How many? SIM-Xiaomi Mi 10: Full configuration guide (2020)

Introduction: Why it is important to know the amount SIM-maps in Xiaomi Mi 10

Smartphone choices often boil down to tradeoffs between performance, design and functionality, and support for two key parameters for many users is becoming a key component of the choice. SIM-cards – especially for those who combine work and personal life, travel or use tariffs of different operators. Xiaomi Mi 10, released in 2020, became the flagship with the top “iron”, but its configuration of slots for the mobile phone. SIM-The maps raise questions even from experienced users.

In this article, we will analyze all the options for the Mi 10 configuration by number. SIM-From the standard two-symbol version to eSIM-enabled versions, you will learn how to install cards correctly, what limitations exist when using two operators at once, and why some users face problems when activating the second one. SIM. We will also analyze how the number of slots affects other functions of the smartphone – for example, the ability to expand memory.

If you are planning to buy Xiaomi Mi 10 or have already become its owner, but are not sure about the correct settings SIM-maps, this guide will help to avoid typical errors and make the most of the device's capabilities.

Official specifications: how many SIM-cards in the basic version of Xiaomi Mi 10

According to the manufacturer, the base model Xiaomi Mi 10 (codename umi) supports two nano-SIM-cards (format). 4FF) It's confirmed at the same time:

• 📄 Xiaomi official website (Section of technical specifications for the 2020 model).
• 📦 Documentation in the box - in the kit there is a special key for extracting the tray.
• 🔧 Service manuals, which indicate the presence of two independent radio modules for working with operators.

However, there is an important nuance here: in some regions (e.g. China) the version with a single physical slot and support for eSIM was sold. This is due to local communication standards and agreements with operators. The global version (sold in Europe, Russia, India) always uses a dual physical slot.

To determine the configuration of your device, check:

1. Marking on the box - look for Dual inscriptions SIM eSIM.
2. Phone Settings: Go to Settings → The phone. → General information and find a paragraph IMEI. If two are indicated IMEI — So, two physical systems are supported. SIM-map.

Types of supported SIM-map: nano-SIM vs eSIM

Xiaomi Mi 10 is compatible with two types SIM-The maps, but the combination depends on the modification of the device:

Important: If your Mi 10 supports eSIM, you can't use two physical cards at the same time.

• 📱 One nano-SIM + eSIM (for the Chinese version).
• 📱📱 Two nano-SIMs (for the global version).

Check your carrier’s eSIM support before buying a Chinese version. For example, in Russia, at the time of 2026, eSIM is actively offering MegaFon, Beeline and other eSIM products. Tele2, but not universally.

⚠️ Note: If you purchased the Xiaomi Mi 10 in China and plan to use it in another country, note that the eSIM may not work with local operators. SIM or replacement of firmware (which voids the warranty).

How to properly install SIM-Maps in Xiaomi Mi 10: step-by-step instructions

Incorrect installation SIM-The cards can damage the tray or contacts of the smartphone. follow this instruction to avoid problems:

Installation steps:

1. Remove the tray: Insert a clip (or a special key from the kit) into the hole on the top of the smartphone. Press until you click - the tray will extend 1-2 mm. Carefully stretch it to the end.
2. Place it. SIM-maps: Slot 1 (usually marked SIM1) — Mainstream, supportive 5G. Slot 2 (SIM2) — additional, can operate in the mode 4G/3G/2G depending on the settings, make sure the golden contacts of the cards look down.

Put the tray back in.

• Press on the tray until a characteristic click (it should stand flush with the body).
• Do not turn on the phone until you make sure that the tray is fixed.

After switching on, the smartphone will automatically identify operators if one of the SIM-maps unrecognizable:

• 🔄 Reset the device.
• 📶 Check if the operator supports operations in your area (for example, some virtual operators do not roam in your area).
• 🛠️ Clear the contacts. SIM-soft-cloth cards (without alcohol!).

⚠️ Attention: If after installation SIM-If you're on the card, you don't want to try to get the tray out when you're on! This can short-circuit. First, turn off the device, then check if you're installing it correctly.

