How to change the right way SIM-map in Xiaomi smartphones

Xiaomi’s modern smartphones offer a lot of features, but the basic need to replace them is not. SIM-The card remains relevant for millions of users: changing the operator, switching to a tariff with a large amount of traffic or simply damaging an old chip requires intervention in the design of the device. Despite the apparent simplicity, improper actions can lead to breakage of the tray or damage to contacts.

In this detailed guide, we’ll take a look at all the nuances of the procedure for different models, from budget Redmi to flagship Mi. You’ll learn how to safely remove the tray, what’s the difference between hybrid slots and standard ones, and what to do if the phone stops seeing the network after a replacement.

It is important to note that the architecture of the memory card and SIM-Android devices may differ depending on the year of release, and some models are already moving to eSIM technology, where physical replacement is not required at all, but the classic method still dominates the market.

Preparing for replacement: tools and safety

Before you start any manipulation of the hardware, you need to make sure that you are operating in a safe environment. Although modern gadgets are better protected from static electricity than their predecessors, there is still a risk of damaging sensitive electronics.

To retrieve the tray, you'll need a special key that comes with the box. If the original tool is lost, you can use a thin paper clip to straighten one of its ends. Never use sewing machine needles or too thick pins, as they can get stuck in the hole or damage the spring mechanism.

⚠️ Warning: Before removing the tray, it is strongly recommended to turn the device off completely.Although many modern phones support hot replacement, the power outage ensures that the system correctly resets the network settings when turned on.

Make sure your hands are dry and clean. fat spots or moisture on contacts SIM-If you change the card due to physical wear, carefully examine the new chip for scratches.

Types of trays in Xiaomi devices

Engineers use different tray configurations depending on the price segment and the year of the model. Understanding the type of tray is critical so you don't try to insert a second tray. SIM-The map is where the microSD should be.

In budget and mid-range models, a combined slot is common, where users have to choose between using two SIM cards or one SIM and a memory card, and flagship models are more often equipped with three separate compartments, which allows them to avoid sacrificing storage space.

📊 What type of tray do you have in Xiaomi?

2 SIM + MicroSD (3 seats)

2 SIM or 1 SIM + MicroSD (hybrid)

Only the eSIM.

I don't know / Other

You can visually determine the type of tray by looking at the end of it. If you see two independent circuits for cards, you have a full-fledged triple slot. If one of the circuits has a discontinuous structure or is marked with a memory icon, this is a hybrid version.

Step-by-step: Replacing the physical SIM-map

The replacement process begins with finding a key hole, which is located on the bottom end of the case in most Xiaomi and Redmi models, next to the USB-C connector. In some secure models or tablets, the hole may be on the side of the side.

Insert the key (or paper clip) perpendicular to the surface of the case. Press confidently, but without excessive effort until you feel a slight click of the spring. The tray should extend a few millimeters, after which it can be gently tucked with the nail.

☑️ Replacement algorithm SIM

Turn off the smartphoneFind a key hole.Press the key before you click.Remove the tray and replace the card

Done: 0 / 4

Put the new one down. SIM-Notice the cut angle of the plastic, which should be the shape of the tray, the card should be tight and not wobbly. If it's hanging around, you might be using a poor-quality adapter or a wrong-format card (e.g., Mini-SIM instead of Nano-SIM).

Once installed, carefully insert the tray back into the case. Make sure it enters smoothly and to the end. If you feel resistance, do not press, check the orientation of the tray to avoid damaging the internal contacts.

⚠️ Attention: The tray in Xiaomi smartphones has a well-defined side of the installation.If it doesn't enter easily, flip it over.Forced indentation can break the guides inside the housing.

Turn on the device and wait for the operating system to boot. Usually the phone automatically detects the new network. If that doesn't happen, go to the settings and make sure that the slot you select is activated.

