How to enable 4G on Xiaomi Redmi 8: all ways to activate LTE

Why Redmi 8 doesn’t run 4G and how to fix it

Xiaomi Redmi 8 smartphone supports networks 4G LTE, But sometimes users are faced with the fact that the device works hard only in mode. 3G or 2G. The reasons can vary from trivial settings to operator hardware limitations. In this article, we will discuss all possible ways to enable 4G, including hidden settings MIUI, check-up SIM-maps and diagnostics of malfunctions.

It's important to understand that the problem isn't always with the phone. For example, if you're traveling, a local carrier might block LTE for roaming subscribers. Or your tariff doesn't initially support high-speed Internet. Before digging into Redmi 8's settings, make sure the problem isn't on the provider's side -- call support or check the balance.

If the data is fine, and the smartphone is stubbornly not catching 4G, we start with a diagnosis, and let's start with the simplest thing - checking the network mode in the settings.

Method 1: Enable 4G through basic MIUI settings

The most obvious method is to activate LTE in the mobile network menu. On Redmi 8, the path to these settings may vary depending on the version of MIUI, but the general scheme is as follows:

1. Open the Settings app (the gear icon on the desktop).
2. Go to SIM cards and mobile networks (or Mobile network in older versions).
3. Choose yours. SIM-card (if two of them).
4. Tap on the network type (or preferred network type).
5. Set the 4G (preferably) or LTE value.

When you change your settings, the phone will automatically reconnect to the network, and if there is no 4G option on the list, it can mean:

• 📱 Yours. SIM-card does not support LTE (obsolete format or tariff without 4G).
• 📡 There is no coverage in your area. 4G (Check the operator's coverage map).
• 🔧 The phone activated energy saving mode, blocking LTE.

Make sure that SIM-card 4G

Check the balance and tariff activity with LTE

Turn off the power saving mode

Restart your phone before settings

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If after choosing 4G smartphone still works in 3G, move to the next method.

Method 2: Manual indication of network operator

Sometimes Redmi 8 can’t automatically determine the optimal connectivity settings, and manual operator selection can help:

1. Go to Settings → SIM cards and mobile networks.
2. Choose yours. SIM-map.
3. Tap Network Selection (or Network Operators).
4. Turn off the option automatically and wait until the search is complete.
5. Manually select your operator (for example, MTS-RU, Beeline, etc.).

After manual selection, the network may temporarily disappear, which is normal, and in 10 to 30 seconds, the connection will recover, and if your operator is not on the list, or if the error "Can't register with the network" appears, this is a signal of more serious problems:

⚠️ Note: If Redmi 8 does not find any operator in a manual search, this may indicate a malfunction of the communication module or antenna.

It’s also worth checking if your phone is activated in flight mode or modem mode, which blocks mobile internet, swipe down to open the notification panel and make sure the icons are not illuminated.

Method 3: Configure Access Points (APN)

Wrong parameters APN (Access Point Name – a common reason for missing 4G. Operators update these settings periodically, but the phone doesn't always pull them up automatically. APN manually:

1. Go to Settings → SIM cards and mobile networks → [Your SIM] → Access Points (APN).
2. If you have saved profiles, delete them (click on profile → Delete).
3. Add an access point and enter your operator’s settings.

Below are the current APN settings for popular Russian operators (2026):

Once you enter the settings, save the profile and restart the phone, and if the APN is set up correctly, a dot will appear next to the profile name, which means that it is active.

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If the Internet does not work after setting up the APN, try to temporarily turn off Wi-Fi - sometimes MIUI will prioritize the wireless network even with a weak signal.

Method 4: Resetting network settings

If previous methods didn’t work, try resetting your network settings to factory settings, which will remove all stored Wi-Fi networks, passwords and mobile internet settings, but often solves 4G problems.

1. Open Settings → System and device → Additional → Resetting.
2. Select Network Reset (not to be confused with a full reset!).
3. Confirm the action by entering a pattern lock or PIN-code.

After the reset, the phone will restart.

• 🔄 Connect to Wi-Fi.
• 📶 Set up mobile internet (APN Automatically downloaded or manual input required).
• 🔑 Enter passwords for previously saved networks.

⚠️ Note: Network reset does not delete personal data (photos, messages, apps), but if you have used VPN Or a proxy, their settings will also reset.

If 4G doesn't appear after the reset, the problem may lie in the firmware or hardware, and this is discussed in the next section.

Method 5: Update firmware and check the communication module

Redmi 8 with firmware older than MIUI 12.5 may not support new 4G bands, especially for regional operators. Xiaomi regularly releases updates to fix such problems.

1. Go to Settings → About the phone → System update.
2. Put a tap on the updates.
3. If a new version is available, download and install it (preferably via Wi-Fi).

If there are no updates or the installation did not help, check the operability of the communication module:

• 📞 Call from the phone – if the calls work, but the Internet does not, the problem is more software.
• 🔍 Type ##4636## in the dialer, select Phone Information and check the Set preferred network type. LTE, This may indicate a hardware failure.
• 🔧 Try inserting. SIM-card to another phone, if there is 4G It's working, the problem is Redmi 8.

If all tests indicate a defect in the module, contact the service center.The average cost of repairing a communication module on Redmi 8 in 2026 is from 1500 to 3000 rubles (depending on the region and workshop).

Additional Tips for a Stable 4G

Even if you've managed to turn on 4G, the connection can be unstable. Here are some recommendations for improving the signal:

• 📶 Turn off automatic network selection: Manually select range 4G (LTE) Instead of a car, the phone doesn’t switch to a car. 3G low-signal.
• 🔋 Watch the battery: At a charge level below 15%, Redmi 8 can force you to shut down LTE energy-saving.
• 📱 Use original firmware: Castom builds (like LineageOS) may not support all ranges 4G your operator.
• 🛡️ Turn it off. VPN: Some of them VPN-Services block mobile traffic or reduce its priority.

If you often lose network indoors, try using a signal repeater (4G amplifier). Redmi 8 will suit models from TP-Link or Huawei with support for 800/1800/2600 MHz bands.

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If 4G It is unstable, try to disable the "VoLTE" function in the settings SIM-Maps – sometimes it conflicts with data transmission.

FAQ: Frequent 4G questions on Redmi 8