NFC on Xiaomi Redmi 9C NFC: full instructions for setting up and using

Xiaomi Redmi 9C NFC

contactless

All stages of NFC configuration

NFC (Near Field Communication) in Redmi 9C NFC runs at 13.56 MHz and supports ISO 14443 Type A/B standards, which ensures compatibility with most banking terminals and smart devices. But to work correctly, it is not enough to just turn it on in the settings - you need to correctly configure the security profile, link payment cards and take into account the features of the MIUI firmware. Next, you will find step-by-step instructions with visual hints, compatibility tables and solutions to typical problems.

Why NFC may not work for Xiaomi Redmi 9C NFC

Before you start setting up, it’s important to rule out the common reasons why an NFC module is not functioning, and most often the problem isn’t hardware, but software limitations or user missteps.

First, check the firmware region of your device. - Xiaomi Redmi 9C NFC firmware (CN) or (IN) may have limited support NFC-Payments due to local regulations, for example, in Chinese versions. MIUI Mi Pay is only available with reference to Chinese bank cards, the solution is to install a global (Global) or European one (EEA) firmware through Fastboot.

Second, make sure that the smartphone has the current version of MIUI. In older builds (below MIUI 12.5) may be missing drivers for proper operation of the NFC antenna. Update the system through Settings → About phone → System Update.

• 🔄 Outdated firmware: MIUI 12.5 does not support all functions NFC.
• 🌍 Inappropriate region: Firmware for CN/IN They can block payment services.
• 📵 Hardware damage: Falling or getting moisture could damage the antenna NFC (located under the back cover next to the camera).
• 🔒 Google Pay Limits: The service may not work if the device unlocks the bootloader or installs root.

⚠️ Note: If you have previously unlocked a bootloader on Redmi 9C NFC, Some banking applications (such as SberBank Online or Tinkoff Pay) may refuse to work with the bank. NFC-The only way to restore functionality is by locking the bootloader again.

How to enable NFC on Xiaomi Redmi 9C NFC: step-by-step instructions

The NFC module takes less than a minute to activate, but requires precise follow-up. On the Redmi 9C NFC, the function is hidden in the wireless menu, and its location may vary depending on the version of MIUI.

Open Settings and go to Connections and Sharing → NFC. If the item is not in the main menu, use the search bar at the top of the screen (enter “NFC”). Slider “NFC” to the position “On.” After activation, the icon with waves will appear next to you – this means that the module is ready to go.

For convenience, add an NFC shortcut to the Quick Settings panel. Fly the notification curtain down twice, tap the pencil icon (Edit), and drag the NFC icon to the active area. You can now turn the module on/off with a single touch.

Check the MIUI version (not lower than 12.5)

Ensure there is no physical damage to the antenna

Activate mobile internet or Wi-Fi (needed to download payment services)

Update the Google Pay app (if you plan to use payments)

-->

• 📱 Quick turn on: Twice swipe your finger over the top of the screen and tap the icon NFC.
• 🔍 Search for function: If NFC not available in the menu, update the firmware or reset the network settings (Settings) → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth).
• 🛠️ Diagnostics: To check the operability of the module, install the application NFC Tools from Google Play and scan any NFC-tag (e.g. transport card).

Contactless payments via Google Pay and Mi Pay

The primary use of NFC on smartphones is mobile payments, and the Redmi 9C NFC has two major services available: Google Pay (for international cards) and Mi Pay (for Chinese banks).

For Google Pay:

1. Install the app from Google Play.
2. Open it and click "Add map".
3. Scan the map with the camera or enter the data manually.
4. Confirm the addition via SMS or push notification from the bank.
5. Install Google Pay as the default payment app in NFC settings.

For Mi Pay (for firmware only with China region):

1. Update the Mi Pay app via the App Store (in Chinese firmware).
2. Attach a bank card from a Chinese bank (for example, ICBC or China Construction Bank).
3. Activate the Quick Pass function in the application settings.

⚠️ Note: When using Google Pay on Redmi 9C NFC With the unlocked bootloader, some banks (for example, Sberbank or Tinkoff) can block the ability to add cards.

Critical feature: on the Xiaomi Redmi 9C NFC, the NFC module supports card emulation only in HCE (Host Card Emulation) mode, which means that if the phone is dead or turned off, payment via NFC will not be possible - unlike devices with a separate chip (for example, Samsung Pay).

