How to insert a SIM card into a Xiaomi smartphone: detailed instructions with a photo

Installing a SIM card in a Xiaomi smartphone seems like a simple procedure, but in practice, users face a lot of nuances, from mismatches of sizes to jammed trays. Especially difficult for beginners who are holding a Chinese brand device for the first time. In this article, we will analyze all possible scenarios from a standard nano-SIM to a virtual eSIM, and also tell you how to avoid typical installation errors.

It’s important to understand that Xiaomi’s tray design differs depending on model and year of release. For example, the Mi 11 and Redmi Note 10 series flagships support hybrid slots (SIM + microSD), while the new Xiaomi 13 and Xiaomi 14 can work with two physical SIMs at the same time. We’ll dwell on each case in detail so that you can confidently cope with the task without risking damage to the device.

What types of SIM cards support Xiaomi smartphones

Before you insert a SIM, you need to determine which type of SIM is compatible with your Xiaomi.

• 📱 Nano-SIM (4FF) — standard for all Xiaomi smartphones with 2016 Size of the year: 12.3 × 8.8 mm.
• 🖥️ Micro-SIM (3FF) — It is found in older models (up to) 2015 years), e.g. Redmi 1S or Mi 3. Size: 15 × 12 mm.
• 🌐 eSIM – virtual SIM available in flagships (Xiaomi) 12T Pro, Xiaomi 13 and newer. does not require physical installation.

To find out which slot is in your device, check the specifications on the official Xiaomi website or look at the tray: usually next to the connector there is an icon indicating the supported formats. For example, if you see the icon SIM1 + SIM2 or microSD, this is a hybrid slot where the second SIM or memory card occupies one slot.

Some models (such as the POCO X3 Pro) have separate slots for two nano-SIMs and a microSD, allowing you to use two physical SIMs and a memory card at the same time.

Preparation for installation: what will be needed

Before you start the installation, prepare everything you need. Here is the full list:

• 🔧 A paper clip or needle to remove the tray (combined with the phone) will also work.
• 📱 SIM card is the right size, if you have a regular one. SIM, It can be cut to nano-format in the cabin of the operator or independently (but it is risky!).
• 🔍 Good lighting – the tray and connector are small, easy to drop details.
• 🧲 Magnetic screwdriver (optional) - useful if the paperclip does not work or the tray is jammed.

If you're switching from another phone, remember to save contacts and important data from your old SIM.

1. Copy your contacts to your Google or Mi Account.
2. Export them to the.vcf file via the contact menu.
3. Use applications like Mi Mover to transfer data.

Note: If your Xiaomi supports eSIM, you will need to activate it. QR-Check with the provider (MTS, Beeline, Tele2, MegaFon) whether it provides such a service.

Step-by-step: how to insert a SIM card in Xiaomi

Now, to the process itself, follow the instructions carefully so that you don't damage the tray or the SIM contacts.

1. Turn off the phone. This is not necessary, but it is recommended to avoid failures when recognizing the SIM.Push and hold the power button, then select Turn off.
2. Find a SIM card slot, usually on the upper or lateral end of the case, and on newer models (Xiaomi 13, Redmi Note 12), the slot is most often on the right, and on older models (Redmi 4X) on the left.
3. Remove the tray. Put the paper clip in a small hole next to the slot and press until you click. The tray should extend 1-2 mm, after which it can be pulled out with your fingers.
4. Set the SIM. Put the nano-SIM in the tray with the contacts down (the golden part should be visible).If the slot is hybrid, the second SIM or microSD is installed on the other side.
5. Put the tray back in. Squeeze it carefully until you click. Don't use excessive force -- if the tray doesn't come in, check if the SIM is properly installed.
6. Turn on your phone. Wait for the device to recognize the SIM card (it may take 1-2 minutes).

If the phone does not see the SIM after turning on, check:

• 🔄 Is the SIM properly installed (contacts should fit tightly to the connector).
• 📶 Flight mode is enabled (Settings) → SIM-maps and mobile networks).
• 🔧 Is there any damage on the SIM or tray.

