How to Connect and Configure 4G on Xiaomi Smartphones: A Complete Guide

Xiaomi smartphones are some of the most popular devices on the market due to their price-to-function ratio, but users sometimes experience problems connecting to 4G/LTE networks. The lack of high-speed Internet can be due to incorrect settings, operator errors or hardware limitations. In this article, we will discuss all possible ways to activate 4G on Redmi, POCO and Mi devices, and also explain how to diagnose and fix typical problems.

It is important to understand that the connection algorithm may vary depending on the smartphone model, MIUI version and region of sale. For example, some devices for the Chinese market do not initially support the 4G bands used in Russia or Europe.

If you’ve just bought a Xiaomi smartphone or have a problem with a firmware update, this guide will help you get your mobile internet back on track, starting with the basic settings and moving on to advanced methods.

1. Check 4G support for your Xiaomi model

Before setting up a network, make sure your smartphone physically supports 4G. Some budget models (like the Redmi 4A or Redmi 5A) can only work on 3G networks, and Chinese versions of devices often lack support for European LTE frequencies.

To check the compatibility:

• 🔍 See the specifications on the official Xiaomi website (enter the model in the search).
• 📡 Use services like FrequencyCheck to compare supported bands to your carrier’s frequencies.
• 📱 Enter the search query type: "[your model] support 4G [your operator]".

Example: Redmi Note 10 Pro supports ranges LTE B1/B3/B5/B7/B8/B20/B28/B38/B40/B41, which ensures stable operation 4G In Russia, all the major operators. POCO M3 The Chinese version may not catch some European frequencies.

If your model supports the list 4G, But the Internet is not working, so go to the next section. If you don't have support, consider buying an external one. 4G-modem.

2. Basic 4G settings on Xiaomi: step-by-step instructions

In most cases, it is enough to configure the mobile network settings correctly to activate 4G.

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. SIM-map for which you want to set up 4G (if).
4. Click on Network Type (or Preferred Network Type)
5. Set the 4G (preferably) or LTE value.
6. Activate the option to Enable VoLTE (if available) for 4G calls.
7. Reboot your smartphone so that the changes take effect.

After you reboot, check the network indicator in the top bar: if you see a message that says 4G or LTE, the setup was successful. If not, move to the next section.

The right type of network (4G/LTE) is selected

VoLTE activated (if supported)

SIM-The card is inserted into the correct slot (Slot 1 is usually a priority card)

Rebooting the device is completed-->

⚠️ Note: Some models (e.g. Redmi Note) 8 Pro) when choosing 4G may automatically shut down 2G/3G. If there is a weak signal in your area 4G, try out 3G/4G (motor-car).

3. Setup APN Access Points for 4G

If the basic settings didn't work, the problem could be in the wrong APN (Access Point Name) settings, each operator providing their own unique data to connect to the network, which is usually set up automatically, but sometimes requires manual input.

To set up APN on Xiaomi:

1. Go to Settings. → SIM-maps and mobile networks → [yours SIM] → Access points (APN).
2. Click on the three dots in the top right corner and select the New Access Point.
3. Fill in the fields according to your operator’s data (see the table below).
4. Save the settings and select the profile you created in the list.
5. Reboot your smartphone.

If, after setting up, APN 4G I didn't make it, try it:

• 🔄 Remove all other access points, leaving only one.
• 📵 Temporarily shut down SIM-map and insert it again.
• 📞 Call the operator and request to send automatic settings (usually arrives) SMS).

💡

If you don't have Internet after manually setting up your APN, try resetting your network settings: Settings → System → Reset → Network Reset. This will delete all stored Wi-Fi and mobile settings, but often solves the problem.

4.Problems with SIM-card-and-slot

On Xiaomi smartphones with two SIM-cards (Dual) SIM) Often there are conflicts when connecting 4G. Many models (such as the Redmi Note 11) POCO X3 Pros support 4G Only on the first slot (Slot 1). SIM In slot 2, the network can only operate in the mode 3G.

How to check and correct:

• 🔄 Replace it. SIM-a card from slot 2 to slot 1 (usually marked as SIM 1 or Primary).
• 📱 Make sure that the correct setting is selected SIM for mobile data: Settings → SIM-map → Mobile data → Choose. SIM.
• 🔧 On some models (e.g., Mi). 10T) customized SIM you can turn on the option 4G both SIM, But it can slow down.

A critical nuance: on devices with a hybrid slot (SIM + microSD) when installing a memory card, the second slot can completely shut down, in which case 4G will only work on the first SIM.

⚠️ Note: If you use two of these SIM-Cards from different operators, check if one of them blocks the work 4G. For example, some Tele2 tariffs limit speed when the second is active. SIM.

5. Update firmware and reset settings

If 4G stopped working after a MIUI update or firmware, the problem could be a software failure.

• 🔄 Update to the latest version MIUI: Go to Settings. → The phone. → Update system. Click Check for updates and install available patches. After the update, restart the device.

Resetting network settings:

Settings → System → Reset → Network settings reset

This will delete all stored Wi-Fi and mobile settings, but will not affect personal data.

Hard reset (if nothing helps):

Settings → System → Reset → Reset all settings

Attention:

Once you reset, you'll have to reconfigure APN and network settings, as described in the previous sections, and if the problem persists, you may need to flash it through Fastboot or Recovery, but that's a topic for a separate article.

💡

The firmware update often solves 4G issues, especially if they came after the previous update. Xiaomi regularly releases patches to improve compatibility with local carriers.

6.Coverage verification and alternative solutions

If you’ve tried all the settings, but 4G still doesn’t work, the problem may be external.

• 📡 Weak coverage 4G: Check your carrier's coverage map (such as MTS or Beeline) in some areas 4G may not be available.
• 📵 Lockdown IMEI: If you buy a smartphone from abroad or from your hands, it is IMEI You may have been blocked. Check the status on IMEI.info.
• 🔒 Operator restrictions: Some tariffs (for example, Tele2’s “Talk” do not include 4G. Check the conditions with the operator.