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

Xiaomi’s Redmi 9 remains one of the most popular budget smartphones even years after its release, but many users are struggling to install it for the first time. SIM-cards: the tray is not removed, the SIM is not recognized or the phone asks to restart. SIM-Redmi 9 cards, including nuances with hybrid slot, nano-SIM trimming and troubleshooting.

Redmi 9 design involves using a hybrid slot that supports either two nano-SIMs or one nano-SIM + microSD card. This creates confusion among beginners: how to place cards correctly so as not to damage contacts? We will show a step-by-step process taking into account all the technical features of the model, as well as give tips on choosing an operator and setting up mobile Internet.

Preparation: which SIM-The cards are suitable for Redmi 9

Before inserting the SIM, make sure it meets the requirements of the smartphone. Redmi 9 supports only nano-SIM (4FF format, size 12.3×8.8 mm). If you have an old micro-SIM or a full-size SIM, it will have to be trimmed or replaced in the cabin of the operator.

The important thing is that the smartphone runs on 2G/3G/4G networks, but it doesn't support 5G — that's a hardware limitation, and no firmware can get around it. If you want support for fifth networks, consider newer models like the Redmi Note 11 or the POCO X5.

• 📱 Format SIM: nano-SIM only (4FF). Micro-SIM and Standard SIM They're not gonna do without pruning.
• 🔄 Hybrid slot: You can install either 2 nano-SIM or 1 nano-SIM + microSD (up to 512 GB).
• 🌐 Supported networks: GSM 850/900/1800/1900, WCDMA B1/B2/B4/B5/B8, LTE FDD B1/B3/B5/B7/B8/B20.
• ⚡ Internet speed: up to 150 Mbps (LTE Cat.4) well-covered.

If you are planning to use two SIM-Note that the second SIM card does not support 4G — It will only work on networks. 2G/3G. This is a limitation of the MediaTek Helio processor architecture. G35, redmi-mounted 9.

Where is the slot for SIM-maps in Redmi 9

In Redmi 9, the tray for SIM-The card is located on the left end of the case (if you look at the screen with your face), it is easy to identify by the small hole for the clip-extractor (it comes with your smartphone). If you lose the clip, any thin metal wire or unbended stationery clip will do.

Don't confuse the SIM slot with a microphone hole (at the bottom) or a headphone jack (top end). Trying to insert a paper clip into these holes can damage the internal components!

⚠️ Warning: Do not use sharp objects (knives, toothpicks, pins) to remove the tray, which can damage the slot's sealing ring, causing dust and moisture to enter the body.

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

Now, let's get to the process. Follow the instructions carefully to avoid mistakes.

1. Turn off your smartphone.This is not necessary, but it is recommended to avoid failures during initialization. SIM-map.
2. Take a clip-extractor (or its analogue) and insert into the hole on the tray before clicking.
3. The tray will extend a few millimeters - carefully stretch it to the end.
4. Put the nano-SIM in the appropriate groove with the contacts down: 📶 Slot 1 (top): main SIM (supportive 4G). 📶 Slot 2 (bottom): second SIM (only 2G/3G) microSD.

Make sure that the sim is tightly in the groove and does not protrude beyond the edges.

Insert the tray back before the click. Don't push too hard -- it should come in smoothly.

Turn on your phone and wait for the network icon to appear (usually it takes 10–30 seconds).

If, after insertion, SIM-The phone does not see the card, check if the memory card is installed in slot 2 - in a hybrid tray they do not work simultaneously!

Clean tray (no dust/garbage)|SIM-map is trimmed to nano-SIM|Contacts SIM scratchless|Slot 1 is used for the main SIM (4G)|Phone off (recommended)-->

Frequent Mistakes and How to Avoid Them

Even with the seemingly simple process, many users make mistakes that lead to network problems.

• 🔄 Slots are mixed up: if you insert the main SIM In slot 2, it will not work in the 4G. Always use Slot 1 for the main SIM.
• 📵 Incorrect pruning: if the nano-SIM is cut curved, the contacts may not touch the connector.
• 🔋 Insert with the phone on: sometimes this causes an initialization failure. Reboot the device if the SIM is undecided.
• 🚫 MicroSD and the Second SIM Simultaneously: either one or the other works in a hybrid slot.

After installation SIM-The phone says "No service" or "SIM-The card is not supported, try it:

1. Reboot the smartphone.
2. Check if the SIM is inserted correctly (contacts should be clean).
3. Manually select the operator in the settings: Settings → SIM-cards and mobile networks → Network selection.
4. Update the software of the smartphone (sometimes SIM bugs are fixed in new versions of MIUI).

⚠️ Attention: If after insertion SIM-The phone stopped turning on or gives an error "SIM-The card is damaged, remove it immediately, and it may be due to moisture or metal shavings that have closed the contacts.

How to cut SIM-Nano-SIM card for Redmi 9

If you only have a micro-SIM or a standard SIM, you can trim it to a nano-SIM yourself, which requires a trimming template (available in phone repair kits) or sharp scissors. Here's a step-by-step process:

1. Put it down. SIM-map to template so that contacts match the markup for nano-SIM.
2. Spend a marker on the boundaries of the future nano-SIM.
3. Carefully trim the excess plastic with scissors or a stationery knife.
4. Then, make sure to clean the edges with sandpaper (so that there are no burrs).
5. Check that the contacts are not damaged and insert them into the smartphone.

If you are not sure of your skills, it is better not to take risks - contact the communication salon, where you will be replaced for free SIM-card nano-SIM. the cost of a new SIM usually does not exceed 100-200 rubles.

💡

Before pruning, take a photo of the original SIM-If something goes wrong, you can retrieve the number from the cameraman's cabin photo.

Setting up a mobile network after installing SIM

After successful installation SIM-The cards are left to set up mobile Internet and calls, and in most cases, the settings are loaded automatically, but sometimes you need to manually configure the settings.

To check and change the network settings:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose the right one. SIM-card (if two of them).
3. Make sure the mobile data and call switches are active.
4. In the Access Points (APN) section, check that the correct parameters of your operator are selected (they are usually downloaded automatically).

If the internet isn’t working, try adding APNs manually:

1. Click "Add Access Point."
2. Enter your operator’s data (you can find them on the official website).
3. Save the settings and restart the phone.

Example of APN for MTS:

Name: MTS


APN: internet.mts.ru




Proxy: Not specified




Port: Not specified




User name: mts




Password: mts




Type of authentication: PAP

⚠️ Note: If after setting up APN The Internet still does not work, check the account balance – some operators block traffic with zero or negative balance.

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If the smartphone does not see the second SIM-card, make sure that the second slot is not disabled in the settings: Settings → SIM-maps and mobile networks → Second second SIM-map.

What to do if Redmi 9 doesn’t see it SIM-map

If after all the manipulations the phone persistently does not recognize SIM-The problem could be in the smartphone or the SIM itself:

If none of the methods worked, it may have been damaged. SIM-A tray or a communication module in a smartphone, which requires a diagnostic at a service center, the average cost of repairing a slot for a smartphone. SIM in Redmi 9 - from 800 to 1500 rubles.

Before the service visit:

• 🔍 Check the SIM on another phone (to rule out malfunctioning).
• 🔄 Try resetting your network settings: Settings → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.
• 📱 Update your firmware to the latest version (sometimes bugs with the software) SIM patch-fix).

FAQ: Answers to Frequent Questions