Replacement of SIM-card in Xiaomi Redmi 9: instructions with photos and secrets

Replacement SIM-The maps in the Xiaomi Redmi 9 seem like a simple procedure, but even here there are pitfalls that few people know about. For example, why does the phone not see the network after installing a new card? SIM-This article will not only tell you how to physically change the SIM card, but also help you avoid the typical errors that lead to loss of communication or damage to the tray.

The Redmi 9 (codenamed lancelot) is equipped with a hybrid slot, which means you can use either two nano-SIMs or one nano-SIM + MicroSD up to 512 GB. But this choice requires care - improper installation can lead to jamming of the tray or even damage to contacts. We will analyze all the steps from tool preparation to network verification after replacement, and also answer the questions that arise from users most often.

Preparation for replacement SIM-maps: what you need

Before you start removing the old SIM, make sure you have everything you need on hand, which will save time and prevent unpleasant surprises like a broken tray or a lost paper clip.

Here is the minimum set that will be required:

• 🔧 A paper clip or needle to remove the tray (combined with the phone, but often lost) will do any thin metal wire with a diameter ≤0.8 mm.
• 📱 New nano-SIM (if you change operator or card) Make sure it's trimmed to the right size - Redmi 9 doesn't support micro-SIM!
• 📷 A flashlight (optional) will help illuminate the slot if the light in the room is dim.
• 🧲 Magnet or tweezers (in case the paperclip falls into a hard-to-reach place).

If you are planning to use a memory card with SIM, Check its compatibility: Redmi 9 supports MicroSD format FAT32 Or exFAT (up to 512GB) and larger cards may not be recognized. SIM-The cards will not be available – this is a feature of the hybrid slot.

⚠️ Warning: Never use toothpicks, pins or other fragile objects to remove the tray, and they may break inside the hole, and you will have to disassemble the phone to remove the debris.

Where is the slot for SIM-Maps in Xiaomi Redmi 9

Unlike some Xiaomi models, where the slot is located on the top or side, in Redmi 9 it is on the left end of the case.This is a typical place for most budget smartphones of the brand, but if you hold this model for the first time, it may not be noticed.

To find the slot, follow the following steps:

1. Hold the phone in your right hand so that the screen is facing you.
2. Look at the left end (where the volume buttons are located).
3. About in the middle of the end, you'll see a small circular hole -- this is the socket for extracting the tray.

If you are not sure you have found the right place, compare with the photo below (context image):

| Screen |




|                   |




| [Loudness buttons] ← Slot here!




|___________________|

On some Redmi 9 models (e.g. Redmi) 9A or Redmi 9C) The slot can be on the right, depending on the modification, but in the base version of Redmi 9. M2004J19C) He's always on the left.

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If you can’t find a hole for the paperclip, swipe your finger across the end of the phone – it should go a little deeper inwards compared to the rest of the surface.

Step-by-step: how to remove the old SIM-map

Now, to the most critical part of this, the tray extraction, where you need to be careful not to damage the locking mechanism, and if you've never changed your Sim at Xiaomi before, follow the steps.

Algorithm of action:

1. Turn off the phone (optional but recommended) This will prevent accidental taps on the screen and resets.
2. Take a paper clip and put it in the hole on the end of the phone, all the way up, and you'll feel a little bit of resistance -- that's okay.
3. Press with a little effort until the tray is pushed 1-2 mm.
4. Carefully pull the tray over yourself and remove it completely from the phone.

If the tray is not extended:

• 🔄 Check that the paper clip is inserted perpendicular to the body, and not at an angle.
• 🛠️ Try using another paperclip - perhaps the first one is too thin or bent.
• 💡 Light the hole with a flashlight: sometimes dust or dirt blocks the mechanism.

⚠️ Warning: If the tray is jammed and it doesn't move even after a few attempts, don't use force. This can break the plastic lock inside the phone.

