How to properly connect and configure 4G on Xiaomi smartphones: from APN to troubleshooting

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

You have bought a new Xiaomi Redmi Note 13 or POCO X6 Pro, put it in. SIM-The map and the mobile Internet works only in mode 3G — This problem is familiar to many owners of Xiaomi smartphones, and the reasons can lie in the settings of the phone and the parameters of the operator. 90% of the time, the decision takes no more than 5 minutes, if you know where to poke».

In this article, we will look at all possible ways to connect 4G, from basic activation in the menu to manually configuring access points (APN) and diagnosing hardware problems. We will focus on the nuances for different models (Redmi, POCO, Mi) and operators (MTS, Beeline, MegaFon, Tele2). If after reading you have questions, check the FAQ at the end of the article, where you collect answers to typical “pitfalls”.

Before you go to the settings, make sure that:

• 📶 Yours. SIM-card 4G/LTE (Check with the operator or check on another phone).
• 📱 Xiaomi smartphone is compatible with frequencies 4G your operator (e.g. Redmi) 9A Does not support Band 20, which uses Tele2 in some regions).
• 💰 There are enough funds in the account (some operators block the Internet with zero balance).

Step 1: Check the basic 4G settings on Xiaomi

Start with the simplest thing: make sure your phone is on mobile and you have the right network mode. Even if you think it's all-inclusive, go through this checklist:

Is the In-Air mode enabled (Settings → Connections → Flight mode)

Mobile data transmission is activated (Settings) → SIM-maps and mobile networks → Mobile Internet)

Whether the right one is chosen SIM-card (if two of them)

Is the network regime established? 4G/LTE (Settings → SIM-maps and mobile networks → Preferred type of network)

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Xiaomi may have a default 3G/2G (auto) mode, which needs to be changed to 4G/3G/2G (auto) or 4G Only (if you are sure of the coverage).

1. Open Settings (the gear icon on the main screen).
2. Move to the SIM-maps and mobile networks.
3. Choose yours. SIM-card (if there are several).
4. Click on Preferred Network Type and install 4G.

Important for two. SIM-If you have a Xiaomi with two slots (for example, Redmi Note 12 Pro)+), Check that mobile data is included for the SIM, supportive 4G. Sometimes the phone defaults to assign the Internet to a second card where there is no Internet connection. LTE.

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If after changing the network mode 4G did not appear, restart the phone - it will reset the temporary errors of the communication module.

Step 2: Manually setup APN for 4G on Xiaomi

If the basic settings didn’t help, there’s likely a problem in the access points (APN). This is the "address" that the phone uses to connect to the carrier's Internet. APN set up automatically, but sometimes manual input is required – especially after resetting or changing SIM-map.

Instructions for setting up APNs for popular operators:

1. Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Access points (APN).
2. Click Add Access Point (+ icon in upper right corner).
3. Fill in the fields according to the table below (leave the rest of the parameters by default).
4. Save the settings and select the APN profile you created.

Critical detail: if you use Yota or Tinkoff Mobile, APN is yota.ru (no username or password), and many users mistakenly type in data from the Big Four, which makes 4G inoperable.

⚠️ Attention: After saving APN Restart your phone or the changes may not apply. APN Your new access point is selected (sometimes the phone will return to the old one).

Step 3: Checking the compatibility of 4G frequencies

If 4G has not worked after all the manipulations, the problem may be in the frequency incompatibility, because operators in Russia use different bands for LTE, and Xiaomi smartphones (especially budget models) do not always support them.

• 📡 MTS and MegaFon are actively using Band 7 (2600 MHz) and Band 20 (800 MHz).
• 📡 Beeline - Band 3 (1800 MHz) and Band 7.
• 📡 Tele2 – Band 20 (in regions) and Band 3.

To find out what frequencies your Xiaomi supports, look for the model on the GSMArena website (Network section).For example, Redmi 10C does not support Band 20, so Tele2 will only have 3G on some regions.

Solutions if frequencies are incompatible:

1. Change the operator to the one whose frequencies your Xiaomi supports.
2. Buy the outside. 4G-antenna (relevant for homes / cottages with a weak signal).
3. Use Wi-Fi instead of mobile internet.

Step 4: Diagnostics of software failures

If 4G used to work and then it went missing, it's the fault of the software.

1. Network Settings Reset: Go to Settings → System → Settings Reset → Network Settings Reset. This will delete all stored Wi-Fi and APN, but often solves the problem.
2. Firmware Update: Go to Settings → About Phone → Update system and install the latest version of MIUI. New firmware often fixes errors of the communication module.
3. Cache Clearing: Open Settings → Annexes → Application management → Three points (⋮) → Show system-based → Phone services. Press Warehouse. → Clear the cache.

⚠️ Note: If after resetting the network settings 4G I have been working, but I have lost it again, and the problem may be SIM-Try inserting it into another phone or replacing it in the operator's cabin.

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Resetting network settings is the most effective way to fix 4G software errors, but after that you will have to re-enter Wi-Fi passwords and configure APNs.

Step 5: Checking for hardware problems

If none of these methods worked, there may be a problem with iron:

• 🔌 The slot is damaged. SIM-Cards (try inserting the card into another slot if you have one).
• 📡 The antenna is malfunctioning. 4G (Often breaks down after falls or moisture).
• 🔋 Failure in the communication module (requires repair in the service center).

How to check for hardware malfunction:

1. Put it in. SIM-card to another phone if 4G It works, the problem is your Xiaomi.
2. Try another one. SIM-The card on your phone if 4G It doesn’t work with any of them, it’s iron.
3. See if the phone is catching other networks (3G, 2G). If not, the communication module is faulty.

If you suspect a hardware breakdown, don't try to disassemble the phone yourself - Xiaomi has a complex antenna design, and without experience, you can aggravate the problem.

Step 6: Alternative ways to connect to 4G

If you can’t set up 4G on your phone, but you need the Internet urgently, use alternative methods:

• 📶 Modem mode: connect the phone to the laptop USB and distribute the Internet from another device (for example, with Xiaomi Mi Router).
• 🔄 Wi-Fi Calling: If your operator supports this feature (for example, MTS or MegaFon), enable it in Settings → SIM-maps and mobile networks → Additionally. → Wi-Fi calls.
• 📡 Outside 4G-modem: buy USB-modem (e.g. Huawei) E3372) Use it instead of mobile internet on your phone.

Also check if the phone has Traffic Saving feature (Settings → Connections → Traffic Saving) on it, which can limit internet speeds, making 4G work like 3G.

FAQ: Frequent questions about 4G on Xiaomi