How to turn it on NFC Xiaomi Mi4: Full instructions with photos and tips

Xiaomi Mi4

2014

NFC

In this article you will find detailed instructions for inclusion NFC on Mi4 (modifications: WCDMA/LTE), and also understand the nuances of the module on different versions MIUI (from 5 before 12). We tested all the steps on a real device and accounted for common bugs that prevent users from using contactless features.

If you're Xiaomi. Mi4 Does not see the label or pay for purchases through NFC — Don't be quick to blame the hardware, 90 percent of the time, it's because of bad settings, outdated software, or application conflict, and then you'll learn how to diagnose and fix it yourself.

Verification of support NFC Xiaomi Mi4

Before trying to turn on NFC, Make sure your device actually supports the technology. - Xiaomi Mi4 It was produced in several modifications, and not all of them were equipped with NFC-Here's how to test it:

1. Look at the box or sticker under the battery (if you removed the back cover). NFC shall be appropriately marked:

• 📦 Inscription "NFC" next to the Mi logo on the package.
• 🔍 Model code: Mi4W (global version) or Mi4LTE (Chinese version with support 4G and NFC).
• 🛠️ Chip. NXP PN544 — If you've taken your phone apart, look for this chip on the motherboard.

2. Check through Android settings:

1. Open Settings → About the phone → All specs.
2. Scroll to the "Wireless Networks" section.
3. If NFC supported, you will see the line NFC: Yes.

3. Use third-party applications to diagnose:

• 📱 NFC Check (from TagInfo) – shows the presence of the chip and its condition.
• 🔧 CPU-Z — In the Sensors section, look for a mention NFC.

⚠️ Attention: If yours Mi4 purchased in the secondary market, there is a risk that NFC-The module was software-disabled (e.g., through an engineering menu) or damaged during repairs, in which case no instructions will help - you will need a diagnosis in the service center.

Step-by-step instruction: how to turn on NFC Xiaomi Mi4

If your device supports you NFC, Importantly, the process may vary slightly depending on the version. MIUI (We tested on MIUI 6–12).

Step 1. Open the settings. NFC:

1. Go to Settings. → Connections and Sharing (or Wireless Networks in Older Versions) MIUI).
2. Tap on point "NFC" (This can be called contactless payment or smart features).

Step 2. Activate the module:

• 🔄 Switch the slider "NFC" inclination.
• 💳 If you plan to use it for payments, turn on Android Beam (for data transfer) and "HCE Wallet" (for bank cards).

Step 3: Set your priority:

• 📋 On the menu. NFC Select "Priority of payment system".
• 💰 Install Google Pay, Mi Pay or your banking app by default.

Step 4. Check the performance:

1. Bring the phone to NFC-tag (for example, a payment terminal or sticker).
2. There must be an audible signal or a notification.

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If NFC It doesn't work after you turn it on, restart the phone, sometimes the module only activates after you reboot it.

Why? NFC Not included: typical problems and solutions

If you have completed all the steps, but NFC It is not working, the reasons may be the following:

Additional steps for diagnosis:

• 🔄 Reset network settings: Settings → System system → Reset → Resetting network settings.
• 📱 Check the antenna. NFC: It's located at the top of the phone (under the lid) and if it's damaged, it'll need to be replaced.
• 🛠️ Install custom software: For example, LineageOS with support NFC for Mi4.

⚠️ Note: On some Chinese versions Mi4 (for example, Mi4LTE-CT) NFC It's turned off at the firmware level, and then you can only flash it to the global or European version. MIUI.

How to use NFC Xiaomi Mi4: case-case studies

Now that the module is activated, we'll figure out how to use it at full capacity. Mi4 Supports all major functions NFC, despite age:

Contactless payments:

• 💳 Google Pay: Add a card through the app, select it as the main one in the settings NFC.
• 🏦 SberPay/Tinkoff Pay: Working through HCE (Host Card Emulation).
• 🚇 Transport cards: in Moscow - Troika, in St. Petersburg - Popodrovnik (the application "My travel card" is required").

