How to insert it correctly SIM-map 4A: photo-instruction

Smartphone Xiaomi Redmi 4A It remains a popular choice among users who value reliability and simplicity, but even with such a budget device, beginners may have difficulty installing it for the first time. SIM-Where is the slot? What's the size? SIM Why can't the phone see the network after installation? These are questions that are often heard on forums, and we've prepared a detailed guide to help avoid common mistakes.

Unlike modern flagships with hybrid slots, Redmi 4A It has a classic dedicated slot for two SIM-card SIM + But even here there are nuances: for example, not everyone knows what to activate the second. SIM It requires a reboot, and improper cropping of nano-SIM can damage contacts. In this article, we will analyze the step-by-step process, show the location of the slot in the photo, explain how to avoid breakdowns, and give tips on how to configure the mobile network after installation.

If you just bought Xiaomi Redmi 4A b/w or got it after a long downtime, check the configuration: the box should contain the key to extract the tray (a paperclip is also suitable, but more carefully with the power!). The device supports two nano-SIM (3FF) or one nano-SIM + memory card, but it is important to remember: the hybrid slot does not allow you to use two SIM and microSD at the same time.

Preparation: what size SIM-Cards are needed for Xiaomi Redmi 4A

The first and most important question is: SIM-I'll put a card in. 4A Supports only nano-sim format (3FF, 12.3 × 8.8 If you have an old micro-SIM (2FF) full-size SIM (1FF), You'll have to cut it or replace it in the operator's cabin, and notice that the wrong cropping can damage the chip, so you'd better use a template or order a new card.

To check the size of your SIM, compare it to a sample:

• 📏 Nano-SIM (3FF): 12.3 × 8.8 × 0.67 mm - suitable for Redmi 4A.
• 📏 Micro-SIM (2FF): 15 × 12 × 0.76 mm - requires pruning.
• 📏 Standard. SIM (1FF): 25 × 15 × 0.76 mm. Doesn't fit.

Important: Xiaomi Redmi 4A does not support eSIM, only physical nano-SIM cards. If you are switching from another phone that used micro-SIM, do not try to insert it without adapting: the tray simply does not lock, and contacts can bend.

Where is the slot for SIM-maps in Xiaomi Redmi 4A: photo

Slot for SIM-map 4A It's located on the left side of the device (when you look at the screen), and it's easy to recognize it from the small key hole and the characteristic slot:

So the tray is designed as a retractable module that is fixed by a latch, and you can fit in this.

• 📱 Two nano-SIMs (for two numbers).
• 📱 One nano-SIM. + microSD memory card (up to 256 GB).

Please note that if you use two SIM-The microSD slot will be locked! - Redmi's architecture is limited. 4A, You can't get around it.

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Turn off the phone before removing the tray – this will prevent accidental damage to the contacts when installing the SIM.

Step-by-step instruction: how to insert SIM-map 4A

Now, to the process itself, follow the instructions in strict order to avoid errors.

1. Turn off your phone. It's not necessary, but it's recommended for safety.
2. Find the key to remove the tray (it comes with it) If it is not available, use an unbended clip.
3. Put the key in the hole on the left side before you click. The tray will extend 2-3 mm.
4. Take the tray out with your fingers carefully - do not make any effort!
5. Place the nano-SIM in the appropriate groove (chip down, beveled angle to recess).
6. Put the tray back in before you click. Make sure it sits straight.

If the tray is not fixed, check:

• ❌ SIM The wrong side is set (turn over).
• ❌ The map did not enter the groove until the end (push to the end).
• ❌ There is already a microSD in the tray (remove it if you use two). SIM).

Frequent Mistakes and How to Avoid Them

Even with a simple procedure, users make mistakes that lead to network loss or phone breakdown.

⚠️ Attention: If after installation SIM The phone doesn't see the network, check if the card is activated at the operator. 4A no automatic setup APN — You will need to enter them manually (see section below).

Another common problem is that the phone sees SIM, but there's no network, and there are many reasons.

• 📶 The card is not activated (check with the operator).
• 📶 Wrong settings APN (You need to set it up manually).
• 📶 Flight mode is on (check in the notification curtain).
• 📶 Damaged contacts in the slot (diagnosis needed).

Setting up a mobile network after installing SIM

After successful installation SIM-Xiaomi Redmi cards 4A You may not be able to connect automatically to the network:

1. Turn on the phone and wait for the load.
2. Go to Settings. → SIM-maps and mobile networks.
3. Choose yours. SIM-map and activate parameters: 📞 Calls (voice). 🌐 Mobile data (Internet). 📶 Roaming (if necessary).

APN

To set up the APN:

1. Go to Settings. → SIM-maps and mobile networks → Access points (APN).
2. Click Add Access Point and enter your operator data (example for MTS): Name: MTS Internet APN: internet.mts.ru Proxy: not specified Port: not specified Username: mts Password: mts Authentication type: PAP
3. Save the settings and restart the phone.

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If the Internet doesn't work after setting up the APN, check if the mobile data is on in the notification curtain. Sometimes the problem is the trivial things!

What to do if Xiaomi Redmi 4A see SIM-map

If the phone is persistently not recognizing SIM-map, follow the algorithm:

1. Restart the device – sometimes a simple reboot helps.
2. Check the SIM installation: Take out the tray and make sure the card is flat. wipe the SIM contacts with a dry cloth (no alcohol!).

Check the SIM on another phone

Reset the network settings

Settings → System → Resetting settings → Resetting network settings

Update the PO.

Settings → About the phone → System update

⚠️ Note: If none of the methods worked, it may be damaged. SIM-A slot or a communication module, which requires a diagnostic at a service center, and don't try to disassemble the phone yourself, in Redmi. 4A plumes!

If the problem occurs after a fall or moisture, turn off the phone immediately and dry it in rice (at least 24 hours).

Advice on the use of the two SIM-maps in Xiaomi Redmi 4A

Redmi 4A supports Dual SIM Dual Standby (DSDS), meaning both cards are active but standby.

• ✅ You can take calls to both. SIM.
• ❌ During a conversation, one by one SIM second will be unavailable.
• ⚠️ Mobile Internet is only available on one SIM (selectable).

To set priorities:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select the Double SIM settings.
3. Install: 📞 SIM for calls (default). 📶 SIM mobile data. 🔄 Automatic network selection (recommended).

If you need to divide your contacts SIM-map:

1. Open the Contacts app.
2. Click on Contact → Edit → SIM to save.

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To quickly switch between SIMs when you call, hold the call button and the card selection menu will appear.

FAQ: Answers to Frequent Questions