How to choose the right way SIM-Xiaomi Smartphone Call Map: A Complete Guide to 2026

Choice SIM-Xiaomi’s smartphone card seems like a simple task – until you face problems like lack of network, poor call quality or format incompatibility, especially for owners of new models (for example, Xiaomi 14 Ultra or Redmi Note 13 Pro).+), wherein SIM-In this article, we will discuss all the criteria for choosing from the physical format to the operator’s tariffs, and also tell you how to set up the right setup. SIM-post-installation card to avoid typical errors.

Many users mistakenly believe that any SIM-The map will fit their Xiaomi, but in practice it's not, POCO F6 Pro) not supported 3G slot-in SIM-And the old Micro-SIMs may not fit physically into today's smartphones, and the choice of operator affects not only the cost of calls, but also the quality of communication in your region. We analyzed the current offerings of 2026 and tested compatibility with popular Xiaomi models to give clear recommendations.

If you have just bought a smartphone or are planning to change carriers, this article will help you avoid common mistakes. MIUI, which allow for optimizing work SIM-Call cards – they are not found in standard instructions.

1. Formats SIM-Maps: Which is the right one for your Xiaomi

The first thing that the user encounters is the physical format. SIM-Modern Xiaomi smartphones support three main types:

• 📱 Nano-SIM (4FF) — standard for all models produced after 2016 year, including Xiaomi 13T, Redmi 12). Size: 12.3 × 8.8 mm.
• 🔄 eSIM - virtual SIM-Available in flagships (Xiaomi 14, Mix Fold 3) and some models for the global market.
• ⚠️ Micro-SIM (3FF) — Outdated format, suitable only for older models (Redmi) 3S, Mi 4i). New smartphones are not used in the new.

To find out what format you need, check the specifications of your model on the official Xiaomi website or look in the instructions section "Slot for the device". SIM-maps." For example, in POCO X6 Pro is equipped with a hybrid slot: either two Nano-SIMs or one Nano-SIM + MicroSD.

If you are buying a smartphone in China (such as the Xiaomi Civi 4), note that many models for this market do not support eSIM and may have restrictions on working with two physical devices. SIM-Check this information with the seller before buying.

⚠️ Note: If you cut the Micro-SIM to Nano-SIM yourself, you risk damaging the chip. Better ask for a replacement from the operator - it's free in most communication salons.

Compatibility with operators: which to choose for calls

Not all operators work equally well with Xiaomi, especially when it comes to communication quality or support of modern standards (for example, VoLTE or VoNR for 5G calls). In 2026, four operators lead in Russia and the CIS:

• 📶 MTS – the best coverage in the regions, supports VoLTE on most Xiaomi models (except the oldest ones).
• 💬 Tele2 – Budget Fees, but There May Be Problems 4G+ In some models (e.g. Redmi). 10A).
• 🌐 Beeline is stable with Xiaomi, but coverage is worse in remote areas.
• 🚀 MegaFon is the best choice for 5G-Calls (if your Xiaomi supports VoNR).

To check compatibility, go to Settings → SIM-maps and mobile networks → [choose SIM] → Network type: If there is a VoLTE on the list, or 5G, Your smartphone supports modern call standards. If it doesn't, it'll be over the old one. 3G, quality-deteriorating.

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Before the purchase SIM-For example, in Moscow and St. Petersburg, all operators work equally well, and in Siberia MTS leads the way.

Pay special attention to the rates for calls, for example:

• 📞 MTS “All for communication” – unlimited calls in Russia + 100 minutes for rooms in other countries.
• 🌍 Tele2 “My Talk” – cheap calls, but limited Internet (suitable if you call a lot, and use the Internet over Wi-Fi).
• 💎 MegaFon "All inclusive" - premium tariff with 5G and priority network for calls.

⚠️ Note: Some carriers (e.g. Yota or virtual carriers like Tinkoff Mobile) may not support VoLTE on Xiaomi!

3.Tune in. SIM-maps after installation: step-by-step instructions

Install SIM-Xiaomi's map isn't enough -- you need to configure it properly so that calls work smoothly:

1. Put it in. SIM-card to slot (for eSIM download the operator profile through Settings) → SIM-map → Add eSIM).
2. Reboot your smartphone (required!).
3. Go to Settings. → SIM-maps and mobile networks.
4. Choose yours. SIM-map and activate options: 📶 Mobile data (if necessary) 📞 Calls on 4G (VoLTE) 🔄 Roaming (if travelling)

Type of network

4G/5G

If the calls do not work after setting up, follow the following steps:

1. Check if the In-plane mode is enabled (Settings → Connections → Flight mode).
2. Update the operator settings: Settings → SIM-map → [yours SIM] → Update settings.
3. Reset network settings (Settings → About Phone → Resetting → Network settings reset).

Network optimization is available for models with MIUI 14 and later: go to Settings → Special features → Network optimization and turn it on. This improves call stability in low signal conditions.

4. Two. SIM-Cards vs. One: Which is Best for Calling

Many Xiaomi models support two physical models. SIM-cards or one physical + But should we use both? Let's look at the pros and cons:

If you travel frequently, two SIM-cards can be useful: one for local calls, another for roaming. However, note that in some models (for example, Xiaomi). 12T) second-second SIM-The card only works in 2G/3G, which impairs the quality of communication.

