation (for example, the problem with the “gray” switch). LTE conflict SIM-map).

1. Verification of support LTE Your Xiaomi model

Before trying to turn on 4G, Make sure your smartphone supports this technology at all. Even Xiaomi's budget models of recent years are equipped with the technology. LTE-modems, but old devices (e.g. Redmi) 3S or Mi 4i) It can only work on networks. 3G.

How to check:

• 🔍 Check out the specifications of the model on the official Xiaomi website (section "Specifications" → "Network & Connectivity. Look for lines like LTE band 1/3/5/7/8/20.
• 📱 Enter the search in Google: [your model] LTE support (e.g. Redmi Note 10 Pro) LTE support).
• 🛠️ Install the app CPU-Z (available in the Play Market and check the "Device" tab" → "Network." If it says so, LTE — Your device supports the technology.

Pay special attention to bands, for example, if your Xiaomi supports only bands. B3 (1800 MHz), and the operator broadcasts on B7 (2600 MHz, then LTE It won't work. In Russia, the most demanded ranges:

⚠️ Note: If your Xiaomi is purchased abroad (e.g., the Chinese version of the Mi 11 for Asia), it may not support the Russian version. LTE-In this case, only firmware with local frequencies or buying a new device will help.

Basic settings LTE into MIUI: step-by-step

If your smartphone supports you 4G, But the network doesn't turn on automatically, so first check the standard settings. Most of the time, the problem is solved in 2 minutes:

1. Open the Settings app (the gear icon on the desktop).
2. Go to section. SIM-Maps and mobile networks (or Mobile Network in older versions) MIUI).
3. Choose yours. SIM-card (if two of them).
4. Click on Network Type (or Preferred Network Type)
5. Set the 4G (preferably) or LTE value.
6. Go back and activate the Mobile Data Switch (if it is turned off).
7. Reboot your smartphone.

After the reboot, an inscription should appear next to the network indicator. 4G or LTE. If this does not happen, move on to the next section.

The right one. SIM-card (if two of them)

The network type is set to "4G (preferably)"

Mobile data included

The smartphone is rebooted after changes-->

In some models (for example, POCO X3 Pro or Redmi Note 11) There may be no option 4G (Instead, there will be options like 3G/4G (car - choose it.

MTS

Beeline

MegaFon

Tele2

iota

Other-->

Problems with the grey switch LTE and their decisions

One of the most common problems is when the network settings are optional. 4G/LTE It's inactive, and it's impossible to pick it up. It can happen for a number of reasons:

• 📶 No coverage LTE in your area (check the operator's coverage map).
• 🔄 Failure to work SIM-Cards (e.g. outdated service profile).
• 📱 Software glitch MIUI (especially after updates).
• 🔧 Hardware malfunction (damaged modem or antenna).

How to eliminate:

Method 1: Updating the service profile SIM-map

Sometimes operators update their network settings, but these changes are not automatically applied to force the profile to be updated:

1. Open the Phone app.
2. Dial the combination: ##4636## (Engineering menu opens).
3. Select Phone Information.
4. Scroll down and click Update profile PRL (or Update Profile).
5. Wait. 1-2 minutes and restart the smartphone.

Method 2: Reset network settings

If the profile update didn’t help, reset your network settings to factory:

1. Go to Settings → About the phone → Reset settings.
2. Select Reset Wi-Fi, Mobile Network and Bluetooth settings.
3. Confirm the action and wait for the process to be completed.
4. After restarting, re-set the connection to the mobile network.

⚠️ Warning: Network reset will delete all stored Wi-Fi passwords and associated Bluetooth devices.

Method 3: Manual indication of network operator

Sometimes, a smartphone can't automatically determine the optimal network settings. Try manually selecting the operator:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map → Network operators.
3. Turn off the option Automatically and wait until the list of operators loads.
4. Choose your provider manually (such as MTS or Beeline).
5. Save the changes and restart the phone.

💡

If, after manual selection of the operator, LTE It never worked, try to return the setting to "Automatically" mode through 5-10 Sometimes it helps to wake up the modem.

4. Problems with two SIM-How to make cards LTE work out

Many Xiaomi models (e.g. Redmi Note 10 Pro) POCO F3) Supporting Dual 4G — both SIM-The cards can work simultaneously on networks. LTE. But the default is often only one network activated. Here's how to turn on it. 4G both SIM-card:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose the first one. SIM-map and install 4G (preferably).
3. Go back and choose the second one. SIM-map - do the same thing.
4. Scroll down and find the Dual option. 4G (or turn on 4G both SIM). Activate it.
5. Reboot your smartphone.

If the options are dual 4G No menu, so your model doesn't support it. SIM-The card can work LTE, And the second one will be limited. 3G/2G. To choose which of SIM will be "priority":

• 📞 Go to Settings. → SIM-maps and mobile networks → Mobile data.
• 🔄 Choose. SIM-The card you want to activate 4G.
• 📶 Make sure that the network type is installed for it. 4G (preferably).

⚠️ Attention: On some firmware MIUI duality 4G To activate it, you need to go to Phone information in the engineering menu (#4636##) and manually set the setpreferrednetworkmode setting for both slots!