💡

Before making your first NFC payment, add Google Pay to the battery optimization exceptions (Settings → Battery → Battery Optimization → All Apps → Google Pay → No Limits) to prevent the service from being turned off spontaneously.

Data transfer and automation through NFC-tag

In addition to payments, NFC on Redmi 9C NFC allows you to transfer files between devices and automate tasks using special tags. For example, you can program a tag to turn on Wi-Fi when you touch or start the navigator in the car.

To transfer files (photos, contacts, links) use the Android Beam function:

1. Activate NFC on both devices.
2. Open the file you want to send (such as a photo in a gallery).
3. Combine the back panels of smartphones (NFC antennas are located next to the camera).
4. Wait for the beep and confirm the transmission on the screen.

To work with NFC-tag:

1. Buy empty tags (such as NTAG213 or NTAG215) on AliExpress or electronics stores.
2. Install the NFC Tools or Trigger app.
3. Select an action (e.g., “Enable Bluetooth” or “Open URL”).
4. Hold the phone to the tag for recording.

• 📁 File Transfer: Only works between Android 4.0 devices+ and on NFC.
• 🔄 Automation: Tags can be programmed to run scripts (e.g., enable silent mode in the office).
• 🚗 Use in the car: Plug the tag on the phone holder, so that when you touch Google Maps or Yandex automatically starts.

Optimizing NFC: Saving battery and eliminating lags

The NFC module consumes minimal power in standby mode, but when used actively (such as when scanning tags), battery consumption can increase by 5-10%.

• ⚡ Turn it off. NFC, When not needed (through the Quick Settings Panel).
• 🔋 Add to the exceptions: In the battery settings, mark Google Pay and NFC Service as an application without restrictions.
• 📉 Update drivers: In rare cases, lags NFC It's a conflict-related issue. Install the latest version. MIUI.

If NFC is unstable (for example, payments are not triggered the first time), try:

1. Clear the cache of the NFC Service application (Settings → Applications → Application Management → NFC Service → Clear the cache).
2. Reset network settings (Settings → System → Settings Reset → Reset settings Wi-Fi, mobile network and Bluetooth).
3. Check for metal covers or stickers – they can shield the signal.

💡

NFC on Xiaomi Redmi 9C NFC does not support the background for emulation of cards (unlike Samsung Pay), which means that the screen must be turned on and the phone unlocked to pay.

NFC Security: How to Protect Data from Fraudsters

NFC technology is considered safe because of its short range (up to 10 cm), but fraudsters can exploit vulnerabilities in software or social engineering.

• 🔐 Turn it off. NFC In public places, if you do not use it.
• 🛡️ Set up a lock: In Google Pay, activate the request PIN-Fingerprint or code for each transaction.
• 📵 Do not store sensitive data on NFC-tags (such as passwords or card numbers).

For additional protection:

1. Install the NFC Secure app to monitor suspicious scan attempts.
2. Check your transaction history regularly in the banking application.
3. Do not use NFC to pay at unknown terminals (skimming risk).

⚠️ Attention: On Redmi 9C NFC With an unlocked bootloader, attackers can theoretically intercept data NFC-If you use mobile payments frequently, we recommend that you return the device to a stock state.

Alternative ways to use NFC on Xiaomi Redmi 9C NFC

In addition to standard functions, NFC can be used for non-obvious tasks:

• 🎮 Gaming controllers: Some wireless gamepads (e.g, 8BitDo) plugged in NFC.
• 🔑 Smart locks: Modern electronic locks (such as Yale or August) support opening using the help of a smart lock. NFC-smartphone.
• 📦 Logistics: Scanning NFC-tags on parcels for tracking delivery (Cainiao applications or Russian Post).
• 🎟️ Electronic Tickets: Storage and presentation of tickets to the movies or concerts through Google Pay.

For experiments with NFC-Automation: Try the Tasker app + plugin NFC Task Launcher. You can configure it, for example:

• Automatically turn on Driving Mode when you touch the tag in the car.
• Sending SMS with coordinates when scanning the tag on the keys (useful for tracking losses).

💡

If you use NFC frequently for automation, buy waterproof tags (NTAG216 in silicone case) that can be attached to keys, a bicycle or a bag.

FAQ: Frequent questions about NFC on Xiaomi Redmi 9C NFC