How to insert a SIM card in Xiaomi Redmi 10: full instructions

Installing a mobile operator card is the first step to take immediately after unpacking the new Xiaomi Redmi 10. Despite the apparent simplicity of the process, modern devices use a combined tray with its own design features. Incorrect installation can lead to the fact that the device will not see the network or, in the worst case, damage contacts.

In this article, we will analyze in detail all the nuances of working with a tray for SIM cards, determine the correct type SIM-We'll look at the typical user errors, and carefully following the instructions will help you avoid mechanical damage and quickly activate the communication.

Features of the design of the Redmi 10 tray

The Redmi 10 has a hybrid slot on the bottom end of the case, which means you can either have two Nano-SIM SIM cards in the same compartment, or you can have one SIM card and one MicroSD card to expand storage, and it's important to understand that you can't use two SIM cards and a memory card at the same time.

The tray is asymmetrical in shape, which physically prevents it from being inserted by the back, but the pulling force must be moderate. Inside the case is a spring mechanism that pushes the module when you press the paper clip. Xiaomi engineers have designed contact protection, but careless handling of metal elements can lead to oxidation or breakage.

It is worth noting that depending on the region of sale, the equipment may differ. In some versions of the device, there may not be a clip in the box for extraction, so it is recommended to prepare a thin metal object in advance. Also on the tray there is often a marking indicating which slot supports 4G/5G priority network.

⚠️ Warning: Never try to remove the tray with sharp objects like a needle unless you have a special paper clip.The needle may slip and damage the microphone or speaker located next to the slot.

To successfully install, you’ll need to make sure your smartphone is off or on standby, although current standards allow hot replacement, but for initial network setup, it’s best to do the procedure on the device that’s off so the system can correctly recognize the new operator.

Tools and training required

Before the procedure, you need to prepare a workspace with good lighting, you need the Xiaomi Redmi 10 smartphone itself and the key to extract the tray. If the original tool is lost, you can use a stationery clip, straightening one of the ends of it, the main thing is that the tool diameter corresponds to the hole in the tray.

You should also check the self. SIM-Redmi 10 requires a Nano-SIM module, which is the smallest standard at the moment, and if your card is larger, you need to break it down by punch or contact the carrier's salon to replace it. The use of adapters is not recommended, as they can get stuck inside the housing.

• 🔑 Key for extraction (clip or special pin).
• 📱 Xiaomi Redmi 10 smartphone with the screen off.
• 💳 SIM-Nano-SIM card with an active tariff plan.
• 🧼 Dry cloth or wipe for wiping contacts (if necessary).

Make sure your hands are dry and clean. Fat or moisture can get on the card's golden pins or inside the slot, causing unstable communication.If the card has been used before, gently wipe its chip with a dry soft cloth.

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If you're using the old one SIM-map that was cut with scissors, make sure the edges are flat and there are no burrs that can damage the tray mechanism.

Step-by-step installation instructions

The installation process takes no more than a minute, but requires care. First, find a small hole near the bottom of the smartphone. USB-Put the key perpendicular to the body and press before you click, and the tray should extend a few millimeters, and then it can be removed with your fingers.

Place the tray on a flat surface and notice the shape of the tray. One side is designed for Nano-SIM, the other side is designed for either the second Nano-SIM or the memory card. Set the SIM card so that the bevelled angle matches the notch on the tray, and the golden contacts look up. The card should fit tightly to the plastic base.

Sequence of action:


1. Turn off the smartphone (recommended).




2. Find the hole on the bottom end.




3. Press the paperclip until you click.




4. Remove the tray.




5. Place the SIM- card in slot 1 or 2.




6. Put the tray back to full stop.

After you've laid the card, gently insert the tray back into the case. Watch your orientation: it should come in smoothly, without effort. If you feel resistance, turn the tray over or check if the map is correct. After installation, turn on the phone and wait for the network signal to appear.

Network setting and slot selection

Once the device is turned on, the system will automatically determine the card installed. If two SIM cards are used, MIUI will suggest adjusting their priorities. Usually, slot 1 supports all frequency bands, including 4G and 5G, while the second slot can operate in 2G/3G mode when the first card is actively using the Internet, although in modern models both slots are often equal.

To check the settings go to the Settings menu → SIM-Maps and mobile networks. Here you can assign which card will be used for mobile Internet, voice calls and mobile phone calls. SMS This is especially important for users who share work and personal contacts.

If the phone is turned on, it says no. SIM-"cards," try rebooting the device. Sometimes it takes time for the system to initially register with the operator's network. PIN-code, if you have previously installed it.

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Both slots in Redmi 10 support 4G, but the maximum Internet speed will be only on one selected card, the second at this point will go into standby mode or 2G/3G.

Possible problems and solutions

Even if installed correctly, there may be software or hardware failures. Contact contamination is a common problem. If the phone periodically loses network or writes "SIM error," remove the card and wipe the chip with a wipe or an alcohol wipe. Copper oxidation on contacts is a natural process, especially in wet climates.

Another reason is frequency incompatibility. The operator may not support the ranges your phone accepts in a given region, although this is rare for global Xiaomi versions. Check if roaming is activated if you are abroad, or contact the carrier to check the APN settings.

• 🔍 Clear the contacts. SIM-card-tray.
• 🔄 Restart the device after re-installation.
• ⚙️ Reset network settings in the settings menu.
• 📞 Check the card on another phone to rule out breakdown.

In rare cases, the problem lies in the tray itself, the springs can weaken, and contact with the card will be unstable, and if a light tap on the body, the connection disappears, you may need to replace the tray in the service center.

⚠️ Note: Do not use glue or scotch to fix SIM-The glue can leak into the smartphone and damage the motherboard, and the tape disrupts electrical contact.

Use a memory card instead of a second SIM

Many users choose Redmi 10 for the ability to expand memory. If you do not need a second SIM card, you can install a microSD card with a capacity of up to 1 TB. It is inserted into the second slot of the tray, similar to the SIM card, but has a different form of cutout.

Once installed, the system will offer to use the card as a portable storage or as part of internal memory, depending on your needs: portable storage allows you to easily transfer files to other devices, and internal storage increases the space for installing applications.

Therefore, it is recommended to install heavy games and demanding applications on the internal memory of the smartphone, and save media files to the map.

Frequently Asked Questions (FAQ)