Xiaomi’s No LTE Phone – What It Means and How to Fix the Problem

You picked up your Xiaomi to make a phone call or go online, but instead of the usual 4G/LTE icon, the screen flaunts the words "No LTE" — and the connection only works in 3G mode or disappears. The situation is familiar? This error occurs on Redmi, POCO and Mi smartphones regardless of the year of release, but the causes and solutions can be radically different. In some cases, the fault of the software, in others — hardware malfunction, and sometimes the problem lies in the operator settings.

In this article, we will discuss all the possible causes of the emergence of “No LTE” on Xiaomi, from the banal (for example, disabled 4G mode in the settings) to the complex (damage to the modem or antenna), you will learn how to diagnose the problem yourself, which parameters to check first, and what to do if none of the standard methods did not help. And for owners of older models (Redmi Note 4X, Mi A1), we have prepared separate recommendations – these devices have their own pitfalls with support for networks.

We warn you right away, if your Xiaomi stopped catching LTE after a fall, moisture or repair, it's probably a physical injury, in which case you can't do without a service center, but in 80% of cases the problem is software, and it can be solved in 10-15 minutes, following our instructions.

What does “No LTE” mean on Xiaomi: decoding the error

The label “No LTE” (or “No Service” or “Emergency Calls Only”) signals that your smartphone cannot connect to a 4G network, but at the same time:

• 📶 SIM card is recognized (there is a signal, but only 2G/3G).
• 📱 Phone is not locked (no PIN request or message about the absence of a network).
• 🌐 The Internet can work at a low speed (via the Internet). EDGE or 3G).

It's important to understand that "No LTE" is not a diagnosis, it's a symptom, and it can occur for a dozen different reasons, from the wrong settings of the APN to damage to the radio module.

• 🔧 Software failure: after the update MIUI modem configuration flew off.
• 📡 Problems with the operator: your tariff does not support 4G, or base station temporarily disabled.
• 🛠️ Hardware defect: the antenna has moved away, the modem chip or SIM card contacts have been damaged.

To narrow down your search, answer two questions:

1. Did the problem occur after a specific action (update, drop, replace the SIM card)?
2. Does LTE work on that phone with another SIM card (like from another carrier)?

Reason 1: Disabled 4G mode in settings

The most common, but also the most common, cause is the manually disabled LTE mode, which can happen after you reset your settings, update your firmware, or even accidentally click on the menu.

1. Network type: Go to Settings → SIM-maps and mobile networks → [choose SIM] → Network type. Make sure it's selected. 4G (preferably LTE. If you should. 3G or 2G — change.
2. Flight mode: Sometimes Flight mode is activated spontaneously (e.g. due to a MIUI failure). Open the notification curtain and check if it is active. Also look at Settings → Connections → Flight mode.
3. Automatic Network Selection: In the same section SIM-maps and mobile networks, find the option "Select the network." It should stand in the position "Automatic." If it manually specifies the operator, reset the setting.

If LTE doesn't show up after you change your settings, restart your phone. Sometimes the modem takes time to reconnect.

Reason 2: Wrong APN settings

APN (Access Point Name) is the address that connects your phone to your carrier's Internet, and if it's configured incorrectly, LTE may not work even if there's a signal, especially for:

• 🆕 New SIM cards (for example, after being replaced by eSIM).
• 🔄 Phones after resetting to factory settings.
• 🌍 Devices imported from abroad (e.g., global versions of Xiaomi for Europe).

To check the APN:

1. Open the Settings. → SIM-maps and mobile networks → [choose SIM] → Access points (APN).
2. If there are several profiles, choose the one that matches your operator (for example, Internet.beeline.ru for Beeline).
3. If there are no profiles or they are incorrect, click Add and enter the data manually (see table below).

After saving the new APN, restart your phone and check if LTE has appeared. If not, delete all the extra profiles, leave only one (correct).

⚠️ Note: Some Xiaomi firmware (especially custom) settings APN If the problem comes back, check if the parameters go off after the reboot.

