How to insert it correctly SIM-map 9A: photo-hacking

Xiaomi Redmi 9A — One of the most popular budget smartphones, still in use in 2026, and despite its simplicity of design, new users often have questions about basic operations, such as how to install it. SIM-Errors at this stage can result in a lack of network, damage to the tray or even contacts inside the phone.

In this article we will analyze not only the standard installation procedure, but also the nuances that are not written in the official instructions: how to choose the right one. SIM-A map (nano or micro) of what to do if the tray is not inserted, and how to check if the phone recognizes the card after installation, and you will also know what tools you will need, and where to get them if you do not have a special key at hand.

If you just bought a Redmi. 9A If you're planning to change operators, keep this manual, it will save you time and nerves, and for those who have already experienced problems (for example, the phone can't see). SIM-map, at the end of the article there is a section with solutions.

Preparation: What will be needed for installation SIM-map

Before you start the installation, make sure you have everything you need, unlike the flagship models, where the tray is used for the installation of the main tray. SIM-cards are often put forward without tools, in Redmi 9A It's going to require a special key:

• 📱 Smartphone Xiaomi Redmi 9A (off-plane).
• 🔑 Key to extracting tray SIM-If you lose a card, you'll get a paper clip or a needle.
• 🪪 SIM-nano-mapping-SIM (4FF). If you have a different size card, it should be cut or replaced in the operator’s cabin.
• 🔦 Good lighting – the tray is small and easy to drop in the dark SIM-map.

Pay special attention to the format SIM-maps. 9A It's just a nano-enabled-SIM (12.3 × 8.8 If you have an old-style card (micro or standard), do not try to insert it by force, it can damage the contacts.2, MegaFon) and ask for a card to be replaced for free. 5–10 minute.

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If you don't have a tray key, untighten the paperclip and use it instead, the main thing is not to push too hard so as not to bend the mechanism.

Also check if there is already a phone in the phone. SIM-If so, remove it before installing a new one. 9A There's a two-nano slot-SIM one SIM + microSD card (up to) 512 GB, but use two at the same time. SIM And the flash drive can not - you have to choose.

Where is the slot for SIM-maps 9A

Unlike some Xiaomi models, where the slot is located on top or side, in Redmi. 9A It's on the left end of the body, and to detect it, you take the phone in your right hand with the screen to you, and you'll see a small hole with a metal rim and a small hole next to it. SIM-map.

If you are holding your phone for the first time, you can confuse the slot with a microphone or speaker. To avoid error, focus on the following signs:

• 🔍 The hole for the key has a diameter ~1 mm and is located strictly in the center of the metal frame.
• 📏 The distance from the bottom of the phone to the slot is approximately 1/3 hull height.
• 🎵 Next to the slot there is no speaker grille or microphone holes.

On some versions of Redmi 9A (Like Redmi. 9AT) The slot can be marked with a small icon. SIM-If you're not sure, flash a flashlight -- the metal frame of the tray will reflect light, unlike the plastic elements of the case.

Step-by-step instruction: how to insert SIM-map 9A

Now, to the process itself, follow the instructions carefully so that you don't damage the tray or the contacts inside your phone, and if something goes wrong, there's a problem-solving section at the end of this article.

1. Turn off your phone or put it in airplane mode, and that will prevent any failures in recognition. SIM-To turn off, press the power button and select Turn off.
2. Take the key to remove the tray (or clip) and gently insert it into the hole next to the slot. Press until you click - the tray will slide out of the case a little.
3. Pull the tray over and remove it completely. Don't put too much effort into it -- if the tray doesn't go, check if you pressed the mechanism correctly.
4. Place the tray on a flat surface and place it on it. SIM-Note the notch in the corner of the card - it should match the shape of the slot. The card should be placed in the contacts down (the golden side is not visible after installation).
5. Carefully insert the tray back into the slot before clicking. Make sure it sits flat and doesn't protrude over the body.
6. Turn on your phone and wait for the download. If done correctly, a network indicator (such as MTS or Beeline) will appear in the top panel.

The tray is completely removed from the phone

SIM-map is downward contact

The notch on the map coincides with the shape of the slot

Phone is off or in aircraft mode-->

If you set two SIM-Cards, place them in slots. SIM 1 and SIM 2 (usually signed on the tray). For a memory card, use a microSD slot, but remember that in this case, the second slot is for the memory card. SIM will be blocked.

⚠️ Warning: Never try to insert SIM-You can force a card without a tray or force it into a slot, and that can bend the contacts inside the phone, and you need to disassemble the device to repair it.