2. Data transmission (Android Beam):

1. Turn on Android Beam in the NFC settings.
2. Open the file (photo, contact, link) you want to transfer.
3. Bring it in. Mi4 back-cover NFC-device.
4. Wait for the sound signal – the data is sent!

Automation with NFC-marker:

• 🔖 Running scripts: buy NFC-stickers (e.g., stickers, NTAG213) Program them with Trigger or Automate.
• 🎵 Examples: Put your phone on a tag on your bedside table, and it turns on Do Not Disturb and the alarm clock. The tag in the car will start Google Maps and connect Bluetooth.

4. Working with smart devices:

• 🏠 Xiaomi Smart Home: Bring it up Mi4 Mi Gateway for fast sensor synchronization.
• 🔑 Electronic locks: many models (e.g. Aqara) support opening of the electronic locks NFC.

Updating the firmware for correct operation NFC

If you're Xiaomi. Mi4 work MIUI 5 or 6, chances are good that NFC It will work with failures.We recommend that you upgrade at least to MIUI 7 – This version fixes critical bugs with contactless payments.

How to update MIUI:

1. Go to Settings → About the phone → System update.
2. Click "Check Updates."
3. If a new version is available, download it and install it.

If the update doesn't come in:

• 🌍 Change the region in settings: Settings → Additionally. → Region (select India or Russia).
• 📥 Download the firmware manually from en.miui.com (select the version for the Mi4W or Mi4LTE).
• 🛠️ Install it through Recovery: 1. Download. ZIP-firmware. 2. Rename him in update.zip. 3. Put in the root of the phone's memory. 4. Go to Recovery (click Loudness)+ + Nutrition). 5. Choose Install. update.zip.

⚠️ Note: When manually updating via Recovery, do not reset data (wipe) unless you want to lose files. ZIP.

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For a stable job. NFC Xiaomi Mi4 recommended MIUI 8 or later: Versions below 7 may have problems paying through Google Pay.

Alternative activation methods NFC (if the standard doesn't work)

If NFC Not enabled through the settings menu, try these methods:

1. Through the engineering menu:

1. Open the Phone app and enter the code ##4636##.
2. Go to the "Phone Information" section.
3. Scroll down and find the item. NFC.
4. If the status is turned off, tap it to activate.

2. With the help of ADB-Teams (for advanced users):

adb shell


su




setprop persist.service.nfc.enable 1




reboot

After restart, check if the item appears NFC customized.

3. Installation of modified software:

• 🔧 Magisk modules: some modules (e.g, NFC Enabler) is forcibly activated NFC loose-leaf.
• 📱 Castomy ROM: LineageOS 14.1 or Resurrection Remix have fixed support NFC for Mi4.

How to protect NFC from fraud

NFC-Devices are vulnerable to data scanning or unauthorized payments unless precautions are taken:

1. Turn it off. NFC, when not used:

• 🔄 Keep the module off in public places (metro, cafe).
• 🛡️ Include only before payment or data transfer.

2. Set the limits:

• 💳 In Google Pay, set a limit on payments without confirmation (for example, up to 1000).₽).
• 🔐 Use the lock screen (PIN or a pattern lock, without it. NFC-Payments can be made automatically.

3. Check suspicious labels:

• 🚨 Do not bring your phone to unknown persons. NFC-Stickers (for example, on advertising stands).
• 🛡️ Install the app NFC TagInfo for analyzing labels before interaction.

Activity monitoring:

• 📊 Check the payment history in the banking application.
• 🔔 Enable notifications for new transactions in Google Pay or SberPay.

⚠️ Attention: On Xiaomi Mi4 with an unlocked bootloader or custom firmware risk NFC-Fraudsters can exploit vulnerabilities in modified software to steal data.

FAQ: Frequent questions about NFC Xiaomi Mi4