Xiaomi Poco X3 Pro: how much? SIM-cards and slot features

Choosing a modern smartphone often starts with an assessment of its communication capabilities, and the Poco X3 Pro is no exception, becoming one of the most popular mid-range devices. Many potential buyers are wondering how many Sim cards the Xiaomi Poco X3 Pro supports, as for some users, having two active numbers is a critical requirement for separating work and personal calls.

In this article, we will discuss in detail the architecture of the tray, the formats of supported chips and the nuances of working in Dual SIM mode. You will learn whether it is possible to use two SIM cards and a memory card at the same time, as well as what communication standards are available for each slot.

Understanding these technical details will help avoid errors in the purchase and configuration of the device, ensuring maximum efficiency of the mobile network.

Technical characteristics of the slot for SIM-cards

Xiaomi Poco X3 Pro is equipped with a combined tray that supports the installation of two Nano-SIM SIM cards. This is the most common standard to date, characterized by compact dimensions, which allows manufacturers to save internal body space for a more capacious battery or improved cooling system.

Both slots support 4G (LTE) networks, but it is important to understand the principle of their simultaneous operation. Both cards are active in standby mode, but when establishing a voice connection or data transfer, one of them switches to 2G/3G mode if VoLTE is not used.

The key feature is support for Dual SIM Dual Standby (DSDS), which means that you can receive calls to both numbers simultaneously, but if you are talking on the first line, the second line will not be available for incoming calls, and the subscriber will hear a busy signal or get to the answering machine, depending on the operator's settings.

⚠️ Note: Do not try to insert a micro slot-SIM regular SIM-A card even trimmed with scissors.The wrong thickness or size can damage the contact pins inside the tray, resulting in costly repairs.

It is also worth noting that the software MIUI, POCO is based on X3 Pro, which allows you to flexibly set network priorities, you can choose which SIM card will be used for mobile Internet by default, and which is exclusively for voice communication and the Internet. SMS-message.

Support for memory cards and combined tray

One of the most important issues for multimedia users is the possibility of expanding the built-in storage. The Poco X3 Pro features a combined slot, which imposes certain restrictions on the configuration of installed modules. You can not use two SIM cards and a microSD memory card at the same time.

If you need the maximum amount of storage to store photos, videos and games, you will have to donate one of the SIM cards, in which case a microSD card of up to 1 TB is installed in the second slot, which allows you to significantly expand the capabilities of the device without buying a more expensive version with a large amount of internal memory.

The process of switching between slot modes is physically simple: you simply change the location of the chips in the tray. However, the software system only recognizes changes after rebooting or retrieving / inserting the tray when the device is on (although hot replacement is not recommended).

For users who are critically important to two active links, modern flagship manufacturers often offer separate slots, but in the segment where the Poco X3 Pro is positioned, the combined variant is the standard for optimizing production coûts.

Instructions: How to properly install SIM-map

The process of installing a SIM card in Xiaomi Poco X3 Pro does not require special skills, but requires accuracy and adherence to a certain algorithm of actions. First, you need to locate the hole to extract the tray, which is located on the bottom end of the device, to the left of the USB Type-C port.

Use a special paper clip that comes with the kit, or a thin needle to press the hole. The tray will extend out, and then it can be removed with your fingers. Notice the circuit that is struck on the tray itself, which shows the correct location of the chips.

Put the Nano-SIM card in the appropriate slot with golden contacts down. The beveled corner of the card should coincide with the beveled angle in the tray. Do not use force if the card does not enter - better double-check orientation.

Once installed, carefully insert the tray back into the case until the characteristic click. Turn on the device and wait for the network icons to appear. If the SIM card is undecided, check if it is installed correctly, or try to wipe the contacts with a soft eraser.

Setting up two SIM-card MIUI

After the modules are physically installed, the system will suggest configuring their use. MIUI Provides easy access to SIM card management via the settings menu. Go to Settings, then select SIM-maps and mobile networks.

Here you will see a list of installed cards with the ability to assign them names (for example, "Work", "Home") and choose a color for visual differences in the interface, which is especially useful when you need to quickly understand which card is coming from a call or message.

The same menu also configures data settings, so you can assign one of the default cards to use the mobile Internet, and you can also use "Use mobile data for calls," which allows you to make calls over the Internet if the voice network is not available.

Importantly, when using mobile internet on one card, the second card can temporarily switch to 2G mode, which can affect the quality of reception in areas of uncertain signal.

Problems with SIM definition and their solution

Sometimes users are faced with a situation where Poco X3 Pro stops seeing the SIM card. This can show up in a message saying, "No." SIM-"cards" or a constant search for the network. Often the cause is oxidation of contacts or a software failure of the communication module.

The first step should be to retrieve and re-install the SIM card. Make sure the golden contacts are clean and scratch-free. If the problem persists, try placing the card in another slot - this will help identify the malfunction of the particular connector.

⚠️ Warning: If the phone fell or was exposed to moisture, the problem with SIM This could be due to damage to the antenna plume or the module itself, in which case self-repair could make things worse.

Software resetting network settings also often helps solve the problem. Go to Settings → About Phone → Settings Reset → Reset your Wi-Fi, mobile networks and Bluetooth settings. This action will return network settings to factory values without deleting personal data.

Frequent questions and additional opportunities

Many people are wondering if Poco X3 Pro can be used in roaming with two cards from different countries. Yes, it is possible, but the data roaming settings should be activated separately for each SIM card in the mobile menu. Be careful of your operator's rates.

Also worth mentioning is the SIM card switching feature for calls. In the Phone app, when dialing, you can always choose which card to make a call from by simply clicking on the SIM card icon under the number input field.

💡

Use the SIM Switch widget on the home screen to quickly activate and deactivate slots without entering the deep menu settings. This is convenient when you need to temporarily turn off the second line.

For gamers who make up a significant portion of Poco’s audience, it’s important to know that active dual-SIM mode can slightly increase power consumption in standby mode. If you’re in a low-reception zone, the phone will spend more energy searching for both networks’ signals.

💡

The optimal configuration for most users is one SIM card with unlimited Internet and the second for voice communication, which provides a balance between functionality and autonomy.

Conclusion and final recommendations

To sum up, the Xiaomi Poco X3 Pro offers a standard set of communication capabilities for its class. Support for two Nano-SIM cards allows you to flexibly manage communication, although the presence of a combined slot makes you choose between a second SIM card and a memory extension.

Proper network prioritization and the use of modern technologies such as VoLTE allow you to minimize the inconvenience of working in Dual SIM mode.

When buying, pay attention to the smartphone version (Global or CN), as the Chinese versions may lack some of the communication frequencies used in Europe and the CIS, which directly affects the quality of 4G networks.