Features of installing a SIM card in popular Xiaomi models

The design of the trays may vary depending on the series and year of production, and let's look at the most common cases.

If you have an eSIM model (such as Xiaomi 13 Ultra), the process of activating the virtual SIM looks like this:

1. Get it. QR-code from the operator (usually sent to email or in the personal account).
2. Go to Settings. → SIM-maps and mobile networks → Add a mobile fare.
3. Select Add eSIM and scan. QR-code.
4. Confirm activation (reboot may be required).

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If your Xiaomi doesn’t see eSIM, check if your carrier supports eSIM. As of 2026, eSIM is officially available from MTS, Beeline and MegaFon, but not in all regions.

Common Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when installing a SIM card, and here are the most common ones and ways to solve them:

⚠️ Note: If the SIM is set up contacts, the phone will not see it, and with prolonged use this can lead to damage to the connector.

• 🚫 The reason for this is: improper installation, contamination of contacts, inactive tariff. Solution: reinstall the SIM, clean the contacts with alcohol, check the balance.
• 🔧 The tray is not fixed, the reason is: skewed SIM, the garbage hit the slot, the solution is: gently blow out the slot and check if the SIM is flat.
• 📵 The phone sees the SIM, but there's no network. APN, The solution: check the settings in Settings → SIM-map → Access points (APN).
• 🔄 Simka works, but the network goes down periodically, causes: weak signal, damaged SIM, solution: try another SIM or contact the operator.

Another common problem is a jammed tray, which can happen if:

• The SIMKA is crooked and blocks the mechanism.
• There was dust or moisture in the slot.
• The mechanism is worn out (relevant to older models).

If the tray is not pushed out by a paper clip, do not try to pull it out by force - this can break the lock.

How to trim a SIM card to nano-SIM on your own

If you have a regular or micro-SIM and your phone requires a nano format, you can cut it yourself, but it's risky: if you make a mistake, the SIM will become unusable. We recommend you go to the operator's salon, but if you decide to do it yourself, follow the instructions:

You'll need:

• 📏 Line or template for cropping (can be printed from the Internet).
• ✂️ Sharp scissors or a stationery knife.
• 🧼 Alcohol and cotton disc to clean contacts.
• 🔍 Lupa (optional, for accuracy).

Step-by-step:

1. Overlay the nano-SIM template on your SIM (contacts must match).
2. Carefully circle the marker of the cut line.
3. Cut the plastic on the marking, leaving a stock of 0.5 mm.
4. Then, make sure to clean the edges with sandpaper (if they are uneven).
5. Check that the contacts are not damaged and insert the SIM into the phone.

⚠️ Warning: If the SIM doesn't work after pruning, it can't be repaired. It's also not recommended to trim the micro-SIM to nano-SIM if it has notches, which can damage the chip.

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If you are not sure about your skills, it is better to spend 10 minutes and get a new nano-SIM from the operator for free than risk the performance of the SIM.

What to do if the phone does not see the SIM card after installation

If the SIM is installed correctly, but the phone does not recognize it, follow the following steps:

1. Reboot the device. Sometimes a simple reboot helps: hold the power button and select Reboot.
2. Check your network settings. Go to Settings. → SIM-maps and mobile networks and make sure that the SIM is activated (slider should be enabled).
3. Update your operator settings. In the same menu, find the option to Update your network settings (may be called differently depending on the model).
4. Reset your network settings. Go to Settings → System → Settings Reset → Mobile Network Settings Reset. Attention: This will delete the stored Wi-Fi passwords.
5. Check the SIM card on another phone. If it doesn't work there, the problem is the SIM card, contact the operator for a replacement.

If nothing helps, hardware problems may occur:

• 🔌 The SIM card connector is damaged (for example, after the phone falls).
• 🔋 Problems with antenna module (relevant for phones after repair).
• 🛠️ Maternity board malfunction.

In such cases, self-repair is not recommended – contact the authorized Xiaomi service center.

FAQ: Answers to Frequent Questions