How do you put it in? SIM-Map in Xiaomi Redmi Note 9: instructions with photos and nuances

Xiaomi Redmi Note 9 remains a popular choice among users due to the balance of price and functionality. SIM-This is a map that may raise questions, especially for beginners. SIM-Redmi Note 9 cards, including the nuances of the hybrid slot, the choice between two SIMs or a memory card, and typical errors that lead to a lack of network.

Many users face problems after installation: the phone does not see the SIM, shows “No service” or constantly re-requests. PIN-This is most often due to improper card trimming, contamination of contacts or incomplete fixation of the tray, and we will explain in detail how to avoid these problems and what to do if the SIM card does not work.

In the article you will find:

• 📌 The exact location of the slot for SIM-Maps in Redmi Note 9 (with photo)
• 🔧 Step-by-step instructions for installing nano-SIM and microSD
• ⚠️ Common Mistakes and How to Fix Them
• 📡 Tips for setting up a mobile network after installation
• 🔄 What to do if your phone doesn’t see your SIM card

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

In Xiaomi Redmi Note 9 slot for the SIM-The card is on the left side of the case, and it's easy to recognize by the small tray extraction hole. Unlike some Samsung or iPhone models, where the slot can be on the top or right, in the Redmi Note 9, it's always on the left, which is a unified solution for the entire Redmi line.

It is important to note that this model uses a hybrid slot: you can install either two nano-SIM cards or one nano-SIM. + MicroSD card (up to 512 GB), which means that you can't use two SIMs and a memory card at the same time, you have to choose between two SIMs and a memory card.

The outside of the tray looks like a small metal plate with slots for attaching cards.

• 📱 SIM 1 — The main slot (supports) 4G/VoLTE)
• 📱 SIM 2 or 💾 MicroSD – Second slot (choice)

⚠️ Note: Do not confuse the slot for SIM-plug-card IR-The port (infrared transmission) that is located at the top of the case!

2 Which ones. SIM-The cards are suitable for the Redmi Note 9

Xiaomi Redmi Note Smartphone 9 It only supports nano-SIM (format) 4FF, size 12.3 × 8.8 If you have a different size card (micro-SIM or mini-SIM), you will have to cut it or replace it in the operator's cabin. Using adapters or self-trimming without a template often leads to the following:

• 🚫 Loss of contact with the chip (the phone does not see the SIM)
• 🔌 Contact closure (constant reboot of the communication module)
• 📵 Mechanical damage to the slot

If you plan to use two SIM cards, consider the following limitations:

• 📶 Both SIMs support 4G, but VoLTE (voice through) LTE) works only SIM 1.
• 🔄 If you are actively calling on one SIM, the second one will not be available (no Dual VoLTE support).
• 📞 If you call often, it is better to place the main SIM in the SIM 1.

⚠️ Note: If you use a memory card instead of a second SIM, make sure it is formatted in the same format. FAT32 Or exFAT. NTFS unsupported!

3. Step-by-step instruction: how to insert SIM-map

Before installing, make sure the phone is turned off.Although the Redmi Note 9 supports hot replacement SIM-cards (without turning off), we recommend turning off the power to avoid failures in the communication module.

You'll need:

• 📱 Xiaomi Redmi Note 9 Phone
• 🔑 Paperclip or special key for extracting the tray (comes complete)
• 📇 nano-SIM card(s) or microSD card(s)

Turn off the phone (clip the power supply) + Volume up 5sec)

Check if you have a nano-SIM (12.3×8.8 mm)

Prepare a paper clip or key from the kit

Make sure there are no scratches or contamination on the map.-->

Step 1: Find the slot on the left side of the phone and insert the paperclip into the hole before the click. The tray should extend 2 to 3 mm - do not pull it by force!

Step 2. Take the tray out carefully and place it on a flat surface.

• 📱 SIM 1 - upper groove (closer to the camera)
• 📱 SIM 2 or 💾 microSD - bottom groove

Step 3: Install the nano-SIM card(s) or microSD in the appropriate slots. The card should be down the chip and the bevelled angle should match the tray shape. There is no strict orientation for the microSD, but the contacts should be down.

Step 4: Put the tray back into the slot before you click. Make sure it sits straight -- if the tray is skewed, the phone won't see the SIM.