For maximum quality of calls, we recommend:

• 🔋 Use one. SIM-card unless two numbers are needed.
• 📶 If you need two. SIM, Choose the main one (with VoLTE) for calls, and the second one for the Internet.
• 🔄 In the settings (SIM-map → Network priority set for the main SIM 4G/5G, and — 3G (if the quality of the communication is uncritical).

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On models with Snapdragon 8 Gen 2/3 (for example, Xiaomi 13 Ultra, both SIM-cards can work in 4G simultaneously 5G It will be available only in the main.

5. Communication problems on Xiaomi: how to fix

Even after the right setup SIM-So, if you look at the maps, you might have communication problems:

• 📵 No network: Check if data transmission is enabled for this SIM (Settings → SIM-map → Update the operator profile (same settings) If nothing helps, try resetting the network settings.
• 🎤 The interviewer can't hear you: Turn on VoLTE (if supported). Check if the microphone is covered with a case. Clean the microphone hole from dust (use a toothpick).
• 🔊 Poor quality of communication (noise, cliffs): Turn off Wi-Fi Calling (Settings) → SIM-map → Wi-Fi calls) if the mobile signal is weak. Try changing the network type from the mobile network. 4G on 3G (Sometimes more stable. If there's only one problem. SIM, Check it on another phone, it may be the operator.

If problems persist, try updating the firmware (Settings) → The phone. → System updates in new versions MIUI Frequently fix work-related bugs SIM-For example, in the MIUI 14.0.5 was fixed error with the loss of the network on the Redmi Note 12 when using two SIM.

⚠️ Warning: If you lose your calls after the update, reset your network settings. In rare cases, a rollback to the previous version helps. MIUI (But it's risky - you can lose your data!).

To diagnose the problem, use the engineering menu:

1. Please type in the phone keyboard ##4636##.
2. Select Phone Information.
3. Check Service State status – if Out of Service is there, the problem is on the operator’s side.

6. eSIM on Xiaomi: How to activate and use

Virtual SIM-The eSIM is becoming more popular, especially in Xiaomi’s flagship models, which allows you to activate the fare without a physical card, which is convenient for traveling or using the second number.

List of Xiaomi models with eSIM support (2026):

• 📱 Xiaomi 14 / 14 Pro / 14 Ultra
• 📱 Xiaomi 13 / 13 Pro (Global versions only)
• 📱 Xiaomi Mix Fold 2 / Mix Fold 3
• 📱 POCO F5 Pro

To activate the eSIM:

1. Get it. QR-code or activation code from the operator (for example, MTS or MegaFon).
2. Go to Settings. → SIM-maps and mobile networks → Add eSIM.
3. Scan it. QR-code or enter the code manually.
4. Wait a few minutes – the profile will load automatically.
5. Reboot your smartphone.

The advantages of eSIM:

• ✅ No risk of damaging the physical card.
• ✅ Quick change of operator (just download a new profile).
• ✅ Two lines can be used (physical lines). SIM + eSIM).

Disadvantages:

• ❌ Not all operators support eSIM (e.g. Tele2 only tests the technology).
• ❌ When resetting the phone to factory settings, the eSIM can be deactivated.
• ❌ You can’t transfer it to another phone (you’ll have to download the profile again).

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Before buying a smartphone with eSIM, check with the operator whether it supports this technology. For example, in Beeline, eSIM is available only for corporate customers.

7. How to save on calls: tariffs and life hacks

Calls can eat up a significant portion of your budget, especially if you make frequent calls on your mobile or overseas.

• 💰 Tariffs with unlimited calls: MTS "All for communication" - 500 rubles / month (calls in Russia are unlimited). Tele2 "My conversation" - 350 rubles / month (500 minutes) + MegaFon "All inclusive" - 900 rubles / month (unlimited for all operators) + 5G).
• 🌍 International calls: Use Skype, WhatsApp or Telegram for calls over Wi-Fi. Buy a package of minutes from the operator (for example, from MTS “Calls abroad” for 200 rubles / month).
• 🔄 Roaming: Turn on the option “Like at home” at MegaFon or MTS (calls at home rates at 60)+ Buy local countries. SIM-card (e.g. Turkcell offers low-cost packages in Turkey).

For Xiaomi owners, there are hidden saving chips:

• In Settings → SIM-cards → Wi-Fi call turn on Wi-Fi Calling. Calls will go over the Internet, saving minutes of tariff (works with MTS, MegaFon, Beeline).
• Use Traffic Saving mode (Settings → Connections → Traffic Saving) to limit background internet consumption during calls.
• Set up automatic network selection (Settings) → SIM-map → Type of network → Auto, so that the smartphone always connects to the most economical standard (for example, 3G instead 4G, if the speed is not critical).

If you make frequent calls to landlines, check out rates with free minutes for city numbers (e.g., Beeline’s Home Region) and check if your carrier has promotions (e.g. Tele2’s Call Friends Free).

8. Frequent questions about SIM-maps on Xiaomi