How to insert it correctly SIM-Map in the smartphone Redmi: instructions for all models Xiaomi

Xiaomi’s Redmi smartphones remain among the most popular devices on the market due to their combination of price, performance and functionality. SIM-cards, which may raise questions, especially for beginners or owners of hybrid models, where the slot is combined with a memory card. SIM at Redmi Note 12, Redmi 10, POCO X5 and other brand models, avoiding typical mistakes.

We will not only look at the standard procedure for different types of slots (nano-SIM, micro-SIM, hybrid), but also nuances that are often not mentioned in official instructions. SIM You will also find the current slot layouts for the latest Redmi models and tips for choosing the right tariff for two SIM-map.

If you have just purchased a new Redmi or are considering a change of operator, this guide will save you time and eliminate the need to contact the service center.

Types. SIM-cards in smartphones Redmi: what are and how to distinguish

Before you put it in. SIM-It is important to understand what type of card your Redmi model supports. Modern Xiaomi smartphones use three main formats:

• 📱 Nano-SIM (4FF) — most common standard (12.3 × 8.8 Used in all Redmi models with 2018 years, including the Redmi Note 11, Redmi 12 and POCO F5.
• 🔄 Hybrid slot - combines nano-SIM and microSD. Found in budget models (for example, Redmi). 10A or Redmi 9C). Allows you to choose: either two SIM-card SIM + memory-card.
• 📶 eSIM - virtual SIM, It is supported in flagships (for example, Xiaomi 13), but not yet common in the line of Redmi.

To determine the type of slot in your device, check:

1. Official documentation (box or Mi.com website).
2. Marking on the tray for SIM-Maps – usually the format supported.
3. Having a second microSD slot – if there is one, it’s a hybrid slot.

Important: Some models (like the Redmi Note 10 Pro) have two separate nano-SIM slots, but do not support microSD.

Preparation SIM-maps: cropping, adapters and compatibility check

If you SIM-The card is not the size of the card, it can be cut or an adapter can be used:

• ⚠️ Trimming — if you do it wrong, damage the chip, better use a special cutter or ask the operator for a new card.
• 🔄 Adapters – suitable for temporary solutions (e.g. micro-SIM in nano-slots), but can fall out when vibrating.
• 📡 Compatibility checks – some operators (e.g, Tele2) issue USIM-Cards that don’t work in older Redmi models (until 2019).

Critical information: in hybrid slots Redmi priority is given to the first SIM-card (slot 1) if you use two SIM, Make sure that the main (c) 4G) installed in the first slot - otherwise the Internet speed may be limited 3G.

Check the size of the card (nano/micro/standard)

Make sure the chip is not damaged.

Cut the card with a special tool only.

Clean the card contacts with dry cloth

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If you crop the card yourself, follow this pattern (for nano-SIM):

+---------------------+




|                     |




| [CHI] |




|                     |




+---------+-----------+




| 12.3 mm




+




8.8 mm

⚠️ Warning: Do not use trimming scissors - this almost always causes damage to the chip.Output: ask for a new nano-SIM from the operator (usually free when changing the tariff).

Step-by-step: how to insert SIM in Redmi

Installation process SIM-The cards are the same for most Redmi models, but there are nuances depending on the slot location:

1. Turn off your smartphone. This is a must to avoid damaging your contacts.
2. Find a slot for SIM-In most models, it is located on the left side (for example, the Redmi Note 12), but in some (for example, the Redmi). 9T) — top-up.
3. Remove the tray. Use a clip or a special key (comes included). Put it in the hole before clicking: ↓ Press to the end [=====] → The tray will extend.
4. Install. SIM-Put it down with the chip and the notch on the tray. For hybrid slots, prioritize (SIM microSD).
5. Put the tray back in. Press until you click, it should stand up straight, without any skewing.
6. Turn on your smartphone. Wait for the network to come on (it can take up to 2 minutes).

If the smartphone does not see SIM-map, check it out:

• 🔌 Installation correctness (chip down!).
• 📶 Network settings: go to Settings → SIM-maps and mobile networks → [Yours. SIM] → Network type and select 4G (preferably).
• 🔄 Rebooting the device (sometimes helps reset network settings).

💡

If the tray is not inserted to the end, do not apply force! SIM-And that's the problem, 90 percent of the time.

Location of SIM slots in popular Redmi models

In order not to look for a slot at random, use this table for current models:

Note: In models with a separate microSD slot (e.g. Redmi Note) 11S) two-way SIM-You have to choose between cards and memory cards at the same time.

⚠️ Note: Redmi Note 10 Pro and newer slot for SIM-The card is combined with a cooling system. Do not use metal objects (such as needles) to extract the tray, this can damage the heat pipes!

Frequent problems and their solutions

Even after the correct installation SIM-These are the most common and the ways to fix them:

1. The smartphone doesn't see SIM-map

• 🔍 Check if the card is active (call from another phone).
• 📱 Restart the device or turn on/off Flight Mode.
• 🛠️ Clear the contacts. SIM-slash cards (without pressure!).
• 🔧 Update: Settings → The phone. → Updating the system.

2. no network or weak signal

• 📡 Manually select the operator: Settings → SIM-map → [Yours. SIM] → Network operators.
• 🔄 Replace it. SIM-The card is another slot (if there are two of them).
• 📶 Check the settings. APN (For MTS, Beeline or MegaFon, they are usually installed automatically, but sometimes manual input is required.

3. SIM-map is determined, but does not catch 4G

• 📊 Check the coverage of the operator in your area (for example, at nperf.com).
• 🔧 Make sure that the network settings are selected 4G (LTE), not 3G.
• 📱 If your smartphone supports VoLTE, turn it on in your settings SIM-map.

If none of these methods worked, the problem may be a hardware malfunction (a slot or antenna is damaged), in which case, contact the Xiaomi service center.

Setting up two SIM-Maps: Priorities, Internet and Calls

One of the key benefits of Redmi is the support of two. SIM-But to do it right, you need to set your priorities right:

1. Choice SIM-Default cards. Go to Settings. → SIM-maps and mobile networks → Choice SIM-Default cards and indicate: 📞 SIM call-in; 📶 SIM mobile-internet; 💬 SIM for SMS.

4G setup.

If both SIMs support 4G, but the Internet only works on one, check:

Settings → SIM- of the → [Second SIM] → Network Type → 4G

Disable notifications.

To avoid confusion, turn off network change notifications for secondary SIM:

Settings → Notifications → Additional → SIM- maps

Traveller’s advice: if you use a local SIM-card abroad, turn off roaming on the main SIM, It's a way to avoid unexpected expenses:

1. Go to Settings → SIM-cards → [Major SIM] → Roaming.
2. Turn off the options Data in roaming and Calls in roaming.

💡

In hybrid slots Redmi priority is given to the first SIM-card (slot 1) If you care about speed 4G, set up the main SIM exactly.

Firmware Update and Settings Reset: When It Helps

If there's a problem with SIM-The card appeared after the software update or reset settings, try the following steps:

1. Update your firmware. Go to Settings → About Phone → Update your system and install the latest version of MIUI. Network bugs are often fixed in new builds.
2. Reset your network settings. This will delete the stored Wi-Fi networks, passwords and settings. APN, But it can solve the problem with SIM: Settings → SIM-map → Resetting network settings
3. Perform factory reset. Last measure! Pre-reverse data: Settings → Additional → Reset and Reset → Reset settings