What to do if your phone can’t see SIM-map

Sometimes after installation SIM-The phone doesn't recognize the card, and the reasons can be different, from the wrong installation to the problem with the card itself:

If none of the solutions worked, try the following:

1. Restart your phone (sometimes the system doesn’t recognize a new one right away). SIM-map).
2. Check if the mobile network is enabled in the settings: go to Settings → SIM-Maps and mobile networks and activate the switch next to yours SIM-card.
3. Update your phone firmware. Go to Settings → About Phone → Update your system and install the latest version of MIUI.
4. If the problem persists, contact the service center, possibly damaged slot contacts.

How to set up a mobile network after installation SIM-map

After successful installation SIM-The cards are left to set up the mobile network. 9A It automatically picks up the operator's parameters, but sometimes you have to type them manually:

1. Open the Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-map (if there are two, set each separately).
3. Make sure that the mobile data switches and incoming calls are active.
4. If the internet is not working, click Access Points (APN) and add a new profile. APN options can be found on your carrier's website (for example, for MTS it is Internet.mts.ru).

To speed up the settings of the mobile Internet, you can use the automatic definition of parameters:

• 📶 Dial on the phone keyboard ##4636##.
• 🔄 Select Phone Information → Select a network and wait for the search for available operators.
• 🔍 If your operator is not displayed, try manually entering its name.

If you use two of them SIM-maps, you can choose which one will be the main one for calls and the Internet. → SIM-maps and mobile networks → Basic SIM-map.

⚠️ Attention: If you insert SIM-slot-card SIM 2, and the memory card in the microSD, then the slot SIM 1 will be unavailable. This is a feature of the Redmi design. 9A — You can use two at the same time. SIM-card SIM + flash-drive.

Frequent errors in installation SIM-maps and how to avoid them

Even experienced users sometimes make mistakes when working with the Internet. SIM-Here are the most common ones and how to prevent them:

• 🔄 We've got the map mixed up. SIM-The card is up, the phone won't see it. Always make sure the gold part is on the bottom.
• 🔨 Pressing the tray too much, it can bend the mechanism, or even break the plastic latches. Press the key smoothly, without jerking.
• 🗑️ Garbage entering the slot. Dust or small particles can block contacts. Periodically clean the tray with a dry brush or compressed air.
• 📵 Use of non-activated SIM-If the card is new, it must first be activated by the operator (usually by call or through the website).
• 🔋 Installing the card with the phone on. Although some models support hot replacement, Redmi 9A Better to turn off - this reduces the risk of failures.

Another common problem is the use of adapters for SIM-For example, if you have a nano-SIM, But you're trying to put it in a micro slot.-SIM It's in the Redmi. 9A It's not going to work, because the tray is designed strictly for nano-format. If your card doesn't fit, don't improvise, contact the operator for a replacement.

Also, avoid frequent replacements. SIM-Contacts in the slot wear out over time, and if you take out/paste the tray regularly, this can lead to poor connection.If you need to switch between cards often (for example, for work), consider the option of two. SIM-using eSIM cards or using eSIM (although Redmi) 9A He doesn't support it).

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If the phone stopped seeing SIM-card after a fall or impact, do not try to repair it yourself. probably left the contacts of the slot, and to recover will require soldering equipment.

Alternative ways: how to do without a key for the tray

Often users lose the key to retrieve the tray SIM-Fortunately, there are a number of ways to do without it, and the key is to be careful not to damage the machinery.

The easiest way is to use a paper clip or a needle. Untighten the paper clip so that you get a straight metal bar with a diameter of ~0.5 mm. Put it in the hole next to the slot and press until you click. The tray should move a few millimeters, after which it can be pulled out with your fingers.

If there is no paper clip at hand, the following items will fit:

• 🖊️ The gel pen rod (remove the writing element and use a plastic tube).
• 🧷 Toothpick (sharpen the tip so that it enters the hole).
• 🔧 Thin screwdriver (size to avoid damaging the body).
• 📎 Hair stud (if it is thin enough).

If the tray is stuck and does not retract even after pressing, try the following method:

1. Place the phone on a soft surface (such as a towel) with the screen down.
2. Stick a small piece of tape on the tray so that it protrudes a little beyond the edge of the case.
3. Carefully pull the scotch while simultaneously pressing the key (or paperclip).

If nothing works, don't make too much effort - you better contact the service center. The cost of removing the tray usually does not exceed 500 rubles, but you will avoid the risk of damaging the phone.

FAQ: Answers to Frequent Questions about SIM-maps 9A