How to choose the right way SIM-Xiaomi Call Card: From Nano-SIM to eSIM

Choice SIM-Xiaomi’s smartphone cards seem like a simple task — until you face problems like a lack of network, a bad signal or the inability to make a call. The fact is that modern Xiaomi devices (from the budget Redmi to the flagship Xiaomi 14) support different formats. SIM, Communication technologies (including VoLTE and VoNR) and have nuances with network settings. SIM-Choose a card for your Xiaomi, how to install and configure it correctly so that calls work without failure.

We analyzed the technical characteristics of more than 50 Xiaomi models (2018-2026), studied user reviews about problems with the new model. SIM-And we did this with maps and we interviewed mobile operators, and we ended up with a step-by-step guide that takes into account the data:

• 📱 Formats SIM-cards (nano-SIM, eSIM, hybrid slots) and their compatibility with specific models of Xiaomi.
• 📡 Voice technologies (2G, 4G VoLTE, 5G VoNR – What supports your phone and what carriers offer.
• ⚙️ Network settings that often get lost after an update MIUI shift SIM-map.
• ⚠️ Common Mistakes That Make Xiaomi Not Seen SIM-card or can't ring.

Particular attention will be paid to Xiaomi models with hybrid slots (for example, Redmi Note 12 Pro).+), Where to choose between the second SIM-microSD card and memory card – here a choice error can cost data loss or the inability to use two SIMs at the same time.

1. What format SIM-The cards are suitable for your Xiaomi

The first thing you have to do when buying a new one. SIM-Since 2016, most Xiaomi smartphones have used nano-SIM (4FF), but there are nuances:

• 📱 Standard models (Redmi) 10, POCO X5, Xiaomi 13 Lite - nano-SIM only (12.3 × 8.8 mm).
• 🔄 Hybrid Slots (Redmi Note 11 Pro, POCO F5) — You can insert either a second nano-SIM or microSD (but not at the same time!).
• 🌐 Models with eSIM (Xiaomi) 13/14, POCO F4 GT) — support virtual SIM + physical nano-SIM.

If you're buying SIM-card in the operator's cabin, check that you need nano-SIM. Many operators issue combined cards (3-in-1), However, for models with eSIM (for example, Xiaomi 14 Ultra) physical SIM You may not need to download the operator profile.

Attention, if Xiaomi can't see SIM-map after installation, check:

⚠️ Note: On models with hybrid slots (for example, POCO M5) When installing a microSD second SIM-The card automatically turns off. To return both SIMs, remove the memory card.

2. What communication technology does your Xiaomi support: 2G, 4G VoLTE or 5G VoNR

From format. SIM-The card depends on its physical compatibility, and the communication technology depends on the quality of calls:

• 📞 2G (GSM) — It is an outdated standard, but some operators (such as Tele2) still use it for voice communication in the outback.
• 📶 4G VoLTE – Voice communication through LTE (quality like messengers. Necessary for Xiaomi 2020 models+ year-end.
• 🚀 5G VoNR – Voice calls through the 5G (It is only available on Xiaomi flagships. 13/14 and large cities).

The problem is that not all operators support VoLTE/VoNR For example, all the rates:

• 🔴 MTS and Beeline include VoLTE by default on most tariffs.
• 🟡 MegaFon requires the connection of the option "Voice through" 4G" (free-for-free).
• 🟢 Tele2 and Yota support VoLTE only on new tariffs (2023)+ year-end).

To check if VoLTE works on your Xiaomi:

1. Go to Settings → SIM- Cards and Mobile Networks → [select SIM] → Enable VoLTE].
2. If you don’t have an option, your model or operator doesn’t support the technology.
3. When you call, look at the network indicator: if it shows 4G or 5G (not 3G/H+) — VoLTE is working.

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After the update MIUI lost VoLTE, reset network settings: Settings → SIM-map → Resetting mobile network settings. This often solves the problem without going to the service.

3. Which operator is better for Xiaomi: a comparison of coverage and tariffs

The choice of operator affects not only the cost of calls, but also the quality of communication. 2026 year, best cover 4G/5G Russia provides:

For Xiaomi with support 5G (Xiaomi 12/13/14, POCO F4/F5) It makes sense to choose MTS or MegaFon, which has the broadest fifth-generation coverage.2 They offer the cheapest rates, but without 5G and with a weaker signal in the subway / subway.

On Xiaomi models with MediaTek (e.g. Redmi) 10A, POCO M5) There may be problems switching between 4G and 3G. In this case:

⚠️ Note: Manually set your preferred network type: Settings → SIM-map → Preferred type of network → Only 4G (This will prevent calls from breaking when switching standards.