Working with eSIM in new Xiaomi models

The eSIM (embedded SIM) technology is being gradually introduced into new Xiaomi flagships such as the Mi 13 series, Mi 14 and some Note series models.It is a virtual SIM card that is built into the motherboard and does not require a physical tray to activate.

To activate eSIM, you do not need to go to the communication room for plastic. QR-It's a code that you need to scan through your phone's settings, and it allows you to instantly change your fare or operator from anywhere in the world.

The advantages of eSIM over a physical card

The virtual card takes up less space inside the case, which allows you to increase the battery, and it is protected from physical wear and tear, as the profile can be remotely blocked or re-released. To add a profile, go to the Settings menu. → SIM-maps and mobile networks. Select the option "Add a tariff plan" and point the camera at the QR-It takes no more than a couple of minutes with a stable Wi-Fi connection, and when you flash the phone or reset it to factory settings, the eSIM profile can be deleted and you have to restore it through re-scanning the code. SIM-After you have installed two cards, you need to set them up correctly. MIUI or HyperOS, this is done through the SIM card management menu. Here you can assign which card will be used for mobile Internet and which for voice calls by default. The "Use for Internet connection" option allows you to select the main card. If the traffic on it runs out, the system can suggest switching to the second one if the corresponding setting is activated. This helps save money and control costs. The function Description Mobile Internet Select a card for data transfer Select a tariff with a large amount of GB Default Card for outbound calls Card with cheap minutes or SMS by default Map for sending messages Any active card 4G/5G speed limiting function is also available. You can set your phone to request confirmation before each call from a particular SIM card. This is useful if you only use one card for incoming or rare outgoings. Remember to check the status of the cards in the list. If one of them shows as "Not found" or "No network", try to reboot the device or rearrange the cards in the tray in places. Typical problems and ways to solve them, even when installed correctly, can result in software or hardware conflicts. Often users face a situation where the phone sees the card but is not registered on the network. In this case, the first thing to check if the slot is activated in the settings, try to reset of the device, if the device, you can try to get the system error on the service. It also helps to switch the network mode from 5G on 4G/LTE Settings menu → SIM-map → Type of network. ⚠️ Warning: If the phone says "No" SIM-If you replace the cards, don't rush to carry them for repair. Try to gently wipe the contacts with a wiper or an alcohol wipe -- oxidation is often the cause of loss of contact. In rare cases, the problem lies in the tray itself. If the contacts inside the phone are fuzzy or oxidized, it may be necessary to professionally clean with ultrasound or replace the connector in the service center. 💡90% definitional problems SIM-The cards are solved by restarting the device, correctly placing the chip in the tray or cleaning the contacts with alcohol. PIN-When you turn on, the phone may request input. If you enter the wrong code three times, the card will be blocked and you will need to enter the wrong code. PUK-A code that can be found on a plastic basis from a SIM card or in the operator's personal account. SIM-Technically, it is possible, since most modern smartphones support Hot-swap. However, the system may not see the new card right away, and still need to restart. Plus, there's a small risk of a power surge, so it's safer to turn the device off.Why Xiaomi doesn't see the second one SIM-There are several reasons: the tray is inserted by the wrong side, the card is damaged, the slot is deactivated in the settings or a problem in the firmware. Also check if the tray is hybrid - in some models, when installing the memory card, the second slot for the device is not a hybrid. SIM It's locked hardware. How to move contacts from the old one. SIM-map? Insert the old card into your phone, go to the Contacts app, select Import/Export, and save the contacts to your Google account or internal memory. SIM Just sync to get all the numbers back. What if the tray is stuck and not taken out? Don't use excessive force. Try pressing the tray slightly and then pressing the key again. Sometimes it helps to use sticky tape to pull the edge out if it protrudes a little. In extreme cases, you'll need to disassemble the back cover in the service. SIM - No, the replacement. SIM-The card is a standard procedure provided by the manufacturer, and using a paper clip instead of a key also does not deprive you of the guarantee if you do not damage the case or internal components by negligent actions.