How to Enable 4G (LTE) Mode on Xiaomi Smartphone: The Complete Guide to 2026

Why Xiaomi May Not Work 4G and How to Fix It

You have bought a new smartphone Xiaomi Redmi, POCO Or Mi, inserted. SIM-support-card 4G, But the internet only works. 3G This problem is familiar to many users, and the reasons can be in the settings of the phone and in the parameters of the mobile network. In 90% of cases, the solution takes no more than 5 minutes - just turn on the correct network mode or update the operator configuration.

In this article, we will discuss all possible ways of activation. 4G on Xiaomi devices, including hidden settings for power users.You will learn how to check compatibility SIM-maps, prioritize networks, update the operator profile, and even manually add settings APN. And if standard methods do not work, you will find instructions for resetting network settings and diagnosing hardware problems.

Note that the algorithm may vary slightly depending on the version of MIUI (e.g. MIUI 14 vs HyperOS) and the model of the smartphone, but the general logic remains the same. Let's start with the simplest one: checking the basic settings.

Method 1: Enabling 4G through basic network settings

The first thing to do is make sure that the phone’s settings are the right network mode. By default, Xiaomi often sets automatic selections, which do not always correctly determine the priority of 4G. Here’s how to fix this:

1. Open the Settings app (the gear icon on the home screen).
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 value of 4G (preferably) or LTE/4G/3G/2G (auto).

If there is no 4G option on the list, it could mean:

• 📱 Yours. SIM-card does not support 4G (obsolete tariff or physical format).
• 📡 There is no coverage in your area. 4G (Check the operator's coverage map).
• 🔧 The phone has disabled additional settings (more on this below).

SIM-card 4G (check with the operator)

Phone unlocked (not tied to operator)

The settings have been chosen correctly SIM-map

The device is in the coverage area 4G-->

After changing your settings, restart your phone. If your network indicator hasn’t changed to 4G or LTE within 1-2 minutes, move on to the next method.

Method 2: Update the Operator Configuration (APN)

Incorrect APN (Access Point Name) settings are one of the most common reasons for the lack of 4G. These settings determine how the phone connects to the carrier’s network, and if they are lost or outdated, Internet speeds may be limited to 3G.

Try the automatic update first:

1. Go to Settings → SIM-cards and mobile networks.
2. Choose yours. SIM-map and press Access Points (APN).
3. In the upper right corner, tap three points (⋮) and select Reset to default values.
4. Confirm the action and restart the phone.

If automatic reset didn't help, add APN manually.

After saving the new APN settings, select the profile you created in the list and restart your phone. If 4G doesn't show up after 5 minutes, check if mobile internet is active in the notification panel.

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If you manually enter the APN, delete the profile you created and go back to the factory settings, and you may be using dynamic settings that are not compatible with manual input.

Method 3: Resetting network settings

If previous methods failed, a software failure in the communication module may be the cause, in which case resetting network settings to factory settings helps, which deletes all stored Wi-Fi networks, passwords and mobile Internet settings, but does not affect personal data.

Instructions:

1. Open the Settings. → The phone.
2. Tap 5-7 times on the MIUI version to activate the developer mode (if it is not already enabled).
3. Return to the main settings menu and select Additional → Reset.
4. Click Reset Network Settings and confirm the action.

⚠️ Warning: After resetting, you will have to reconnect to all Wi-Fi networks and configure mobile Internet. Save passwords in advance or take screenshots of settings APN.

If the reset didn't work, try to switch flight mode for 30 seconds and then turn it off, which sometimes resets the temporary errors of the communication module.

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Method 4: Verification of compatibility SIM-maps and telephones

Even if your rate supports 4G, herself SIM-The card may be outdated.Operators regularly update the card standards, and older samples (released before 2015-2017) are often incompatible with modern networks. LTE. Here's how to check:

• 🔍 Physical format: Make sure you use nano-SIM (smallest size) micro- and standard SIM They may not be in contact with the slot.
• 📅 Release date: Cards older than 5-7 years should be replaced. Contact the operator's cabin with a passport - the replacement will be free of charge.
• 📶 Tariff Plan: Some budget tariffs limit speed to 3G. Check the conditions on the operator’s website.

Critical moment: Xiaomi smartphones with support for two SIM-Cards (e.g. Redmi Note 12 Pro)+ or POCO X5 Pro) may limit 4G Only for the main slot (usually) SIM 1) If you inserted the card in the second slot, try to swap them.

Also check if your phone is unlocked. Some devices purchased from carriers (such as MTS or Beeline) may be connected to their network, in which case the 4G of other carriers will not work.

##4636##

In the menu that opens, select Phone Information and check the Network Lock Status.

Method 5: Manually select the operator network

Sometimes the phone can’t automatically connect to 4G because of roaming errors or setting conflicts, and manual operator selection can help:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-Map and press Network Operators.
3. Turn off the automatic selection option.
4. Wait for the phone to find the available networks and select your carrier manually (e.g. MTS-RU or Beeline RU).

If your operator is not listed or an error appears, Registration in the network failed, this may indicate:

• 🚫 Lockdown IMEI (Check through *#06#).
• 📡 Problems on the operator side (check by support number).
• 🔌 Communication module malfunction (diagnosis required).

⚠️ Warning: If, after manually selecting the network, the phone stopped picking up the signal at all, return to automatic mode and restart the device. In rare cases, manual selection can lead to temporary loss of communication.

Method 6: Checking for hardware problems

If none of the software methods worked, it could be a hardware malfunction, and here are the signs that indicate this:

• 📵 The phone does not catch any network (no 2G, neither 3G, neither 4G).
• 🔌 The antenna symbol in the statusbar is crossed or flashed.
• 🔄 After the reboot, the network appears, but after a few minutes disappears.
• 📱 The phone fell or came into contact with water.

The most common hardware problems:

1. Damaged. SIM-Check if the contacts inside the slot are bent (light carefully with a flashlight). If the contacts are oxidized, clean them with alcohol.
2. In Xiaomi, the chip is responsible for receiving the signal, which can fail if it overheats or falls, and is only diagnosed at a service center.
3. In some models (like the Redmi Note 10 Pro), the antenna tracks are located under the back cover, and if the phone was disassembled, they could get damaged.

For primary diagnosis:

1. Try inserting. SIM-card to another phone, if there is 4G It works, the problem is in your device.
2. Check if the network is catching in recovery mode (clip Power + Volume up when turned on).
3. Install Network Signal Guru from Google Play, which will show you detailed information about signal strength and supported frequencies.

Additional tips for experienced users

If standard methods have failed and hardware problems are ruled out, try these advanced methods:

• 🔧 Change network mode via the engineering menu. Enter the code ##4636##. Select Phone Information. Under Network Type Installation, select LTE only (only) 4G).

⚠️ Note: In this mode, the phone will not be able to call 2G/3G. If calls are more important than the internet, choose LTE/WCDMA/auto.

Forced activation of VoLTE.

Settings → SIM-map → Challenge 4G (VoLTE)

IMSI shift.

For Xiaomi owners on HyperOS (new firmware 2026): the path to network settings may be different.Look for the Mobile Network section in the main settings menu or use the Settings search (loop icon at the top).

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If after all the manipulations 4G and did not work, and on other phones with your SIM-card everything works - the problem is exactly in the hardware of your Xiaomi.

FAQ: Frequent questions about 4G on Xiaomi