Reason 3: Problems with SIM card or slot

If LTE doesn’t work with just one SIM card and everything is fine with the other, the problem may be:

• 🪪 SIM card itself: physical damage, expired expiration date or blocking by the operator.
• 🔌 Slot for SIM card: oxidation of contacts, dust ingress or loose fit.
• 📱 Frequency support: Your SIM card works on frequencies that your phone doesn’t support (relevant to older Xiaomi models).

How to check:

1. Move the SIM card to another slot (if you have a two-sim Xiaomi). If LTE is working, the problem is in the first slot.
2. Try the SIM card on another phone. If there is no 4G, contact the carrier (maybe the SIM card is outdated and does not support LTE).
3. Check the SIM card contacts for scratches or contaminants, and wipe them with a smoother if necessary.

If the SIM card is fine but LTE is not showing up, try updating the operator profile:

• For MTS: send an SMS with text 1234 to 1234.
• For Beeline: dial *110*181# and follow the instructions.
• For MegaFon: send an SMS with text 1 to 0500.

Reason 4: Failure of firmware or modem

If LTE is missing after a MIUI update or a Fastboot firmware, it's because the radio module (modem) is out of order, and that's one of the most insidious reasons, because the phone looks good on the outside, but the connection isn't working properly.

Signs of software failure:

• 📵 LTE It disappears periodically (i.e., no).
• 🔄 After a reboot, the network appears, but then disappears again.
• 📡 Network settings display “unknown” operators.

How to fix it:

1. Reset network settings: Go to Settings → System → Settings Reset → Reset Wi-Fi, mobile network and Bluetooth settings. This will delete all saved networks and APNs, but will not affect personal data.
2. Update the firmware: Go to Settings → About Phone → Update the system and check for updates. If the update is available, install it.
3. Reflash the modem (for advanced users): If the reset didn't work, you can try flashing modemst1 and modemst2 through Fastboot. This will require a computer, cable and firmware for your model. Careful: the wrong actions can turn the phone into a "brick"! fastboot flash modemst1 modemst1.img fastboot flash modemst2 modemst2.img fastboot reboot

⚠️ Note: If you have never flashed Xiaomi through Fastboot, it is better not to take risks.

💡

Before resetting your network settings, record or photograph the current APN settings – after resetting, you will have to re-enter them.

Reason 5: Hardware malfunctions

If none of the above methods worked, it’s likely a hardware problem, and here are the most common malfunctions that make Xiaomi’s LTE disappear:

If you suspect a hardware malfunction, do not try to disassemble the phone yourself - without special equipment, you can only aggravate the problem. Better contact the Xiaomi service center or checked repair. The average cost of diagnosis is 500-1000 rubles, repairing the antenna or replacing the modem will cost 1500-3000 rubles.

For owners of older models (Redmi 4X, Mi A1, Redmi Note 3) there is another caveat: these phones do not support all the LTE frequencies used by Russian carriers. For example, the Redmi Note 3 Pro does not work with the B20 (800 MHz) band, which is actively used in the regions, in which case only replacing the phone with a newer model will help.

💡

If LTE is gone after a fall, moisture or self-disassembly of the phone, 99% of the problem is hardware. Don't waste time on software methods, take it to the service immediately.

Additional diagnostic methods

If you still haven’t found the cause, try these methods:

1. IMEI check: Dial *#06#. If zeros or Null are displayed instead of a 15-digit number, the IMEI is off. This can happen after a failed firmware or Hard Reset. You can restore the IMEI using an engineering menu or Maui META (root rights required).
2. Network Test in the Engineering Menu: Dial ##4636##, select Phone Information and look at Set preferred network type. If it's not LTE/WCDMA/GSM auto, change the setting.
3. Check through NetMonster: Install NetMonster (or Network Cell Info Lite) from Google Play, which will show which networks are available in your region and which database your phone is connected to. LTE-The phone doesn’t see them, but the problem is.

If none of the methods worked, but you are sure that the problem is software, you can try a complete reset of the phone (with the deletion of all data).

1. Make a backup copy of important data.
2. Go to Settings → About Phone → Resetting → Delete all data.
3. After resetting, set up the phone as new and check LTE.

⚠️ Note: On some Xiaomi models (e.g, POCO F1, Mi 9) may be released after the reset, if you do not remember the Mi Account, do not reset!

FAQ: Frequent questions about “No LTE” on Xiaomi