Xiaomiโs modern smartphones have become universal tools to replace wallets, keys and passes, centered around the NFC (Near Field Communication) module, which allows users to share data over short distances. Users often wonder how to quickly activate this feature to start using contactless payment or transfer files.
The process of turning on may vary depending on the version of the MIUI or HyperOS operating system, as well as the region for which the device is released. In some cases, the standard switch may be hidden or require additional security settings. Understanding these nuances will help to avoid confusion and save time when you initially set up the gadget.
In this article, we will discuss in detail all the stages of activation, configuration of payment systems and solving typical problems, you will learn not only where to look for an inclusion slider, but also how to ensure the maximum security of your financial data when using a smartphone.
Search and activate the module in the MIUI interface
The fastest way to enable wireless data is to use the notification curtain, which requires swiping your finger from the top edge of the screen down to open the Quick Access panel, and among the many icons, you need to find an icon that says NFC and click on it once to activate the function. If the icon is not on the first page, swipe left to open the additional pages of the Control Panel.
An alternative route is through the main settings menu, and owners of Redmi and Poco devices should go to the Additional Features section, where the switch is usually located. In Xiaomi flagship models, this item is often in the Connection and Sharing category or simply Connection category.
โ ๏ธ Note: If you canโt find the switch even after searching all the menus, itโs possible your smartphone model isnโt technically equipped with the module. NFC. Check the specification of the device on the official website or in the box.
Once the module is enabled, the system can suggest choosing the default payment app, which is a critical step because it determines which service will run when you bring your phone to the terminal, usually between Google Pay (where it works), Mi Pay or third-party banking applications.
Setting up payment systems and tokenization
The main reason for the technology's popularity is that it allows you to pay for purchases in one touch, which is not enough to just turn on the module, you need to configure the software part. In global versions of firmware, the main tool remains a service from Google, which requires a bank card to be linked.
The process of adding a card is called tokenization, and when you enter plastic data into an application, it's not stored in the phone's memory in the open, instead, a unique digital token is created, which is transmitted to the payment terminal, which provides a high level of security, because the seller never sees the real number of your card.
- ๐ฑ Open the Google Wallet or Mi Pay app depending on your regional version.
- ๐ณ Click the Add Card button and follow the instructions on the screen.
- ๐ Confirm possession of the card via SMS code or a call to the bank.
- ๐ Set a screen lock (PIN, pattern lock, or fingerprint) or the payment wonโt work.
It is worth noting that in some regions, Mi Pay may not support certain banks, whereas Google Pay has a wider partner base. If you are traveling, it is recommended to check the list of supported financial institutions in advance.
๐ก
For increased security when paying large amounts, you can temporarily turn off the โPay without unlockโ function in the NFC settings, so that each time you need a confirmation by face or finger.
Using a Smartphone as a Transport Card
Xiaomi smartphone owners can use the device not only to pay for goods, but also to travel on public transport. Card emulation allows the phone to simulate a Troika, Strelka or other regional transport cards, eliminating the need to carry additional plastic media.
To activate this feature, you need to go to the Mi Wallet app and select the Transport Cards section, where you need to select your city and type of card, and it is important to understand that not all models support emulation of all types of cards due to differences in the frequencies and protocols of encryption of chips.
| Type of card | Support for Mi Wallet | Region of utilization | Replenishment |
|---|---|---|---|
| Troika (Moscow) | Complete. | Russia | Online |
| Plantman (SPb) | Partial | Russia | At the cash register. |
| Oyster Card | No. | UK | N/D |
| Suica | Limited. | Japan | Online |
Replenishment of the balance of the transport card added to the phone usually occurs via the Internet. Funds are credited instantly, and to activate the new balance, it is enough to bring the phone to the reader in the subway or bus, even if the terminal is outside the range of the turnstile.
What to do if the transport card is not read?
File transfer and device pairing
While payment is the most popular feature, NFC is also used for fast file transfer and pairing with accessories. Android Beam technology (or its modern counterparts) allows you to transfer contacts, links to sites, photos and geolocation points with the simple touch of two smartphones.
To transmit data, both devices must have unlocked screens and an activated communication module. Put the back of the phones close to each other. After vibration and characteristic sound, data will start transferring via Bluetooth or Wi-Fi Direct, initiated by the Internet. NFC-marker.
In addition, the module makes it much easier to connect wireless headphones and speakers. Many audio devices Xiaomi and third-party manufacturers have a special label. Just touch the phone in this area, and the system will automatically start the search for the device and request pairing, bypassing a long search in the Bluetooth menu.
- ๐ง Headphones: touch for instant connection.
- ๐ธ Cameras: transferring photos to a smartphone for quick publication.
- ๐ Smart home: quick setup of new light bulbs and outlets.
- ๐ฎ Gamepads: interface controllers without delay.
Problems with detecting and reading labels
Sometimes users are faced with a situation where the phone stops seeing tags or payment terminals. Often the cause is a protective case. If the accessory has a metal plate for attachment in the car or too thick walls, it shields the signal. In such cases, you need to remove the case to check the health.
Another common problem is mispositioning: the NFC antenna in Xiaomi smartphones is most often located at the top of the back cover, next to the main camera module, and when paying or reading tags, you need to bring this area to the reader, rather than the center of the case.
โ ๏ธ Warning: If the phone is heated during use NFC, The module can automatically shut down to prevent overheating.
In rare cases, the failure can be software-based, such as cleaning the cache of the Android Pay service or resetting the network settings, and if nothing helps, it is possible that the antenna module is physically damaged, for example, after a fall or moisture.
โ๏ธ Diagnosing problems with NFC
Security and hidden settings
While wireless technology always carries potential risks, Xiaomi engineers have set up several layers of protection, and you can find the settings for the module, "Require Device Unlocking," if it is active, the phone won't make a payment if the screen is off or the device is locked, even if an attacker brings it to the terminal.
There is also the option to manage application access. From the Settings menu โ Connection and Sharing โ NFC โ Contact payments, you can choose which application is prioritized. This is useful if you have multiple banking applications installed and you want a specific one to run by default.
It is important to know that when you reset your smartphone to factory settings, all associated cards are removed from the device's memory for security reasons, and after reset, you will have to add them again, undergoing the verification procedure in the bank.
Check the list of devices you have accessed regularly and remove those you no longer use, which minimizes the risk of data leakage through vulnerabilities in older versions of the software.
๐ก
The main principle of NFC security is that the module only works at a distance of several centimeters, which physically eliminates remote reading of data by hackers.