How to insert it correctly SIM-Map Xiaomi Redmi 4: instructions with photos and videos

Xiaomi Redmi 4 is one of the most popular budget smartphones of the brand, released in 2016. Despite its age, the device is still actively used due to its reliability and the ability to install two devices. SIM-However, many users have difficulty with the first connection: where is the slot, what size is it? SIM How not to damage the tray during installation.

In this article, we will analyze all the nuances of the installation SIM-Redmi 4 cards (including Redmi modifications) 4A, Redmi 4 Pro and Redmi 4 Prime, show the location of the slot in the photo, explain how to properly pull out the tray without a clip, and what to do if the smartphone does not see the network after installation. SIM, what PIN-Enter the code at first turn on and how to activate 4G.

If you just bought Xiaomi Redmi 4 b/d or got it out after a long downtime – this guide will help you avoid typical mistakes and save time on finding a solution.

What SIM-cards supports Xiaomi Redmi 4: sizes and types

All Redmi 4 modifications (except Redmi 4A) feature a hybrid slot for two nano-SIMs or one nano-SIM + microSD.

• 📱 Use two nano-SIMs at the same time (Dual mode) SIM Dual Standby).
• 📱 Install one nano-SIM + microSD memory card (up to 256 GB).
• ❌ You can't use two. SIM + MicroSD at the same time, you have to choose.

Important: Redmi 4A has a separate microSD slot and supports two nano-SIM+ memory cards at the same time. If you have this model, please skip the warning below.

⚠️ Note: If you insert a microSD into a Redmi hybrid slot 4/4 Pro/4 Prime, second. SIM-The card will automatically shut down. To get it back, you have to physically remove the memory card.

Sizes of supported SIM-map:

If you have an old micro-SIM or a standard SIM, you can trim it to nano-size with a special pruning stack (sold in salons) or with template scissors, but we recommend that you contact the operator's cabin for a replacement - it is free and safer.

Where is the slot for SIM-Redmi 4 maps: photos and description

Xiaomi Redmi 4 slot for the game SIM-The map is located on the left end of the case (when viewed from the front of the screen), which is a small tray with a hole to extract:

To open the tray, you will need:

• 📍 Paperclip (company with phone) or any thin metal object (needle, unbended stationery clip).
• 🔦 Good lighting – the hole to extract is small, easy to miss.
• 🧲 Magnet (optional) – will help to hold the tray if it slips out of hand.

If you have lost your native paperclip, any alternative with a diameter of 0.5-0.7 mm will do. the main thing is not to use too thick objects (for example, toothpicks or spokes) so as not to damage the mechanism.

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Before removing the tray, turn off the smartphone or put it in flight mode. This will prevent accidental damage to the contacts. SIM-card-installation.

Step-by-step instruction: how to insert SIM-Map in Xiaomi Redmi 4

Follow this algorithm to install correctly SIM-map:

1. Turn off your smartphone. Press and hold the power button, then select Turn off. Wait for the screen to turn off completely.
2. Find a SIM slot. As mentioned earlier, it's on the left end. The clip hole is located next to the volume buttons.
3. Remove the tray. Put the paper clip into the hole and press slightly until the tray is extended 1-2 mm. Then gently pull it with your fingers.
4. Install. SIM-Put the nano-SIM in the tray with the contacts down, aligning the bevelled corner of the card with the same angle on the tray. SIM MicroSD or MicroSD use the second slot.
5. Put the tray back in. Carefully insert the tray into the smartphone before you click. Don't put too much effort into it!
6. Turn on the phone. Press the power button and wait for the system to load. SIM-The card is installed correctly, the network indicator will appear in the status bar.

After switching on the smartphone does not see SIM-map, check it out:

• 🔄 Correct installation (contacts should be directed downwards).
• 📶 Support for your carrier’s frequencies (Redmi 4 doesn’t have some band support) 4G Russia).
• 🔧 Network settings in Settings → SIM-maps and mobile networks.