4. Step-by-step instructions: how to install and activate SIM-map

Even if you've changed a lot. SIM-map, Xiaomi may have nuances. Follow this instruction to avoid errors:

Turn off your phone (required!)

Use a paper clip from the kit to extract the tray

Check the correct orientation SIM (skew)

Set the tray before the click.

Turn on the phone and wait for the activation of the network (up to 2 minutes)-->

After installation SIM-Xiaomi cards give an error "No service" or "SIM-The card is not supported, follow the following steps:

1. Reboot the phone.
2. Check if Automatic Network Selection is enabled in Settings → SIM-map → [yours SIM] → Choice of network.
3. If SIM new – make sure it is activated (sometimes you need to call *111# or wait up to 24 hours).
4. In the models with MIUI 14+ Try resetting your network settings: Settings → Memory. → Resetting settings → Resetting mobile network settings.

For eSIM models (e.g. Xiaomi 13):

1. Get it. QR-activation code or data from the operator.
2. Go to Settings. → SIM-map → Add a mobile network.
3. Scan the QR or enter the data manually.
4. Confirm activation (reboot may be required).

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Xiaomi with eSIM cannot use two SIM-The system will block the second SIM with the error "Incompatible network".

5. Typical problems with SIM-Xiaomi maps and their solutions

Even after the correct installation SIM-Xiaomi owners face mistakes. Let's look at the most common and ways to fix them:

Problems are often encountered after the update. MIUI. For example, in MIUI 14 A bug has appeared that caused some models (Redmi Note 11, POCO X4) They lose the network after they go into airplane mode:

⚠️ Warning: If the network is not restored after leaving the aircraft mode, go to Settings → SIM-map → [yours SIM] → Turn on and off/on the SIM manually.

For models with MediaTek Helio G (e.g. Redmi) 9A) It's a problem with the subway network being lost, and it's a problem with a weak communication module:

• Install in the network settings "Only" 3G" (subway 3G often works more stable 4G).
• Use the Network Signal Guru app (available on Google Play) to force you to connect to the nearest tower.

6. How to set up two SIM-Xiaomi maps: priorities and switching

If your Xiaomi supports two of your SIM-It's important to set up the interactions correctly. MIUI Offers the following options:

• 📞 Calls: You can choose which one SIM Call by default or ask every time.
• 🌐 Mobile Internet: Use One Mobile Internet SIM The second is for the data and the second is for the call.
• 📩 SMS: similar to the call, the choice of the main SIM message-board.

To set priorities:

1. Go to Settings. → SIM-map.
2. Select "Double settings" SIM" (The name may vary depending on the version. MIUI).
3. Set "always ask" for calls if you want to choose. SIM every call.
4. For mobile Internet, choose the main one. SIM (Or turn off the data on the second to save traffic).

Important nuance: on some models (Redmi Note 10 Pro, POCO X3 Pro) with an active Internet on one SIM The second one may not be available for calls. It's a hardware limitation (the communication module does not support calls). DSDS — Dual SIM Dual Standby:

• Turn off the mobile Internet on the main SIM before the big call.
• Use Wi-Fi for the internet if you need to be in touch on both SIMs.

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To quickly switch between SIM-cards during the call, add a widget "SIM-maps on the main screen: press your finger in the free screen space → "Widgets" → find "SIM-map".

7. eSIM on Xiaomi: How to activate and use

Virtual. SIM-The eSIM cards are becoming more popular, and Xiaomi has been supporting them on flagship models since the Xiaomi 12:

• 🔄 Cannot be lost or damaged (no physical chip).
• 🌍 Easy to travel – you can connect a local operator without buying a physical SIM.
• ⚡ Quick activation through QR-code.

However, there are limitations:

• ❌ Not all Russian operators support eSIM (for 2026 – only MTS, Beeline and MegaFon for corporate clients).
• ❌ Xiaomi cannot use two eSIMs at the same time – only one eSIM + one physical nano-SIM.
• ❌ Transferring eSIM to another phone requires operator to reactivate.

Instructions for activating eSIM on Xiaomi 13/14:

1. Get it from the operator. QR-manual (ICCID, activation).
2. Go to Settings. → SIM-maps and mobile networks → Add a mobile network.
3. Select "Use eSIM" and scan. QR or enter data.
4. Confirm activation (may be required) SMS coded).
5. Reboot the phone.

If the eSIM is not activated, the network will not appear:

⚠️ Note: Make sure that the settings are APN The correct operator profile is indicated. APN Internet.mts.ru, for Beeline - Internet.beeline.ru APN Not available, ask for it from the operator.

FAQ: Frequent questions about SIM-maps on Xiaomi