How to check Band 20 on Xiaomi phone: all ways to check 4G-800 MHz

If your Xiaomi smartphone is not catching the network well in rural areas or underground parking lots, the problem may lie in the lack of support for Band 20 (800 MHz) – a key range for 4G coverage in remote areas. This frequency range is actively used by Russian operators (Beeline, MTS, MegaFon, Tele2) to expand coverage, but not all Xiaomi models support it. In this article, we will discuss how to determine exactly whether there is a Band 20 in your device, even if the manufacturer does not specify this in the characteristics.

It’s important to understand that range checking is not just a matter of a stable internet, but also an opportunity to save on roaming. In Europe, for example, the Band 20 is the main one for 4G, and without its support, the smartphone will only work in 3G or EDGE mode. We will look at official and hidden verification methods, including engineering menus, service codes and third-party applications, and explain why some Xiaomi models (for example, the Redmi Note 10 Pro for India) may not support this range, even if their European versions are supported.

What is the Band 20 and why is it important for Xiaomi?

Band 20 (or) LTE 800 MHz is a low-frequency band that provides broad coverage 4G At long distances and in conditions of poor passability of the signal (for example, in the forest, mountains or underground structures), in Russia it is used by operators to expand the coverage of base stations, and in Europe it is the main one for the transmission of the signal. 4G-network.

The problem with many Xiaomi smartphones (especially models for the Asian market) is that they are often devoid of Band 20 support due to differences in frequency standards. 9A India does not support this range, while the European version (Redmi) does. 9AT) — This means that when you buy a gray device, you risk being left without a stable device. 4G travelling or out-of-town.

• 📡 Benefits of Band 20: better coverage in rural areas, less power consumption, stable signal in buildings.
• ⚠️ Disadvantages: Lower speed compared to high-frequency bands (e.g. Band 3 or Band 7).
• 🌍 Where used: Russia (all operators), Europe (main range), part of Asia (limited).

If your Xiaomi isn't catching the network where other phones are showing 4G, the first reason is that there's no Band 20. But how do you check that? Let's get down to practice.

Method 1: Verify through Android settings (official method)

The easiest way to find out supported ranges is to look at network information in your smartphone settings, but this method doesn’t work on all Xiaomi models, as the manufacturer often hides detailed frequency data.

Instructions:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are several).
3. Go to Network Type or Network Settings.
4. In some models (for example, POCO X3 Pro) there will be a network range item or LTE-ranges - open it up.

If there is no such item, try an alternative path:

• 🔍 Enter the code in the dialing line: ##4636##.
• In the menu that opens, select Phone Information.
• Scroll down to the Network Type block – supported ranges can be displayed here.

⚠️ Attention: On some firmware MIUI (especially global) this code may not work or show incomplete data.

Method 2: Engineering Menu (MTK and Qualcomm)

If the standard settings didn’t show ranges, you can use the engineering menu, a hidden section for network diagnostics, which works on most Xiaomi smartphones, but you need to be careful: wrong actions can disrupt the network.

For Qualcomm (Snapdragon) processors:

1. Open the Phone app and enter the code: ##4636##.
2. Select Phone Information.
3. Scroll to the Network Type block – the current range used (e.g. LTE BAND 20) can be displayed here.

For MediaTek processors (Helio, Dimensity):

1. Enter the code ##36446337## (or #3644633## on older versions).
2. Go to Engineer Mode → Engineer Mode (MTK).
3. Select Band Mode – all supported ranges will be displayed here.

If you have a Band 20 (800 MHz) on the list, your smartphone supports it. If you don't, you're not using the hardware range.

⚠️ Warning: Do not change the settings in the engineering menu unless you are sure of their purpose! This may result in network loss or the need to reset settings.

Method 3: Applications for testing ranges (NetMonster, LTE Discovery)

If you don't want to go through the settings, you can use third-party apps that not only show you supported ranges, but also visualize the strength of the signal in real time.

Top.-3 Band-testing applications 20:

• 📊 NetMonster - shows current range used, signal strength and neighboring towers. Supports Xiaomi on Qualcomm and MediaTek.
• 🔍 LTE Discovery – Displays all supported bands, including Band 20, and allows you to manually select your preferred range.
• 📶 Network Cell Info Lite is a free version with basic network and frequency information.

How to use (in the example of NetMonster):

1. Install an app from the Play Market.
2. Open it and wait for the network to be determined.
3. Go to the Serving Cell tab and the current range (e.g. LTE 800 or Band 20) will be listed here.
4. In the Neighbors tab, you can see the available neighboring towers and their ranges.

If the list does not include Band 20, but you are sure that it should be (according to the characteristics of the model), try to force it to enable through the application settings (if such an option is available).

💡

If the app doesn't show Band 20 but you suspect it is, try manually switching the network to LTE Only mode in Android settings.Sometimes the smartphone automatically selects 3G if the 4G signal is weak.

Method 4: Phone model check (compatibility table)

If none of the above methods worked, you can find out about the support for the Band 20 model of your Xiaomi. We have collected a table of popular devices with the supported ranges. Note: the same model may have different versions for different markets (for example, the Redmi Note 11 for Europe and India).

If your model is not in the table, check its characteristics on the official Xiaomi website or on resources like GSMArena. Pay attention to the Network section - there should be listed all supported LTE-ranges.

Important: Some models (such as the Redmi Note 11 Pro+ 5G for China) can only support the Band 20 in 5G (n28) mode, but not in 4G.

Method 5: Verification through operator service codes

If you need to not only find out about Band 20 support, but also check if your Xiaomi is really connecting to this range, you can use the service service. USSD-Operator codes. They'll show you what tower and what frequency your phone is connected to.

Codes for verification (works on all operators in Russia):

• 📶 For MTS: *152# (then select Network Information»).
• 📶 For Beeline: *102# → «Network status».
• 📶 For MegaFon: *105# → «Network information».
• 📶 For Tele2: *155# → «Current network».

Once you send the code, you'll get an SMS with your current connection.

• LTE 800 or Band 20 – Your phone uses the right range.
• LTE 1800 or Band 3 – the connection is on a different frequency.
• UMTS or HSDPA – The smartphone runs in 3G, which could mean the Band 20 is not in coverage.

If the codes didn't work, try calling the operator and asking what ranges are available in your area, and it may not be the phone that's the problem, but the lack of towers with the Band 20 nearby.

💡

If the service codes show you're connected to Band 3 or Band 7, but not to Band 20, it doesn't always mean there's no support. Maybe there's just no 800 MHz coverage in your location.

What to do if the Band 20 is not supported

If your Xiaomi check shows that you don’t support Band 20, you have a few options:

• 🔄 Update your firmware: sometimes Xiaomi adds support for new ranges in updates (especially for global versions). → The phone. → Updating the system.
• 📱 Buy the outside. 4G-modem: if the smartphone does not catch the network in important places (for example, in the country), you can use USB-Band 20 modem (e.g. Huawei) E3372).
• 🔧 Try custom firmware: some informal builds (like Pixel Experience or LineageOS) can unlock hidden ranges. But it's risky.
• 📡 Use a signal repeater: if the problem is only at home, install it. 4G-repeater (signal amplifier) with support for 800 MHz.

If neither option is right, you have to accept or change your smartphone to a model with the Band 20. When choosing a new device, be sure to check its characteristics on sites like FrequencyCheck - there is a filter for supported ranges.

⚠️ Note: Some marketplace vendors (e.g. AliExpress) have Band 20 support in their specifications, but it doesn't. Always check with official sources or customer reviews!

FAQ: Frequent questions about Band 20 on Xiaomi