5. Hidden settings LTE: engineering menu and AT-team

If standard methods do not work, you can try to force the switch on. LTE through an engineering menu or special AT-These methods are suitable for advanced users, as incorrect actions can disrupt the modem.

Method 1: Engineering menu (MTK qualcomm)

For MediaTek and Qualcomm processors, the path to settings is different:

For MediaTek (Helio, Dimensity):

1. Enter the code: ##4636###.
2. Select Phone Information.
3. In the Set preferred network type, set:

Turn off radio

Turn on radio

For Qualcomm (Snapdragon):

1. Enter the code ##4636## → Phone information.
2. Scroll down to the Network block.
3. In the drop-down menu Preferred network mode, select:

Update

Method 2: AT-commands through the terminal

For advanced users, there is a way to send AT-- You'll need a command directly to the modem:

1. Install Terminal Emulator (from Play Market)
2. Enter the command:

su


echo "AT+QCFG=\"nwscanseq\",01,1" > /dev/ttyUSB2




echo "AT+QCFG=\"nwscanmode\",3,1" > /dev/ttyUSB2




echo "AT+QCFG=\"iotopmode\",0,1" > /dev/ttyUSB2

These teams are forced to prioritize LTE first-slot SIM-For the second slot, replace the cards. ttyUSB2 on ttyUSB3.

⚠️ Attention: Misuse of the right AT-If you're not sure what you're doing, you might lose your network or even get your modem "bricked up.

6. Software failures and their elimination

If LTE It was previously used, but after the update MIUI or the application installations stopped turning on, the software is to blame. 4G:

Method 1: Clearing the cache and data of the "Telephone Services"

Sometimes the crash happens because of a damaged cache of the system application com.android.phone.

1. Open Settings → Applications → Application Management.
2. Click on the three dots in the upper right corner and select Show all processes.
3. Find the Phone Services (or Phone Services) app.
4. Click Warehouse → Clear the cache and Clear the data.
5. Reboot your smartphone.

Method 2: Reverse updates MIUI

If the problem appears immediately after the firmware update, try rolling back to the previous version:

1. Download the stable version of MIUI for your model from the official Xiaomi website.
2. Rename the file to update.zip and place it in the root of the phone’s memory.
3. Open the Update (or Updater) app.
4. Click on the three dots in the upper right corner and select Select the firmware file.
5. Please specify the path to update.zip and confirm the installation.

After the rollback, check the work LTE. If the network is working, report the bug through Mi Community (the official Xiaomi forum) so that developers fix the bug in new versions.

Method 3: Reset to factory settings

If nothing works, the last option is a complete reset.

• 📱 Make a backup of the data (via Settings) → The phone. → Backup).
• 🔐 Remember or take photos of logins / passwords from accounts.
• 📝 Keep the important ones. SMS (For example, with confirmation codes).

For discharge:

1. Go to Settings → About the phone → Reset settings.
2. Choose to erase all data.
3. Confirm the action and wait for the completion (it will take 5-10 minutes).

⚠️ Warning: Once reset, the phone will go back to out of the box, you'll have to reconfigure all settings, including Google and Xiaomi accounts. If you forget your Mi Account password, don't reset, it can block the device!

7. Hardware malfunctions: when it's time to go to the service center

If you have tried all the methods, but LTE It never worked, it could be the hardware:

• 📵 The smartphone does not catch any network (even if it is not a single one). 2G).
• 🔌 The network indicator is constantly blinking or disappearing.
• 🔧 After falling or getting moisture stopped working mobile communication.
• 📡 In the Engineering Menu (#4636##) the Network section displays Unknown or Disconnected.

Typical hardware breakdowns:

If you suspect a hardware breakdown:

1. Please contact the official Xiaomi service center (list on the Mi Service website).
2. Before visiting, make a backup copy of the data - during repairs they can be erased.
3. Check the cost of diagnosis (in some centers it is free).
4. If the phone is warranty, do not open it yourself, otherwise the warranty will burn.

💡

If LTE stopped working after falling, getting moisture or disassembling yourself - 99% of the problem is hardware.

8. Alternative ways to get high-speed Internet

If you include LTE Xiaomi has failed, but you need fast mobile internet, consider alternatives:

• 📶 Wi-Fi Calling: many operators (MTS, Beeline, MegaFon) support calls over Wi-Fi. → SIM-maps and mobile networks → Additionally. → Wi-Fi Calling.
• 🔄 Modem mode: distribute the Internet from another device (for example, a friend’s smartphone) through the Access Point.
• 📡 Outside 4G-modem: buy USB-modem (e.g. Huawei) E3372) and connect it to the phone through OTG-adapter.
• 📱 Replacement SIM-Maps: Sometimes the problem lies in the outdated SIM. Contact the operator for a new card (for example, USIM eSIM).

If you are often in a place with poor coverage 4G, try:

• 📍 Use apps like OpenSignal or NetMonster to find the nearest tower LTE.
• 🔋 Buy a signal repeater (amplifier) 4G) home-office.
• 📵 Enable the Network Only option in the settings 3G — sometimes the speed+ It is higher than in the overloaded LTE.

FAQ: Frequent questions about LTE on Xiaomi