Modern smartphones have long ceased to be just a means of communication, becoming universal tools for solving everyday tasks, and Xiaomi Redmi Note 8 Pro is no exception to this list. One of the key modules that ensures the convenience of interaction with the outside world is NFC (Near Field Communication), which allows you not only to contactlessly pay for purchases, but also to exchange data or read electronic tags. Owners of a popular model from the Chinese brand often face the need to properly configure this interface to avoid problems with reading cards or connecting accessories.
Understanding the principles of near-range contactless communication will help you to maximize the capabilities of your gadget, turning it into a digital wallet or a smart home remote control. Although the technology seems simple, there are certain nuances in the MIUI shell that require attention when you first activate. Let's take a look at all aspects of the operation of this module in detail, so that you do not have difficulties at the critical moment of payment in the store.
Arrangement of the antenna and physical activation of the module
The first step before using any wireless interface is to understand where the antenna is physically located in the device body. In the Redmi Note 8 Pro, the NFC module is integrated into the top of the rear panel, closer to the main camera, which is the standard solution for most smartphones in this class. When you try to count a card or connect to the terminal, you need to bring this section of the body to the reader, since the zone of confident reception of the signal here is quite limited and is only a few centimeters.
To enable the feature in the software of the Android operating system, you will need access to the Quick Settings Panel or the main settings menu, which can be done in two main ways: a top-down swipe to open the notification curtain or through the standard system settings application. It is important to make sure that the module is activated before you try to perform any operations, otherwise the device will simply not respond to external requests.
- 📱 Swipe down the screen, find the icon. NFC And touch it so that it will light up with blue.
- ⚙️ Go to Settings. → Connection and sharing → NFC and switch the switch to the "On" position».
- 🔍 Make sure that the value is selected in the “Security Item Position” menu HCE Wallet for the correct operation of payment systems.
- 📶 Check that the screen is unlocked, as for security reasons, card reading is often blocked on a locked device.
⚠️ Warning: If you use a protective case with a metal plate or magnetic holder in the area of the camera, this can completely block the signal.
After turning on, the system may suggest setting up additional settings, such as the mode of emulation of the card or data transfer via Android Beam (if the function is still supported in your version of the software), you should not ignore these settings, as they determine how the smartphone will behave when in contact with the outside world.
Contactless Payment via Google Pay and Mi Pay
One of the most popular features that users use to activate this module is the ability to pay for purchases in a single touch. To implement this feature, Google Pay was traditionally used on the Redmi Note 8 Pro, which required adding a bank card to the Google Wallet app (formerly Google Pay).
However, in the current environment, users from Russia and several other countries should take into account changes in the operation of payment ecosystems. Google Pay may not work with cards of some banks, so it is worth considering alternative options, such as Mi Pay or direct applications of banks that support HCE technology (Host Card Emulation).
☑️ Checking readiness for payment
It is important to understand the difference between tokenization and direct transfer of card data. When paying through NFC, the smartphone does not transmit the real number of your card, but generates a one-time token, which makes the transaction safe even in the event of a signal interception. To successfully pay, the terminal must support contactless payment technology, which is indicated by the corresponding icon on the device case.
⚠️ Note: When adding a card to the payment service, make sure that the device does not have superuser rights (Root) and the bootloader is not unlocked, as this may lead to the blocking of the payment function by the bank for security reasons.
If the automatic payment doesn't work, check in the NFC settings which application is selected for payment by default. Often, after installing a new banking application, the system switches priority to it, even though the user is used to using another service. You can switch the active application from the Touch and Pay menu.
Data transfer and tagging
Beyond financial transactions, NFC technology is great at quickly transferring small amounts of data between devices. Although the transfer speed here is lower than Wi-Fi Direct or Bluetooth, the advantage is instant pairing without the need to enter passwords or search devices for a long time. On the Redmi Note 8 Pro, this feature can be used to quickly send contacts, links to websites or small photos simply by attaching smartphones to each other.
