How to put LTE on Xiaomi: full instructions with pictures and tips

Have you bought a new Xiaomi smartphone or upgraded your firmware, but mobile internet is slower than expected? Or is it not connecting to a 4G network at all? The problem is often not the operator, but the phone's settings are wrong. Even power users sometimes find that the smartphone stubbornly clings to 3G instead of LTE, although coverage in the region is excellent.

In this article, we’ll look at all the possible ways to enable 4G/LTE on Xiaomi, Redmi and POCO devices, from basic settings to hidden engineering menus, how to check your model’s frequency support, what parameters affect Internet speed, and what to do if the network “disappears” after the MIUI update. And we’ve also collected unique chips for models with MediaTek and Qualcomm processors that are not described in the official documentation.

We warn you right away that some methods require a superuser's rights, but most solutions work without them. Let's start with the simplest one!

1. Basic settings 4G/LTE into MIUI

The first thing you need to do is check the standard network settings, and even if you're sure that everything is set up correctly, sometimes the settings get lost after you update or reset.

Open the Settings. → SIM-Maps and mobile networks. Here, look at three key points:

• 📶 Network type: select 4G (recommended LTE/3G/2G (Option only 4G This can cause problems with voice calls (VoLTE must be enabled separately).
• 🔄 Automatic network selection: disable this option if you want to manually select an operator (relevant for roaming).
• 📡 Access points (APN): Click on your operator’s name and check that the fields are APN, Username and password are filled in correctly. APN — Internet or Internet.beeline.ru.

If the Internet doesn't work after the changes, restart the phone. Sometimes the communication module freezes and requires a restart.

2. Check your model’s 4G frequency support

Not all Xiaomi smartphones support the same LTE frequency set. For example, the Redmi Note 10 Pro (global version) does not catch the B20 (800 MHz) range, which is actively used by Tele2 in the regions. and the POCO X3 Pro may not see the B7 (2600 MHz) at Megaphone.

To find out what frequencies your phone supports:

1. Go to Kimovil or GSMArena.
2. Enter your Xiaomi model (e.g. Redmi 12 5G).
3. In the Network section, look for the lines of 4G bands or LTE.

Compare the ranges you find with those your carrier uses (you can find it on its official website), and if there are few matches, you’ll either have to accept 3G or buy another phone.

3. set up VoLTE and VoWiFi for stable communication

If you have 4G enabled, but when you make calls, the Internet is lost or the quality of communication deteriorates, the problem is with the VoLTE (LTE voice) and VoWiFi (Wi-Fi calls), which must be activated manually on most Xiaomi devices.

Instructions for MIUI 14:

• 📞 Go to Settings. → SIM-maps and mobile networks → [Yours. SIM] → Calls on 4G.
• 🔗 Turn on VoLTE and VoWiFi switches (if they are grey, your carrier doesn’t support these features).
• 🔄 Restart your phone – sometimes changes only apply after a reboot.

For models with MediaTek (such as the Redmi 10C or POCO M4 Pro), additional customization may be required:

1. Enter the dial number # #86583##.
2. Select VoLTE Provisioning.
3. Click Enable VoLTE and wait for the message of successful activation.

💡

If your mobile internet is gone after you turn on VoLTE, try disabling the feature and using a separate call app (like Google Phone).

4. Reset network and APN settings

If previous methods didn't work, there may have been conflicting settings in the system, and the most radical but effective way to reset the network settings to factory settings.

Attention, after the reset, you'll have to do it again.

• 🔐 Enter passwords from Wi-Fi.
• 📱 Configure Bluetooth devices.
• 📡 Manually select access points (APN).

Instructions:

1. Open Settings → About the phone → Reset settings.
2. Select Network Reset (not to be confused with a full reset!).
3. Confirm the action and wait for the reboot.

After reset, check if 4G is available. If not, move to the next section.

💡

Network reset removes all stored Wi-Fi passwords, but does not affect files, apps, and accounts.

5. Engineering menu and hidden LTE settings

For advanced users: Xiaomi has a hidden engineering menu where you can manually set LTE priority frequencies, disable unused bands and even change the power of the communication module.

How to open the engineering menu:

1. Open the Phone app.
2. Enter the combination: For Qualcomm: ##4636### For MediaTek: ##36446337### or #8255###

Telephone information

Network Lock

In the Set preferred network type menu, you can experiment with modes:

Record the current settings (take a screen picture)

Make sure the battery is charged >50%

Have a backup. SIM-test-card

Know the combination to reset (#4636## → “Restore default settings”)

-->

6.LTE issues after MIUI update

Many users are faced with the fact that after updating the firmware disappears 4G or the Internet speed drops significantly.

• 🐛 Bagami in new versions MIUI (Especially important for the Redmi Note 9/10).
• 🔄 Settings conflict APN post-update.
• 📡 Changes in energy saving policies (MIUI slug-off LTE).

Decisions:

1. Firmware rollback: If the problem appears after the update, try returning to the previous version via Settings → About Phone → System Update → Three Points → Select the Service Pack.
2. Manual APN installation: Sometimes the update resets the access point settings. Delete the current APN and create a new one manually (options can be found on the operator's website).
3. Disconnecting energy saving for SIM: Go to Settings. → Battery and productivity → Managing battery consumption by apps. SIM-maps and select without restrictions.

If nothing helps, check out the 4PDA or Xiaomi.eu forums – there may already be a patch for your model.

💡

Before rolling back the firmware, make a backup through Settings → Additional → Backup and Reset.

7. Hardware problems: when the phone is to blame

If you’ve tried all the software methods but 4G never worked, you might have a problem with the hardware:

• 📶 Damaged communication module: common after falls or moisture; symptoms - the phone does not see any network or shows only emergency calls.
• 🔌 Oxidized contacts SIM-maps: relevant for devices that have been operated in humid climates. SIM — If there is a green coating, clean the contacts with alcohol.
• 🔋 Weak antenna signal: some models (e.g. Redmi) 9A) have weak antennas for range B20. The solution is to use a signal repeater.

How to check the hardware serviceability:

1. Put it in. SIM-card to another phone, if there is 4G It works, the problem is your Xiaomi.
2. Try another one. SIM-Card (preferably another operator) on your phone.
3. Run the hardware test through the engineering menu (##6484## or #64663##).

If the diagnosis confirmed a hardware malfunction, contact the service center. The average cost of repairing a communication module on Xiaomi is from 2,500 to 6000 rubles (depending on the model).

💡

Before visiting the service center, make a factory reset (Settings → Reset → Delete all data).

FAQ: Frequent questions about 4G on Xiaomi