Restrictions on the use of two SIM-maps: what you need to know

Even if the Xiaomi Mi 10 supports two. SIM-And these are the key points:

Mode of work 5G:

• 📶 Only the first. SIM-Card (slot 1) supports 5G. The second will work at maximum in 4G.
• 🔄 If you activate 5G first SIM, The second will automatically switch to 3G/4G depending on the coverage.

Simultaneous calls:

• 📞 You can only take a call to one person. SIM-If the second one gets a call, it'll be forwarded to voicemail.
• 🔀 Dual VoLTE (Simultaneous operation of two) 4G-The maps are missing in Mi 10 - one of the SIM It'll always be in mode. 3G ring-call.

Internet speed:

• 🌐 With an active internet connection on one SIM The second may experience delays in data transmission.
• 📊 If both SIM using mobile Internet, the main traffic will go through the first card.

Default settings:

• ⚙️ Default calls and SMS come first SIM. To change this, go to Settings. → SIM-maps and mobile networks → Choice SIM call-in.
• 📶 For mobile Internet, you can choose any of the SIM-cards, but not both at the same time (except for aggregation mode, which is supported by not all operators).

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If you need to switch between SIM-With maps for the Internet, use the Mobile Data widget on the home screen, which allows you to change the source of traffic to one tap without going into the settings.

Compatibility with operators: which SIM-The cards work without any problems

The Xiaomi Mi 10 supports most communication standards, but there are nuances of compatibility with operators in different countries.

In Russia and CIS:

• 🏢 «MegaFon, Beeline», Tele2, MTS – operate without restrictions 4G/5G (first SIM).
• 📡 Virtual operators (Yota, Tinkoff Mobile) may require manual input APN.
• 🚫 Some regional operators (e.g. Motiv) do not support VoLTE on the second one. SIM.

In Europe and Asia:

• 🌍 Vodafone, Orange, Deutsche Telekom – full compatibility with the 5G (if the operator provides coverage).
• 🇮🇳 In India (Jio, Airtel) may need to update the firmware to properly work VoLTE.
• 🇨🇳 In China (China Mobile, China Unicom) eSIM only works with local tariffs.

Problem cases:

• 🛑 Operators with CDMA-Networks (e.g. Verizon in the U.S.) are not supported 10 only works with GSM/WCDMA/LTE/5G.
• 🔒 Some corporate SIM-Cards (with hardware encryption) may not be defined.

If you SIM-map not recognized:

1. Make sure it is activated by the operator.
2. Check if it's blocking it. PUK-code (if the card is new).
3. Update the settings APN manually: Settings → SIM-map → [choose SIM] → Access points (APN).

Frequent problems and their solutions

Xiaomi Mi 10 users sometimes face errors when working with the user SIM-Let's look at the typical scenarios and how to fix them:

1.The phone doesn't see one of SIM-map

• 🔍 Reason: Flawed contact, damaged card or slot.
• 🛠️ Solution: Remove and re-insert SIM-Check the card on another phone. Clean the contacts of the tray with an alcohol napkin (do not use abrasives!).

2.There is no network on one of the SIM

• 📡 Reason: Lack of coverage, incorrect settings APN lock-in IMEI.
• ⚙️ Solution: Check the operator's coverage area. Update APN (See spoiler above. Make sure IMEI Not in the blacklist (checking with *#06#).

3. It's not working. 5G first SIM

• 🌐 Reason: Lack of support 5G the operator, incorrect settings or outdated firmware.
• 🔄 Solution: Update the software to the latest version MIUI. Turn it on. 5G in settings: Settings → SIM-map → [choose SIM] → Type of network → 5G. Contact the operator to check the fare (not all include) 5G default).

4. You can't call with the second one. SIM Active Internet on the first

• 📞 Reason: Modem architecture restriction (one active connection for voice/data).
• 🔀 Solution: Turn off mobile internet on the first SIM Use Wi-Fi for the Internet while you're talking.

⚠️ Note: If, after all the manipulations, one of the SIM-The cards are still not working, this may indicate a hardware malfunction (damage to the antenna module or controller). SIM). In this case, contact the service center. Self-repair without experience can lead to complete loss of communication!

FAQ: Answers to popular questions

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Xiaomi Mi 10 in the global version supports two physical nano-SIM, but with restrictions on the use of the new model. 5G The Chinese version can have an eSIM, which requires clarification before buying. Always check the configuration of the slots and compatibility with your operators!