Xiaomi Mi 10 has become a landmark device for the company, marking the transition to a premium segment with support for fifth-generation networks. One of the key issues that arises for potential buyers and new owners of this flagship is the organization of work with mobile communication. In an environment where users often share work and personal contacts or roaming, the ability to use two numbers becomes a critical feature.
Many are confused about the specifications of different versions, as the market is saturated with versions for different regions. It is important to note that the standard global version of the device is equipped with a hybrid tray that allows you to use two physical Nano-SIM cards simultaneously, this solution provides full functionality of the Dual SIM Standby, allowing you to take calls to both numbers without the need for constant switching.
However, having two slots is only half the battle. Proper setup, understanding Qualcomm modem and the features of the MIUI (or HyperOS) shell require detailed consideration. In this article, we will discuss the technical nuances, installation methods and typical problems that can be encountered when using two SIM cards on this device.
Technical characteristics of the tray and types of SIM
The flagship smartphone Xiaomi Mi 10 is equipped with a tray of combined type. This means that physically in the device there is space for two Nano-SIM cards (4FF). The tray is removed using a special clip included in the kit and is located on the lower end of the case between the microphone and the USB Type-C connector. The tray design is made with high tightness standards, which corresponds to the IP53 protection class.
It’s worth considering that supporting two physical cards doesn’t mean you can work with a memory card at the same time. Unlike some budget models, there’s no separate microSD slot. If you’re planning to expand storage with a flash card, you’ll have to choose between two SIM cards or one SIM card plus a drive. However, given the base 128GB or 256GB of internal memory, many users are turning down expansion cards in favor of a second number.
The size of the cards must strictly comply with the Nano-SIM standard. The use of adapters or cards of old formats (Mini or Micro) is strictly prohibited, as this can lead to jamming of the mechanism or damage to the contacts inside the smartphone. Modern telecom operators issue cards immediately in the desired format or provide tools for self-extracting the desired size from the combined workpiece.
Can I use eSIM on Xiaomi Mi 10?
Installation process SIM-card
The procedure for installing cards in Xiaomi Mi 10 requires accuracy, but is not very complicated. Before the manipulation is recommended to completely turn off the smartphone, although the modern Android operating system supports hot connection. However, to ensure the recognition of both numbers and correct registration in the network, it is better to install the installation with the power turned off.
To extract the tray, you need to find a small hole next to the tray frame on the bottom end. Use a complete metal clip or similar thin object. Press perpendicular to the body until the characteristic click, after which the tray will slightly extend. Pull it out completely and inspect the marking that indicates which slot corresponds to the first and which corresponds to the second number.
☑️ Proper installation SIM-map
After the smartphone is turned on, the system will automatically detect the presence of new modules. SIM-If this does not happen, check the correct position of the chip: the contacts must be directed downwards, and the cut corner of the card must match the shape of the tray. Incorrect installation can lead to read error or damage to the contacts.
⚠️ Warning: Don't try to force the tray into the smartphone. If it doesn't come in smoothly, you've inserted it with the wrong side.
Dual SIM setup in MIUI interface
Once the device is physically installed and turned on successfully, the user needs to prioritize the use of the cards. The MIUI shell provides flexible tools for managing two numbers. The initial setup usually occurs automatically on the first run, but manual adjustment allows you to optimize communication costs.
To access the settings, go to the Settings menu, then select the item SIM-So you can actually map and mobile networks, and you can actually map both of these maps that you have installed, and you can switch them off completely, software-based, without physically removing them, which is convenient in areas where they're not receiving well or to save battery power.
The key is the distribution of roles, and the system allows you to assign one card to the mobile Internet, and another card to voice calls and other cards to the Internet. SMS. The "Smart" function is also available. SIM-A card that automatically switches the internet to a better-coated card if the current network loses signal, although this feature may consume additional battery life.
Special attention should be paid to setting the names of networks. To avoid confusion, rename the SIM cards according to their purpose, for example, "Work" and "Personal", this name will appear in the notification curtain and when selecting a number for an outgoing call, which greatly simplifies navigation in everyday use.
Network modes and operator choice
The Xiaomi Mi 10 is based on the Snapdragon 865 processor, which is powered by the Snapdragon X55 modem, which supports a wide range of frequencies and communication standards, including 5G, although in some regions the fifth generation functionality may be limited software or absent due to the lack of operator infrastructure.
In the mobile network settings, you can choose the preferred network type for each SIM card. Options are available: only 2G, 3G/2G, 4G/3G/2G (auto) and 5G/4G/3G/2G (auto). For most users, the optimal choice is an automatic mode that provides a balance between data speed and power consumption.
Using two active SIM-cards in standby mode (Dual) SIM Dual Standby) when one card is busy talking, the second card remains available for incoming calls, but cannot transmit data at the same time unless VoLTE is enabled or if the second card does not support simultaneous voice and data on your network. In some cases, when an active conversation on the first card, the second card may temporarily switch to mode. 2G or become inaccessible.
| Parameter | Slot 1 | Slot 2 | Limitations |
|---|---|---|---|
| Type of card | Nano-SIM | Nano-SIM | Only one active microSD slot (hybrid) |
| Support for 5G support | Yes (depends on region) | Yes (depends on region) | 5G on only one card at a time |
| VoLTE / ViLTE | Supported | Supported | Support from the operator is required |
| Max, LTE speed. | Up to 1 Gbps (aggregation) | Up to 1 Gbps (aggregation) | Depends on the network conditions |
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When you are actively talking on a regular network (not VoLTE) SIM-card, the second may temporarily lose communication with the network or go into mode 2G.
Definition problems and their solution
Despite the high reliability of the Xiaomi Mi 10, users may face a situation where the smartphone stops seeing one of the SIM cards. SIM-Often the cause lies in a software failure or oxidation of contacts, especially if the device was operated in high humidity conditions.
The first step in diagnosis is to program reset network settings. Go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. This operation will not delete your personal data, but will return network settings to factory values, which often solves the problem of access profile conflicts.
If the software method didn't work, you need to check the physical condition of the contacts. Wipe the SIM chip with a soft dry cloth. Also try to install the cards in another phone to rule out their malfunction. In rare cases, the problem may lie in the tray itself, which could deform when falling.
⚠️ Warning: Do not use alcohol or other aggressive liquids to clean your contacts SIM-This can wash away the protective coating and lead to corrosion.
The Impact of Two SIMs on Autonomy and Performance
Using two active SIM cards inevitably affects the power consumption of a smartphone. Modem has to maintain registration on two networks at the same time, track paging messages from two different base stations and switch between them. On the Xiaomi Mi 10 with its 4,780 mAh battery, this effect is noticeable, but not critical.
In low signal conditions, battery consumption can increase significantly. If you are in an area where one of the networks catches extremely poorly, the smartphone will constantly increase the transmitter power to maintain communication, which will lead to heating of the case and rapid discharge. In such situations, it is advisable to temporarily turn off the second SIM card through settings.
In terms of performance, modern processors are effective at handling the background tasks of the modem. However, when using navigation or heavy online games with active data exchange over the mobile network, switching between SIM cards can cause micro-lags in the transmission of data packets.
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For maximum autonomy when using two SIMs, turn off the 5G Network Search feature if there is no reliable coverage in your region, or set 4G/LTE priority for both cards.