Turn off the phone (recommended)

Prepare a paper clip or needle

Lighting up the workplace

Check that the tray is not blocked with a cover-->

Installation of a new SIM-Maps: nuances for Redmi 9

When the tray is removed, you can start installing a new one. SIM-There are a few critical points here that are often overlooked:

1. Check the type SIM-maps: Redmi 9 It only supports nano-SIM (size) 12.3 × 8.8 If you have a micro-SIM or mini-SIM, it should be trimmed or replaced in the cabin of the operator.
2. Map orientation: there is a diagram on the tray showing how to properly stow the SIM, the contacts (the golden part) should be facing down, and the bevelled angle should coincide with the angle on the tray.
3. Hybrid slot: If you install a MicroSD, one of the most important is SIM-Select the priority slot (usually) SIM 1 has better network coverage).

Location of cards on the Redmi 9 tray:

Once the cards are installed, carefully insert the tray back into the phone before clicking, make sure it is fully in the groove - if there is a gap, then the cards are installed incorrectly or the tray is deformed.

Verification of new work SIM-mapping and troubleshooting

After you install the tray, turn on your phone and wait until you load. Now you need to check if the device recognizes the new one. SIM-This is the map:

1. Open the Settings. → SIM-maps and mobile networks.
2. Make sure that the operator name is displayed next to the SIM 1 or SIM 2.
3. Check the signal level (network icon in the top panel).

If the phone can't see SIM-map:

• 🔄 Restart the device – sometimes the system does not immediately recognize the new card.
• 📶 Check network coverage in your area (maybe the problem isn't the phone).
• 🛠️ Clear the contacts. SIM-cards and tray with dry fabric (without alcohol!).
• 🔧 Update: Go to Settings → The phone. → Updating the system.

If after all the manipulations SIM-If the card doesn't work there, try inserting it into another phone, and if it doesn't work there, it's the map, not the Redmi 9.

⚠️ Note: If after replacement SIM-The phone started to warm up or discharge quickly, this may indicate damage to the slot contacts.

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If the phone doesn’t see a new one SIM-90% of the time, the problem is incorrect installation, contamination of contacts or a non-activated card (especially if you have changed operator).

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

Even experienced users sometimes make mistakes that cause communication to fail or damage their phone, and here are the most common ones and ways to prevent them:

• 🚫 Using inappropriate tools (toothpicks, needles from syringes) risks breaking the tray locking mechanism. Solution: use only a metal clip or a special needle from the kit.
• 🔄 Installation SIM-Contacts should be facing down to the base of the phone. Solution: check the circuitry on the tray.
• 📱 Forced extraction of the tray when wedged, which can damage the plastic latches, so if the tray doesn't come out, contact the service.
• 📶 Ignoring the hybrid slot. Many people forget that when you install a MicroSD, you have one. SIM-Solution: Decide in advance which is more important, a second SIM or additional memory.

Another common problem is that you lose a paper clip at the most inopportune time, and to avoid that, you can store it in your phone case or on a magnet (like a refrigerator), and if you lose it, you can replace it.

• 📎 A stapler paper clip (untighten it).
• 🖊️ Needle from automatic handle (if it is metallic).
• 🔑 Key for screwdriver (suitable diameter).

If you change often SIM-maps (for example, when traveling abroad), consider the option-SIM. Unfortunately, Redmi. 9 It does not support electronic SIMs, but in new Xiaomi models (starting with the Redmi Note). 11) This function is already available.

More tips for owners of Xiaomi Redmi 9

Replacement SIM-Maps are not just a mechanical process, but also an opportunity to optimize the performance of the phone. Here are some useful life hacks that will come in handy after installing a new SIM:

• 📶 Network Priority Setting: Go to Settings → SIM-maps and mobile networks → [choose SIM] → Preferred type of network. For better speed, select 4G (preferably).
• 🔄 Rename SIM-If you have two SIMs, give them clear names (for example, "Worker" and "Personal.
• 📞 Call settings: in Settings → SIM-maps and mobile networks → You can choose which SIM to call from by default.
• 🌐 Roaming: If you travel frequently, turn off automatic roaming to save money: Settings → SIM-maps and mobile networks → roaming.

If you've installed a memory card, remember that it can be used not only to store files, but also to transfer applications.

1. Go to Settings → Applications → [select app] → Storage.
2. Click Change and select Memory Card.

Please note that not all applications support the transfer to SD-map.

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If, after the replacement, SIM-Your internet is missing, check it out. APN-They can reset when you change operator. APN come SMS when you first connect, but you can also find them on your operator’s website.

FAQ: Answers to popular questions