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

Xiaomi Redmi 4X (also known as the Mi 4X In some regions, it remains a popular budget smartphone even years after its release, and one of the first problems new owners face is installing it. SIM-It would seem that it could be easier? But ignorance of the nuances often leads to errors, from improper cropping of the card to damage to the tray. SIM redmi 4X, including support for two cards, format selection (Nano/Micro) Solving typical network problems.

Important: Xiaomi Redmi 4X supports two Nano-SIMs (or one SIM + microSD), but not all carriers work correctly in the slot for the second card. If you plan to use two SIMs, check compatibility with your provider in advance. Also note that some versions of the device (for example, for the Chinese market) may not support Russian LTE frequencies - we will discuss this separately.

Before you start, prepare:

• 🔹 Nano-SIM (or Micro-SIM with adapter if you don’t plan to trim)
• 📌 Paperclip or tool to extract the tray (goes complete with the phone)
• 🔋 Charger (it is recommended to charge the phone up to 30% before manipulation)
• 📱 Another phone (to check the performance) SIM pre-set)

1. Which one? SIM-The cards are supported by Xiaomi Redmi 4X?

The smartphone is equipped with a hybrid slot for two Nano-SIM (4FF) or one Nano-SIM + microSD card (up to 256 GB).

• 📱 Use two. SIM-Cards simultaneously (for example, for work and personal calls).
• 💾 Replace the second SIM MicroSD to expand memory.
• ⚠️ You can't use two. SIM + MicroSD is just one option at a time.

Important: If you plan to use two SIM-cards, make sure both are trimmed to Nano-SIM format (3FF) It can't physically fit in a tray without an adapter, and hand-trimming can damage the chip. If you only have a Micro-SIM, it's best to contact the salon for a replacement -- it's free while saving the number.

Supported communication standards:

• 🌐 2G: GSM 850/900/1800/1900 MHz
• 📡 3G: WCDMA 850/900/1900/2100 MHz
• 🚀 4G LTE: Band 1/3/5/7/8/38/40 (Depends on the regional version)

⚠️ Note: In the Chinese version of Redmi 4X (prefix CN In the article, there may be no support for Russian LTE-Band 7, 20. Check the labeling on the box or in the settings before buying (Settings) → The phone. → Version. MIUI). Global version (Global) works with all Russian operators.

2 Where is the slot for SIM-maps in Xiaomi Redmi 4X?

Unlike many modern smartphones, where the slot is moved to the top, in the Redmi 4X it is located on the left end (if you look at the screen with the front side), the tray has a small hole to extract - it is easy to miss, if you do not know where to look.

Visually determine the location of the slot can be on two grounds:

1. 🔍 On the left side of the phone there is a small circular hole (≈1 mm in diameter).
2. 📏 The tray is located approximately in the middle of the height of the body, closer to the back cover.

If you can’t find the slot, try flashlighting or comparing it to the photo below (shorthand):

[Screen]




───────────────




│ │ ← Slot extraction hole




│             │




│             │




───────────────

⚠️ Note: Do not confuse the hole for extraction SIM-It's a tray with a microphone that's on the bottom of the tray next to the charging plug, and trying to put a paper clip in the microphone could damage it!

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

Installation process SIM-maps in Xiaomi Redmi 4X no more 2-3 Important: You don't have to turn off your phone, but it's recommended if you're first manipulating a tray.

Turn off your phone (optional, but recommended)

Check the SIM format (should be Nano-SIM)

Prepare a paper clip or tool for extraction

Make sure there is no chip damage on the SIM

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Step 1. Find a hole to extract the tray on the left side of the phone. Insert a paper clip or a special tool (companyed with the phone) into it before clicking. The tray will extend 1-2 mm - gently pull it with your fingers.

Step 2. Look at the tray: it has two nests — SIM 1 (top) and SIM 2/ microSD (lower). If you have one SIM-map, put it in the SIM 1 is the main slot with the best network support. SIM Use both nests, but remember that SIM 2 may not support 4G firmware.