Step 5: Turn on your phone and wait until the network is initialized. PIN-If the network does not appear after 1-2 minutes, restart the device.

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If the tray is not inserted to the end, check if the sides are not confused. SIM-Often users place the card up with a chip, so the contacts don't touch each other.

4. Frequent errors and how to fix them

Even with the right installation SIM-These are the most common situations and their solutions:

Problem 1: The phone can't see. SIM-card SIM-cards" or "Impermissible card").

• 🔍 Check if the card is correctly installed (chip down, beveled corner matches).
• 🧹 Clear the contacts. SIM-cards and tray with dry soft fabric (do not use alcohol!).
• 🔄 Try to move the card to another slot (if you use one SIM).
• 📱 Update your phone firmware: Go to Settings → The phone. → Updating the system.

Problem 2: Constantly asking PIN-code or network goes missing.

• 🔑 Make sure you enter the correct one. PIN (default is usually 0000 or 1234).
• 📡 Switch network mode manually: Settings → SIM-maps and mobile networks → Name of operator → Manual selection.
• 🔧 Reset network settings: Settings → System system → Reset → Resetting Wi-Fi, Mobile Network and Bluetooth.

Problem 3: Mobile Internet is not working (E or H icon)+ instead 4G).

• 🌐 Check if mobile data is enabled: Settings → SIM-maps and mobile networks → Mobile traffic.
• 📶 Make sure that the operator supports 4G in your region.
• 🔄 Reboot your phone or turn on/off flight mode.

5. Network setup after installation SIM-map

After successful installation SIM-You need to configure the network settings. By default, the phone should automatically connect to the operator, but sometimes you need to manually configure the phone.

Activation of the mobile Internet:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose the right one. SIM-card (if two of them).
3. Activate the mobile data switch.
4. In the section Access Points (APN) Check that your operator’s settings are selected (usually the settings are loaded automatically).

Set up calls and SMS:

• 📞 By default, calls are made with SIM 1.To change this, open the Phone app → ⋮ → Call settings → SIM-outgoing.
• 💬 For SMS settings are similar: Messages → ⋮ → Settings → SIM-map SMS.

Optimizing traffic consumption:

• 📉 Limit background traffic: Settings → SIM-maps and mobile networks → Transfer of data → Background data transmission.
• 🔄 Turn on Traffic Savings in Battery Settings.

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After installation SIM-The phone does not catch the network, first check if the mode is not turned on 2G This parameter may get lost after firmware updates.

6.Whether two of these may be used SIM-card and memory card simultaneously

No, in the Xiaomi Redmi Note 9, this is not possible due to the hybrid slot.

• 📱📱 Two nano-SIM cards (without microSD)
• 📱💾 One nano-SIM + microSD card

If you are critical to use both two SIMs and additional storage, consider the following alternatives:

• 🔄 Cloud storage: Google Drive, Mi Cloud or Yandex Disk (up to 15 GB free).
• 📁 OTG-Driver: Connect the flash drive through the adapter USB-C → USB-A (Supported drives up to 2 TB).
• 📱 Second SIM in electronic form: Some operators (for example, MTS or Tele2) offer the service "Second SIMKA" with a common number, but different rates.

If you are using microSD, consider:

• 💾 Class cards A1 or A2 (SanDisk Extreme is faster for installing applications.
• ⚠️ Not all applications can be transferred to a memory card – it depends on the developer’s policy.
• 🔄 Format the card as internal memory only if it is high-speed (otherwise the phone will slow down).

7 How to extract SIM-map from Redmi Note 9

Extraction SIM-The card is similar to the installation, but with some nuances:

1. Turn off your phone (but not necessarily).
2. Insert the paperclip into the slot hole and press until the click.
3. Take the tray out carefully and remove it SIM-card(s) or microSD.
4. Check if the contacts are dust trays or oxidation, clean them with a blower or soft cloth if necessary.

If the tray is not removed:

• 🔧 Check if the paper clip is bent. Use the original key from the set.
• 📱 Try to remove the tray with the phone on - sometimes the mechanism will unlock only in this case.
• ⚠️ If the tray is jammed, call the service.

⚠️ Attention: If you have extracted SIM-card during an active call or data transfer, this can cause the communication module to fail.

FAQ: Frequent questions on SIM-maps on the Redmi Note 9