How to activate SIM-Xiaomi Redmi Note 9 map: a complete guide with photos and tips

Xiaomi Redmi Note 9 is still a popular choice due to the balance of price and characteristics, but even experienced users sometimes have difficulties with activation. SIM-Unlike modern eSIM models, it uses a physical slot, and the procedure for setting up the mobile network has nuances - especially if you turn on your phone for the first time or change the operator.

In this article, we will not only discuss the basic installation procedure. SIM-maps, but also common errors that result in a lack of network (for example, incorrect choice of card type or conflict with settings) APN). You will learn how to distinguish between SIM problems and firmware failures, which settings to check first and what to do if the phone does not see the network after activation. SIM + memory-card.

What? SIM-The card supports Xiaomi Redmi Note 9

The Redmi Note 9 is equipped with a hybrid slot, which means the possibility of combinations:

• 📱 Two nano-SIMs (4FF) — for two numbers at the same time (Dual) SIM).
• 📱 One nano-SIM + microSD (up to 512GB) – if memory is given priority.

Importantly, the SIM2 slot also supports memory cards, but you can’t use two SIMs and a microSD at the same time. If you need two numbers and additional memory, you’ll have to choose between buying a model with a large built-in drive or using cloud services.

Supported communication standards:

Note: some carriers (such as Tele2 or Yota) may require manual APN setup to run 4G, as more in the problem solving section.

Preparation for activation: what to check before installing SIM

Before inserting the card, follow these steps to avoid typical errors:

Make sure the phone is turned off

Check the SIM type (should be nano-SIM 4FF)

Clean the slot from dust with a soft brush

Prepare a paper clip for the tray removal

Check the coverage of the operator network in your area-->

Pay special attention to the status of contacts SIM-If they are scratched or contaminated, the phone may not recognize the card. Wipe the contacts with dry cloth without pile (for example, microfiber for glasses).

⚠️ Warning: Do not use alcohol or liquids to clean the contacts, this may damage the protective coating. If the card was in water, dry it for at least 24 hours in rice or silica gel before installation.

If you are switching from another phone, don’t remove the SIM from your old device until you activate it in a new one. Some carriers (like MegaFon) may lock the card when switching between gadgets frequently for a short time.

Step-by-step instructions: how to insert and activate SIM-map

Follow this algorithm to set the SIM correctly:

1. Turn off your phone. Press the power button and select Turn off from the menu. Wait for the full shutdown (the screen must go out).
2. Remove the tray for the SIM. Find a small hole on the left side of the phone next to the volume buttons. Insert a clip (or a special key from the kit) before clicking - the tray will extend 2-3 mm. Carefully stretch it to the end.
3. Install. SIM-Put the nano-SIM in the tray with the contacts down, aligning the bevelled corner of the card with the tray angle. SIM MicroSD or microSD use the second slot (note the tags). SIM1/SIM2 tray).
4. Put the tray back in. Make sure the cards don't protrude beyond the edges of the tray. Put it in your smartphone before you click (the characteristic fixation sound should be heard).
5. Turn on the phone. Press the power button for 2-3 seconds. When the system boots, a notification will appear. SIM-map.

If the status bar displays a SIM icon after turning on, but there is no network, wait 1-2 minutes - the phone can automatically connect to the operator. If this does not happen, go to the next section.

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If the tray is not fixed or dangling, check if dust has entered the slots. Gently blow the slot with compressed air (for example, a can of keyboard cleaning).

Setting up a mobile network after activating SIM

In most cases, the Redmi Note 9 automatically detects network settings, but sometimes you need to manually configure it.

1. Go to 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 switch is active.
4. In Network Type, select 4G (recommended) or 3G if 4G is unstable in your area.
5. If there is no internet, click Access Points (APN) and check your settings (more on this below).

For calls and SMS, no additional settings are usually required, but if you can't call, check:

• 📞 Dialing mode: c Settings → Additionally. → The mode of the set should be Tonal (for Russia).
• 📞 Call forwarding: disable all forwardings in Settings → Call forwarding if they have been activated previously.

Problem Solving: The phone can't see SIM-map

After installation SIM-Redmi Note 9 card does not have a network or the phone does not recognize it, use this table for diagnostics:

If the problem is with APN settings, do the following:

1. Go to Settings. → SIM-maps and mobile networks → [yours SIM] → Access points (APN).
2. Click Add APN and enter your operator's settings. For example, for MTS: Name: MTS APN: internet.mts.ru Proxy: not specified Port: not specified Username: mts Password: mts Authentication type: PAP APN type: default,supl
3. Save the settings and restart the phone.

⚠️ Warning: If the network is lost after the firmware update, check the baseband version. Type ##4636## in the dialer and select Phone Information. If the Baseband version line is empty or contains unknown, you need to flash the modem over.

Features of working with two SIM-cards

The Redmi Note 9 supports Dual SIM Dual Standby (DSDS), meaning both cards are active at the same time, but while talking on one SIM, the second one will not be available.

• 🔄 Switching by default: in Settings → SIM-The cards can be selected which one SIM call-in, SMS and mobile Internet by default.
• 📶 4G only one SIM: If both cards are supported 4G, Only one can work in this mode (the second will automatically switch to the new one). 3G/2G). Select priority. SIM customized.
• 🔋 Saving Charge: Turn off mobile data on the second SIM, If you don’t use it for the internet, you’ll reduce your battery consumption.

To change the default settings:

1. Open the Settings. → SIM-maps and mobile networks.
2. Press the right one. SIM-map, SIM1).
3. In the Default section, select: 📞 Calls - for outgoing calls; 💬 SMS — message-post; 🌐 Mobile data for the Internet.

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If you travel frequently, set up roaming in advance: in Settings → Mobile Network → Roaming, turn on the option Data in roaming (check the fares with the operator!).

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when activating the SIM in the Redmi Note 9.

• 🚫 Using micro-SIM without adapter: the slot only supports nano-SIM. If you have a card of another format, cut it with a special stapler or contact the operator's salon.
• 🚫 Installation SIM Slots off: if you are using SIM2 For a memory card and then try to insert it. SIM, The phone won't see it. Reboot the device after the configuration change.
• 🚫 Ignoring updates: outdated firmware can cause modem malfunctions. Check the relevance of the software in Settings → The phone. → Updating the system.

Another common problem is conflict. IMEI. If you see a message that is invalid IMEI or IMEI: null, which means that the modem data has erased (often after a failed update or reset). IMEI You can use the engineering menu:

1. Enter the dial number ##3646633##.
2. Go to Connectivity → CDS Information → Radio Information.
3. In the field AT+ enter a command SIM1: AT +EGMR=1,7,"yours_IMEI_1" for SIM2: AT +EGMR=1,10,"yours_IMEI_2"
4. Reboot the phone.

⚠️ Attention: Recovery IMEI It requires knowledge of the original numbers (they are listed on the phone box and under the battery). IMEI This can lead to a network blocking!

FAQ: Answers to Frequent Questions