Step 3. Set it up. SIM-The card(s) is in the tray chip down, aligning the bevelled corner of the card with the same angle of the nest. Press the card with a slight force until the click, the card should sit in the groove and not hang around.

Step 4: Carefully insert the tray back into the smartphone to the full stop. Make sure it's logged in straight - skewings can damage the contacts. Once installed, the phone will automatically detect a new SIM (if it was on) or turn on with it after rebooting.

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If the tray is not inserted to the end, do not force! pull it out and check if it is installed correctly SIM-Frequent error: mixed sides (chip up instead of chip down).

4. How to activate SIM-map?

After the physical installation SIM-You need to activate the card in the phone settings. 4X automatically determines the new SIM, But sometimes manual adjustment is required – especially if the card has been previously used on another device.

Follow this algorithm:

1. Open the Settings. → SIM-maps and mobile networks.
2. Select Control. SIM-map.
3. Click on the Inactive SIM (it will be marked as “Disabled”).
4. Turn on the switch Enable and select the network type (4G, 3G or 2G).
5. If required, enter PIN-code (by default it is indicated on the plastic carrier) SIM-map).

If SIM-map not defined:

• 🔄 Reboot the phone.
• 📶 Check if your operator supports Redmi. 4X (This is especially true for MTS/Tele2 in remote areas).
• 🛠️ Clear the contacts. SIM-cards and tray with dry soft cloth (sometimes oxidation interferes with communication).
• 📱 Try inserting. SIM In another phone – if it doesn’t work there, the problem is in the card, not the smartphone.

5. Frequent errors when installing SIM in Redmi 4X

Even the most experienced users sometimes make mistakes that lead to network problems. TOP-5 The most common mistakes and how to avoid them:

Critical Mistake: If You Lose PUK-code and lock SIM-The card can only be restored by the operator with the passport. No "unlocking software" will help - it's a myth.

6.Can I use Micro-SIM in Redmi 4X?

Technically, but with reservations: Redmi 4X slot is designed for Nano-SIM only, so you will need to:

• 🔪 Cut the card to the size of Nano-SIM (risk of damaging the chip).
• 🔄 Use the adapter "Micro-to-Nano" (sold in the salons).
• 📱 Replace the card in the operator's office (free of charge while saving the number).

If you decide to trim the Micro-SIM yourself, follow these rules:

1. Use sharp scissors and a ruler for marking.
2. Do not cut the plastic close to the chip - leave a reserve of 0.5 mm.
3. Check the card’s performance on another phone before installing it in Redmi 4X.

⚠️ Attention: Homemade cropped SIM-If the phone stops seeing the network after pruning, clean the contacts of the tray with alcohol and check if there are any plastic burrs on the map.

7. How to set priority SIM-Call cards and mobile internet?

If you use two of them SIM-maps, Redmi. 4X Flexibly adjust which one will be used for calls, SMS It's convenient, for example, if one person is a data carrier. SIM — working (with unlimited calls), and the second – personal (with profitable Internet).

To change priorities:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Priority SIM-Call cards and indicate your preferred SIM.
3. In the Mobile Data section, select the SIM through which the Internet will work.
4. Activate the Allow Data Switch option if you want to automatically switch to the second SIM when you lose your network on the first one.

Additional settings:

• 📞 Calls: You can choose which one SIM call by default, or make a choice with each call.
• 💬 SMS: similar to the calls, it is indicated SIM outgoing.
• 🌐 4G/3G/2G: each SIM You can specify the preferred type of network (for example, for one leave only one network). 2G, save charge).

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Setting priorities SIM-So, the card can optimize the cost of communication, for example, you can use one. SIM only for the Internet, and the second for calls, avoiding overpayment for packages of minutes.

FAQ: Answers to Frequent Questions