Where and how to insert correctly SIM-Map in Xiaomi Redmi Note 8: tray, size, frequent errors

Xiaomi Redmi Note 8 remains a popular choice due to its price-performance balance, but even experienced users sometimes have questions about basic operations. SIM-At first glance, the procedure is simple, but there are nuances: from the type of cards supported to the location of the tray and possible errors when you first turn on.

In this article you will find detailed instructions with visual hints, a table of format compatibility. SIM, As well as answers to questions that often go unnoticed: what to do if the phone does not see the card, how to combine the two SIM And we'll also look at how the Redmi Note 8 differs from the Note 8 Pro in terms of slots, and that's important for owners who are switching from one model to another.

If you've just unpacked your smartphone or are planning to change carriers, bookmark this page, which will save you time and nerves. And for those who have already encountered problems, at the end of this article there's a section on typical faults and how to fix them.

1 Where is the slot for SIM-Maps in Redmi Note 8?

In Xiaomi Redmi Note 8 tray for the SIM-The map is located on the left side of the body when viewed from the front of the screen. This is a standard place for most Redmi models, but it is easy to miss because of the minimalist design.

To avoid confusing the tray with other elements (such as a microphone or speaker), note the small hole next to it is the SIM-eject tool. On some smartphones, the hole is illuminated in red or white, but in the Note 8 it is neutral, so in poor lighting it can be invisible.

Visual landmarks:

• 📍 Left face - between the volume buttons and the upper end.
• 🔍 Removal hole - diameter ~1 mm, deepened by 2-3 mm.
• 📏 Tray size — ~10×5 mm (only the end part is visible).

If you are holding your phone for the first time, compare it to the photo below (conditional diagram):

2. What kind. SIM-The card is supported by Redmi Note 8?

Xiaomi Redmi Note 8 It works exclusively with nano-SIM (format) 4FF, size 12.3×8.8 This is important because many users are habitually trying to insert micro-SIM (used in older models like the Redmi). 4X) Mini-SIM (Old Format).

If you have a different size card, you can cut it yourself (with a special stapler) or contact the communication salon - they will do it for free in 5 minutes. SIM-The card can lead to jamming of the tray or damage to contacts.

Supported formats:

• 📱 nano-SIM (4FF) — slot (SIM 1).
• 📱 nano-SIM (4FF) MicroSD is a hybrid slot (SIM 2).
• ❌ Micro-SIM (3FF) and mini-SIM (2FF) — unsupported!

The hybrid slot is a feature of the Redmi Note 8. It allows you to choose between the second one. SIM-I'll use a card or a memory card, but not at the same time. SIM MicroSD, you will need to use an adapter or cloud storage.

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Before pruning SIM-You can back up your contacts in the process, you can accidentally damage the chip, and the data will be lost.

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

Installation process SIM-It takes less than a minute if you do it in order. Here's a step-by-step algorithm for typical errors:

Step 1. Turn off the phone.

Redmi Note 8 supports hot replacement SIM (without turning off, we recommend turning off the power, which will prevent modem failures, especially if you install the card for the first time.

Step 2. Remove the tray.

• Take the SIM-eject tool from the kit (or unbended clip).
• Insert the tool into the hole on the end of the tray before clicking.
• The tray will be out on 2-3 mm - carefully pull it out with your fingers.

Step 3. Set it up. SIM-map

• Place the tray on a flat surface (such as a table).
• Place the nano-SIM in the appropriate groove with the contacts down.
• For the hybrid slot, select: second SIM microSD.

Step 4. Put the tray back in place.

• Make sure the cards sit tightly in the slots.
• Insert the tray back into the smartphone before clicking.
• Turn on your phone and check the network signal.

If you turn on the phone, you can’t see SIM-Go to the section ["What to do if the smartphone does not recognize the card"] SIM?"](#troubleshoot) (link to the section below).

4. the difference of the Redmi Note 8 from the Note 8 Pro in terms of SIM-slot

Externally, the Redmi Note 8 and Note 8 Pro are very similar, but they have different specifications, including support. SIM-Major differences:

Number of slots:

• Redmi Note 8: 2 nano-SIM + MicroSD (hybrid slot).
• Redmi Note 8 Pro: 2 nano-SIM + separate slot for MicroSD (3 slots!).

2. Support 4G:

• In Note. 8 both SIM-maps work 4G, But only one (the other one) is at the same time. 3G/2G).
• Note 8 Pro is possible to work two 4G SIM simultaneously 4G VoLTE).