Clean tray (no dust and debris)|SIM-map is trimmed to nano-size|The paperclip is thin and unbent|Phone is off or in flight mode-->

Frequent errors in installation SIM-maps and how to avoid them

Even experienced users sometimes make mistakes that lead to network problems, and the most common ones are:

1. The parties are confused. SIM-- Contacts. SIM They should be pointing down (to the back of the phone), and if you put the card upside down, the smartphone won't see it, and if you press it hard, you can damage the contacts.
2. Using a micro-SIM without an adapter. Some users try to insert a micro-SIM into a nano-SIM slot by cutting it with scissors. This often leads to contact closure or card reading problems. It is better to order a new nano-SIM from the operator.
3. If the tray doesn't come out when you press a paper clip, don't try to pull it out with pliers or other tools. This can break the mechanism. Try pressing harder or using a thinner paper clip.
4. Dust or moisture entering the slot. Before installing the SIM, inspect the tray for debris. If the contacts are oxidized or contaminated, wipe them with an alcohol wipe.

⚠️ Attention: If after installation SIM-The smartphone stopped turning on or constantly restarts, immediately remove the card and check it on another device.

If you suspect that the tray is damaged (for example, it does not fix in the slot or falls out), do not try to fix it yourself. Contact the service center - replacing the mechanism will cost less than repairing the motherboard due to a short circuit.

How to activate a mobile network after installation SIM-map

After successful installation SIM-In most cases, the Xiaomi Redmi 4 automatically detects the operator, but sometimes manual configuration is required.

Follow these steps:

1. Go to Settings. → SIM-maps and mobile networks.
2. Choose yours. SIM-card (if two of them).
3. Make sure the mobile data switch is on.
4. Click the Access Point Name (APN) and select your operator configuration (e.g., internet.beeline.com for Beeline). If the APN you want isn't on the list, add it manually.
5. For 4G Enable the preferred network type option → 4G/3G/2G (motor-car).

If the internet is not working, check:

• 📶 Signal Level (the state string must have at least 1-2 divisions).
• 💰 Account balance (sometimes operators block access with zero balance).
• 🔄 Flight mode (must be switched off).

For MTS, Beeline, MegaFon and Tele2, APN settings are usually set automatically. If you use a virtual operator (e.g. Yota or Tinkoff Mobile), you may have to enter the settings manually.

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If the smartphone does not see the network after installing the SIM, first check whether your operator supports the frequency Redmi 4. For example, in Russia, the smartphone operates on 4G frequencies: B3 (1800 MHz), B7 (2600 MHz), B20 (800 MHz). If your operator uses other bands (for example, B1 or B8), the speed of 4G will be limited or unavailable.

Can we use two? SIM-MicroSD cards and microSD cards simultaneously?

This is one of the most common questions Xiaomi Redmi 4 owners have.

• ✅ Redmi 4A: Yes, two nano-SIMs are supported. + MicroSD at the same time (single slots).

If you need both SIM-Cards and additional memory, consider the following options:

1. Use Google Drive (Mi Cloud) instead of microSD.
2. Buy it. OTG-adapter USB (But it's inconvenient for permanent use).
3. Replace one of the SIMs with an eSIM (if your carrier supports it).However, Redmi 4 does not have an eSIM module, so this option is not suitable.
4. Use a SIM with a lot of storage (some carriers offer cards with built-in memory, but this is rare).

If you frequently switch between two SIMs and a microSD, we recommend buying a two-way nano-SIM with a microSD adapter (sold on AliExpress) that allows you to insert a microSD into the slot of a second SIM, but requires accuracy when installing.

What to do if Xiaomi Redmi 4 doesn’t see it SIM-map

After installation SIM-Your smartphone won’t recognize it, follow the following steps:

1. Restart the phone. Sometimes the system doesn't immediately detect a new SIM. Turn it off and turn it on.
2. Check the installation correctly. Remove the tray and make sure that the SIM is inserted with the contacts down and fits tightly to the stops.
3. Clear the contacts. SIM-cards and trays with a dry cloth or an alcohol wipe. Oxidation or contamination may disrupt the connection.
4. Check the SIM on another device. Put the card in another phone. If it doesn't work, the problem is in the SIM (it may have been deactivated by the carrier).
5. Update the software. Go to Settings → About Phone → System Update and install the latest version of MIUI.
6. Reset the network settings. → SIM-maps and mobile networks → Resetting network settings.
7. Check the IMEI. Type *#06#. If the IMEI is missing or incorrect, this could be the cause of the problem (repair required).

If none of the methods helped, the module may have failed. SIM-The only thing that will help is the service center, and the cost of repairs is usually 1,000-2500. ₽ depending on the region.

⚠️ Note: If the smartphone has stopped seeing SIM after falling or getting moisture, don't turn it on! This can short circuit. SIM and battery (if possible), then take the device to the service.

FAQ: Answers to Frequent Questions