How do you put it in? SIM-card to the phone Xiaomi 9: tray, dimensions, instruction with photo

Xiaomi 9 smartphone owners (including Mi 9, Mi 9 models) SE, Mi 9T Redmi Note 9 is often questioned when you first install it. SIM-Although the process seems simple, there are nuances, from the type of tray (single or hybrid) to the correct size of the nano-SIM. Installation errors can lead to damage to contacts, lack of network or even breakage of the slot. This article will help you avoid typical problems and perform the procedure the first time.

The feature of the Xiaomi 9 line is the use of hybrid trays in most models (except for the Mi 9). SE), where the second slot is paired with a microSD card connector, which means you can choose between two. SIM-card SIM + We'll go through each option in detail, and we'll also tell you how to remove the tray without a paper clip, and what to do if the phone doesn't see the SIM after you install it.

Before you start, make sure you have:

• 📱 Xiaomi 9 phone (any modification) with power off.
• 🪨 Paperclip, needle or special key for extracting the tray (comes complete).
• 📇 Prepared nano-SIM (size) 12.3×8.8 If you have a regular SIM, It must be cut or replaced in the operator’s cabin.
• 🔍 Good lighting – small tray details are easy to lose.

Types of trays in Xiaomi 9: how to determine your option

All smartphones Xiaomi 9 series are divided into three categories by type SIM-tray:

1. Single slot – only one nano-SIM (rarely seen, for example, in some versions of the Mi 9). SE for individual regions).
2. Double Slot – Two nano-SIMs without MicroSD support (e.g. Mi) 9T Pro for the Chinese market).
3. Hybrid slots – one nano-SIM + Second nano-SIM or MicroSD (the most common variant).

To find out the type of your tray:

1. Look at the phone box, it usually shows the number of SIM MicroSD support.
2. Or check in the Settings. → The phone. → Characteristics: if it says "Two" SIM-"MicroSD" means "hybrid tray.

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If you’ve been buying a phone with your hands, check the tray visually: Hybrid slots on a metal frame have MicroSD markup (usually labeled as “microSD "SD").

In the Redmi Note 9 model, the second slot (Slot 2) works only in mode. 2G, even if it's installed in it 4G-SIM. This is a hardware limitation and cannot be circumvented by software.

2. Step-by-step instructions: how to open the tray for SIM-map

The most critical step is to remove the tray, and if you do it wrong, you can bend the contacts or break the locking mechanism.

Turn off your phone (required!).

Place the device on a flat surface with the screen down.

Find a hole to extract the tray (usually on the upper or lateral face).

Prepare a paper clip or a special key.

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Next:

1. Put the paper clip in the tray hole to the end, and you'll feel a slight click, which means that the lock has snapped.
2. Carefully pull the tray over you. Don't force it -- if it doesn't go, check if the tool has fully entered the hole.
3. If the tray is stuck, slightly swing it left-right, without pulling sharply.

In the Mi models 9T Redmi Note 9 tray is located on the left side, and in Mi 9 and Mi 9 SE — Target the small circular hole next to the volume buttons.

Installation SIM-Cards: correct position and errors

When the tray is removed, pay attention to its design:

• 🔹 There are stains and stains on the frame of the tray. SIM-Nano-SIM should fit tightly into them without gaps.
• 🔹 Contacts SIM (The golden part) should be facing downwards, to the base of the tray.
• 🔹 In hybrid trays, a microSD slot is usually marked as "SD" separately located.

Typical errors in installation:

• ❌ The parties are confused. SIM-maps (contact top).
• ❌ Micro-SIM instead of nano-SIM (not fitting into the grooves).
• ❌ The memory card is inserted into the slot for SIM (vice versa).
• ❌ The tray is not fully inserted (the phone will not see the SIM).

Once the cards are installed, gently press the tray back into the phone before clicking, and make sure it sits flat and doesn't protrude over the body.

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After installation SIM-The phone can't see the card, so turn it off and turn it on again, and 90 percent of the time, it solves the problem.

4. Network setup after installation SIM-map

After turning on the phone, additional settings may be required:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if there are two, assign the main one for calls and mobile Internet).
3. Include parameters: 📶 Mobile data (for Internet access). 📞 Incoming challenges and Outgoing challenges. 📩 SMS (if necessary).

Access Points (APN)

In the two-in-one SIM-You can use the Mi 9, Redmi Note 9 cards:

• 🔄 Assign different cards for calls and the Internet.
• 🔕 Turn off one of them. SIM for a while (for example, to save charge).
• 📶 Use it. 4G Only one card (the second one will work in the same card) 2G/3G).

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If the phone does not catch the network, try to manually select the operator in the settings: Settings → SIM-map → Choice of network → Networking.

Frequent problems and their solutions

Even with the right installation SIM-There may be problems with the cards. Let's look at the most common ones:

⚠️ Attention: If after installation SIM-The phone stopped turning on or rebooted permanently, immediately remove the tray and check if the contacts are bent. SIM-The slot can lead to a short circuit.

If none of these methods helped, the problem may be:

• 🔌 Hardware malfunction (module damaged) SIM-map).
• 📱 Software failure (needs resetting or flashing).
• 📡 Blocking IMEI (Check the status of your phone via *#06#).

6. How to Insert MicroSD in Xiaomi 9 Hybrid Tray

If your phone supports memory cards, you can install a microSD instead of a second one. SIM-For this, it's a map:

1. Turn off the phone and remove the tray (as described above).
2. Place the nano-SIM in the first slot (usually marked as "SIM 1").
3. Insert MicroSD into the second slot (tag "SD") The card must enter without effort.
4. Carefully squeeze the tray back before the click.

After the phone is turned on:

• 📁 Go to Settings. → Storage to format a card as internal memory or external storage.
• 🔄 If the card is not defined, try formatting it on a PC in format. FAT32 exFAT.

⚠️ Note: The Mi 9 and Redmi Note 9 have a maximum supported MicroSD of 256GB and 512GB, respectively. Larger cards may not be recognized or may not work smoothly.

7. Alternative methods of removing the tray without a paper clip

If there is no paper clip or special key at hand, you can use:

• 🖊️ Ballpoint pen – disassemble it and use a metal bar.
• 📎 Stationery brace - unbend it to get a straight metal end.
• 🔑 The key to the watch (if it is thin enough).
• 🧲 Magnet – bring a powerful neodymium magnet to the tray location (sometimes this helps to shift the locker).

If nothing helps, do not use knives, forks or other sharp objects - this can damage the body or internal components.

8. Video instruction and additional resources

For clarity, we recommend watching official videos from Xiaomi or proven technical channels:

• 🎥 Video installation instructions SIM in Mi 9.).
• 📄 Official support for Xiaomi – here you can download the user manual for your model.
• 🛠️ Forum MIUI — Discuss and resolve problems with SIM-map.

If you prefer textual instructions, download the user manual for your model (available in several languages, including Russian).

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Before buying a MicroSD for Xiaomi 9, check its compatibility on the manufacturer’s website. Some cards (such as SanDisk Ultra) may not be recognized due to incompatibility with the protocol. UHS-I.

FAQ: Answers to Frequent Questions