MicroSD speed:

• Note 8: Supports cards up to 256GB (UHS-I).
• Note 8 Pro: Up to 512GB (UHS-II, faster reading/writing speed).

If you are planning to use two SIM-The Note 8 Pro will be more convenient, and the Note 8 will have to choose between the second. SIM memory-expansion.

5. Frequent mistakes and how to avoid them

Even with the seemingly simple procedure, users often make mistakes that lead to a failure. SIM-I'm going to take a card or damage to the tray. TOP-5 Problems and ways to prevent them:

1. Misdirectional orientation SIM-map

If you put the card up with the contacts, the phone won't see it. The tray usually has a diagram with the right location, but it's easy to ignore in a hurry.

2.Using a micro-SIM without an adapter

Some people try to insert micro-SIMs into a nano-SIM slot by cutting plastic with scissors, which is risky: plastic residues can get inside the phone or damage contacts.

3. Strong tapping on the tray

The tray must enter the slot smoothly, effortlessly. If it doesn't insert, check if the cards are correctly positioned. Forced pressure can break the fixation mechanism.

4.Forgot to turn off the phone

While the Redmi Note 8 supports a hot replacement, it rarely causes a crash. IMEI. It is better to be safe and turn off the device.

5 Dust or moisture in the slot

If the tray has not been removed for a long time, dust or oxidation of contacts may accumulate inside. SIM.

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If the tray is jammed, DO NOT try to pull it out by force! contact the service center - self-attempts often lead to damage to the motherboard.

6 What to do if the phone can’t see SIM-map?

After installation SIM-The phone does not recognize the card, act on the following algorithm:

Step 1. Reboot your phone.

Sometimes a normal reboot is enough for the modem to re-initiate the card. Press the power button and select Reboot.

Step 2. Check the tray.

• Take the tray out and make sure that SIM-card sits tightly in the groove.
• Blow the dust slot (for example, a can of compressed air).
• Check if there are any scratches or oxidation on the card contacts.

Step 3: Network settings

Go to Settings. → SIM-Maps and mobile networks and make sure that:

• SIM-card activated (slider in the position "On.").
• Selected the correct network profile (4G/3G/2G).
• There are no restrictions on roaming (if you are abroad).

Step 4: IMEI verification

If the phone doesn't see both SIM-The cards may have gone wrong. IMEI. To check:

1. Dial *#06# and you should display two IMEIs (one for each SIM).
2. If Null or Unknown numbers are replaced, restoration is required. IMEI (better off).

Step 5. Test another SIM-map

Put in a knowingly working one. SIM (If it is detected, the problem is in your card, contact the operator for a replacement.

If none of these methods worked, the cause could be a hardware malfunction (modem or antenna damage), which requires a diagnosis at a service center.

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Before visiting the service, make a backup of the data! Diagnostics may include resetting settings.

7. Compatibility with operators: what you need to know

Xiaomi Redmi Note 8 supports most Russian and foreign operators, but there are nuances that are worth remembering:

1. Frequency support 4G

The phone operates in the following ranges:

• 4G: B1/B3/B5/B7/B8/B20/B38/B40/B41
• 3G: B1/B2/B5/B8
• 2G: B2/B3/B5/B8

This means that it is compatible with MTS, Beeline, MegaFon, Tele2 and most virtual operators (Yota, Tinkoff Mobile, etc.), but in some regions (for example, in the Far East) rare frequencies can be used - check them with the operator.

2.VolTE and ViLTE

Redmi Note 8 supports voice calls 4G (VoLTE), but this function must be activated:

• The operator (for example, MTS it is turned on by default, Tele2 – on request).
• In the phone settings: Settings → SIM-maps and mobile networks → [choose SIM] → Enable VoLTE.

3. Working with eSIM

Xiaomi Redmi Note 8 doesn’t support eSIM — only physical nano-SIM. If you need an eSIM, consider newer models like Xiaomi 12T Or the Redmi Note 11 Pro.+.

4. Roaming.

When travelling abroad:

• Make sure that roaming is activated by the operator.
• In the phone settings, select network mode LTE/3G/2G (motor-car).
• Turn off Auto Network Selection and manually select a local operator if the automatic connection does not work.

FAQ: Answers to Frequent Questions

If your question is not covered in the article, check the official documentation of Xiaomi or contact the operator for support.