How to insert a SIM card in Xiaomi: a step-by-step guide

Installing the communication module is the first and most critical step after unpacking a new smartphone. Many users face difficulties already at this stage, as the design of the trays in Xiaomi, Redmi and Poco devices can vary significantly depending on the year of release and the price segment of the model. Installation of the chip can lead to the fact that the device does not see the network or, in the worst case, damage the contact group.

In this article, we will discuss all the nuances of the procedure, from finding a hole to extract and ending with the software setting of network priority, you will learn why in some models it is impossible to use two SIM cards and a memory card at the same time, and how to correctly orient the chip so as not to break it when inserted.

Before you start physically affecting the case, make sure you understand the type of tray your device is in. The Chinese giant’s modern smartphones often feature hybrid slots that require special attention when mounting. Ignoring these features can lead to mechanical damage that is not warranty repairable.

Tool preparation and tray inspection

You'll need a special key-clip to start the procedure, which always comes with your phone. If the original tool is lost, you can use a thin needle or a straightened stationery clip, but you need to be extremely careful not to damage the push mechanism.

Take a close look at the end of the smartphone. In most modern Xiaomi models, the tray for the smartphone is designed for the user. SIM-the card is located on the lower edge, left or right of the charging port USB Type-C. In some older or specific models, the slot may be on the top edge. Find a small circular hole next to the elongated tray.

⚠️ Warning: Make sure you insert the instrument into the hole of the push mechanism, rather than into the microphone hole, which is often located nearby.

After you remove the tray, carefully examine the shape of the tray. There's usually a schematic image on the end of the tray showing how the map should lie. SIM-The card should match perfectly with the notch on the tray, so if the chip is not tight or protrudes beyond the edges, insert it into the phone is absolutely forbidden.

Differences between standard and hybrid slots

Understanding the type of slot is key for owners of budget and mid-budget devices. Xiaomi’s flagship models often use independent slots, where the space for two SIM cards and microSD cards are separated, which allows the user to choose not between an additional number and a memory extension.

However, the Redmi Note and Poco series M/X And hybrid trays are common, and in this design, second place is universal: you can put it in there or you can put it in the second place. SIM-It's a card or a memory card, but not at the same time, and it's done to save the interior space of the case and reduce the cost of the device.

• 📱 Independent slot: three separate seats, 2 can be used SIM + SD.
• 🔄 Hybrid slot: two places where the second is occupied SIM-2, microSD.
• 🚫 Lack of slot: In some ultra-thin models, the memory card slot may be missing completely, leaving only space for SIM cards.

If you plan to use a memory card and you have a hybrid slot, you will have to sacrifice a second SIM, in which case it would be more logical to transfer the main number to eSIM (if the model supports), freeing up the physical slot for the drive. Checking the type of slot takes seconds, but saves you from frustration when trying to shove the extra card.

Step-by-step installation instructions SIM-map

The installation process requires precision and good lighting, so take the extracted tray and put it on a flat surface. SIM-The map is directed down to the contacts of the tray, unless otherwise indicated by the diagram on the tray itself. Most often in Xiaomi smartphones, the chip is placed down contacts.

Combine the cut-out angle of the plastic with the appropriate groove in the tray. The card should lie in its nest perfectly smoothly, without gaps and edge protrusion. If the Nano-SIM card is dangling in the Micro-SIM slot, be sure to use an adapter, but make sure the adapter is not too thick and stuck when inserted.

Put the tray in the phone only with the side that was facing outward when you extract it. You don't have to flip it or try to push it with the other face. The movement should be smooth; if you feel resistance, stop and check the orientation. The tray should enter before the characteristic click or just rest on the body, becoming level with the edge.

Network setting and choice of mode of operation

After physical installation and activation of the device, the system MIUI or HyperOS will automatically detect a new SIM card, but mobile Internet and calls often require manual settings to work properly. → SIM-maps and mobile networks.

Here you will see a list of installed maps. Click on the right one to open the advanced settings. First of all, make sure that the "Enable" switch is active. Next, select "Network Type and Preferences." For maximum coverage and speed, it is recommended to choose 5G/4G/3G/2G (auto).

⚠️ Note: If you use an older SIM card issued more than 5-7 Years ago, it might not support networks. 4G/LTE. Even if there is support, 4G The Internet will only work at speed. 3G (H+). To solve the problem, it is necessary to replace the SIM card from the operator.

Special attention should be paid to the settings of APN (access points). These are usually loaded automatically, but if the Internet does not work, check this section. For most operators, it is enough to create a new access point and enter the Internet name, leave the remaining fields empty or fill in data from the official website of the operator.

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Use the function "APN setup" in automatic mode via SMS. Send an empty message to the short number of the operator specified on his website, and the Internet settings will come automatically.

Solution: the phone does not see the SIM card

When you install and reboot the status bar, the "No SIM card" or "Insert SIM card" icon is on, it's not uncommon. First of all, try to remove and re-insert the tray by thoroughly wiping the contacts of the card with dry soft cloth. Oxidation or dust are common causes of loss of contact.

If mechanical cleaning didn't work, check the card on another device. If it doesn't work anywhere, it may be damaged or demagnetized. If the other phone does, the problem may be a software failure of Xiaomi. Try resetting the network settings: Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth.

• 🔌 Contact check: inspect the golden areas on the SIM card for scratches or darkening.
• 🔄 Slot change: try to move the card to another slot (SIM 1 SIM 2) to prevent a particular reader from breaking.
• ⚙️ Software Update: Sometimes modem bugs are patched in system security patches.

Global versions of Xiaomi may have restrictions on the frequencies of some local operators, although this is extremely rare, and it is also worth checking whether the phone is locked by the carrier (SIM-lock) if it was purchased abroad.

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If the phone does not see the SIM card after all the checks, but sees other cards - a hardware malfunction of the reader or plume is likely, diagnostics are required in the service.

Using eSIM in Xiaomi smartphones

Modern flagships and many mid-budget Xiaomi support eSIM technology. It is a virtual SIM card that is sewn into the memory of the device during production. Its advantage is that it does not require a physical tray, is not afraid of moisture and allows you to quickly change operators through the software menu.

You will need to activate the eSIM. QR-It's a carrier code. It goes like this: connect to Wi-Fi, go to Settings. → SIM-maps and mobile networks → Add a tariff. The camera will open to scan the code. Once you upload the profile, you can use the number just like a regular card.

Therefore, before formatting the device, be sure to back up or check with the operator the procedure for restoring the virtual card.