Of particular interest is the interaction with active and passive NFC-Passive tags have no power source of their own and are activated only in the reader field, triggering pre-programmed scripts on the smartphone. For example, when you bring the phone to the label pasted at the front door, Wi-Fi and the “Do Not Disturb” mode can automatically turn on, and the alarm clock will turn on at the bed and the mobile network will turn off.
| Type of operation | Required SOFTWARE | Difficulty | Example of use |
|---|---|---|---|
| Payment for purchases | Google Pay / Mi Pay / Bank | Low. | Buying food at the supermarket |
| Device pairing | System (Bluetooth) | Low. | Connecting wireless headphones |
| Automation (Scenarios) | NFC Tools / Tasker | Medium | Starting the navigator in the car |
| Reading electronic tickets | Annex of the airline/RZD | Low. | Boarding a plane or train |
| Identification (key fob) | Specialized annexes | Tall. | Opening a smart door lock |
To write your own scripts to tags or read information from other people's tags, it is recommended to use specialized utilities such as NFC Tools. This application allows you to see technical information about the tag, its memory capacity and type, as well as write text data or links there. Be careful when writing, as some types of tags are disposable and do not allow you to overwrite information after the first use.
Technical details of recording on labels
Pairing with accessories and a smart home
In the ecosystem of Xiaomi and other electronics manufacturers, NFC is often used to instantly pair with peripherals. This is especially true for wireless headphones, speakers and wearables. Instead of going into Bluetooth settings, searching for a device in the list and entering a pin code, simply attach a smartphone to a special tag on the accessory. Redmi Note 8 Pro supports standard pairing protocols, which ensures compatibility with most modern devices.
As for integration with a smart home, the capabilities are hardware-specific. Many of the smart lights, sockets and sensors from Mijia or Yeelight have a lot of hardware. NFC-When you first turn on your device, Mi Home can automatically detect the nearby gadget and suggest adding it to the network by copying the configuration data you need, making it much easier to scale your smart home system.
- 🎧 Mi True Wireless headphones often have support for quick pairing via touch (requires support from the phone and the current version). MIUI).
- 🏠 Smart locks can be used NFC As one of the ways of authorization, emulating a virtual key on your smartphone.
- 📡 Xiaomi routers are sometimes equipped with a tag to quickly connect guests to Wi-Fi without entering a password.
- 🔋 Power Bank with NFC can transmit information about the state of charge or model when connecting the phone.
It's worth noting that it's critical to have a stable Internet connection when you first set up your smart home, and while NFC itself works locally, registering with a cloud account requires you to transfer data to a server, and if you have problems, try bringing your phone closer to your router or using mobile internet.
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For fast transfer of large files, use NFC only for “handshake” (pairing), and the data transfer itself will automatically switch to a high-speed Wi-Fi Direct or Bluetooth channel, which is much faster.
Diagnostics and solution of common problems
Despite the reliability of the technology, users of the Redmi Note 8 Pro can face a situation where the module stops responding or is not functioning stable. Most often the reason is not a hardware failure, but a software failure or a conflict of settings. The first thing to do is to perform a basic diagnostic: check whether the module is on in the settings, whether the signal is blocked by the case, and whether the function is operating in safe mode.
If your phone stops seeing cards or payment terminals, try resetting your network connection settings. This action will return your Wi-Fi settings, Bluetooth settings.
NFC
⚠️ Note: Resetting network settings will delete all stored Wi-Fi passwords and associated Bluetooth devices. Write down important passwords in advance or make sure you remember them before performing this procedure.
If software methods don’t help, and the phone doesn’t respond to tags at all (even when reading in special applications), you may suspect a hardware malfunction of the antenna or plume. In the Redmi Note 8 Pro, the NFC antenna module is often combined with the back cover or located on a separate board, and its damage is possible if you fall or unqualified repairs.
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If after resetting the settings and checking in safe mode, the module does not work, a hardware malfunction is likely, requiring diagnosis in the service center.