Xiaomi’s modern smartphones have long since ceased to be just devices for calls and have become universal tools for everyday life. One of the key features that makes using the gadget as comfortable as possible is the module of short-range contactless communication, commonly known as NFC. This technology allows you to pay for purchases in stores, read electronic access cards and instantly exchange data with other devices without wires.
However, many users who first encounter the MIUI or HyperOS ecosystem can’t always find a switch to activate this feature. The Chinese shell interface often hides important settings in non-obvious places, which raises questions for beginners. In this article, we’ll take a look at all the ways to enable the module, set up contactless payment and solve typical problems that arise when working with the chip.
Understanding how this module works will help you not only make payments quickly, but also automate routine tasks, such as programming your phone to turn on an alarm when you walk up to a special tag on your bedside table, and how to make this technology work at full capacity on your device.
Check the presence of the module and its activation through the control panel
The first step before setting up should be to confirm that the appropriate hardware component is in your device. Not all budget Redmi or POCO models are equipped with a communication chip, so it is important to make sure that it is physically present. The easiest way to check this is through the official specifications on the manufacturer's website or in the Settings application → About phone → All the specifications where the corresponding item should be specified.
If the technical documentation confirms the presence of the module, the fastest way to start it is to use the notification curtain. To do this, you need to unlock the screen of the smartphone and swipe from the top edge of the display down to open the control center. In the list of fast icons, you should find an icon with the NFC logo and click on it to light up with an active color.
In some versions of the MIUI shell, this icon can be hidden in the secondary menu. To reveal the full list of widgets, you need to click on the edit button (usually a pencil or gear icon) and drag the desired element to the active panel.
- 📱 Swipe your finger down to open the notification curtain.
- 🔍 Find an icon with an inscription NFC fast-switch.
- ⚡ Click on the icon to activate the module (it should light up).
- 🛠 If the icon is not, click the edit button of the panel and add it from the list of available.
It's worth noting that once turned on, the module starts constantly scanning the surrounding space for tags, which can lead to a slight but still noticeable increase in power consumption during the day, so it's recommended that you turn off the function through the same control panel when you're not planning to make purchases or transfer data.
Deep customization through the system menu
More advanced settings, which are not available through the quick bar, are in the back of the system menu. This is where the user can choose the default application for processing payments, which is critical for the correct operation of Google Pay, Mir Pay or other banking services. The path to these settings usually looks like Settings → Connection and Sharing.
Inside this section, you need to find the item's position or contactless payment, and you'll be asked to select the main payment application from the list of installed ones, and if you use multiple banking programs, this choice will determine which card will be offered to the terminal when you bring the phone.
⚠️ Note: If you have changed your bank or installed a new payment app, be sure to go back to this menu and double-check the selection.The system can automatically reset priority to a standard application, which will cause the terminal in the store to stop reading the desired card.
Also in this section, a security setting that requires unlocking the screen to conduct a transaction is often hidden, an important option to prevent accidental debiting if the phone is just in your pocket next to the terminal, and it is recommended to keep this switch active to protect your finances.
For owners of devices with dual mode of operation (for example, when using two devices) SIM-It is important to understand that the communication module works independently of the SIM card you choose to call, you can take calls to one number, and pay for purchases through an account tied to another number or without a SIM card using only Wi-Fi.
Configuring contactless payment and working with cards
The process of adding a credit card to Google Wallet or similar applications on Xiaomi is standardized, but has its own nuances: After adding a card through a camera or manual data entry, the bank sends a request for verification, and successfully completing this process makes the card ready for use in terminals around the world.
However, under sanctions restrictions, users from Russia and Belarus may face the inability to add Visa and Mastercard cards directly, in such cases, intermediary services or special payment methods come to the rescue, which require separate configuration.
When paying, it is important to bring the device to the terminal correctly. The antenna area in Xiaomi smartphones is most often located at the top of the case, closer to the main camera, and this section should be brought to the reader at a distance of no more than 4-5 centimeters.
- 💳 Unlock the smartphone screen before bringing it to the terminal.
- 📍 Apply the top of the back of the device to the reader.
- ⏳ Wait for vibration or beep to signal successful payment.
- 🔒 Do not remove the phone from the case if it contains metal plates or magnets.
If the terminal is not responsive for a long time, you should not drive the phone randomly, it is better to position the device clearly and hold it for a few seconds, in case of repeated failures, it is worth checking whether the phone is in Aviapolet mode, which completely blocks the operation of wireless modules.
Using NFC to Transfer Data and Automation
The technology is not limited to financial transactions; it is great for fast file transfer between devices. In the Android ecosystem, this process is implemented through Android Beam technology (or its modern counterparts), to transfer it is enough to include modules on both devices, select a file (photo, contact, link) and bring smartphones back to each other.
Once the device is detected, the system will suggest that you confirm the data transfer, and the transmission speed over this channel is low, so the method is ideal for small amounts of information: business cards, links to sites or Wi-Fi settings. To transfer large video files, the phone will automatically suggest switching to Bluetooth or direct Wi-Fi connection.
How to transfer files without the Internet?
Another powerful possibility is to automate actions with programmable tags. You can buy a set of cheap tags. NFC-You can tag them, stick them in the right places, and write out the scenarios, for example, a tag in a car can automatically turn on Bluetooth, start the navigator, and put the phone in Do Not Disturb mode».
To create these scenarios, MIUI has built-in tools or third-party applications, which makes your smartphone a smart remote control of your environment, and just one touch is enough to run a complex algorithm of actions, which saves time and adds comfort.
Comparison of operating modes and compatibility
Understanding the different modes of operation of the module helps to more effectively manage device resources and compatibility with external devices. In modern smartphones Xiaomi supports several standards, which ensures work with most maps and tags on the market.
Below is a table describing the main modes and their purpose, so you can better navigate the technical details:
| Mode of work | Description of function | Example of use |
|---|---|---|
| Card Emulation (Card Emulation) | The phone is pretending to be a plastic card | Payment for purchases, travel on the subway |
| Reader (Reader/Writer) | The phone reads the data from the tag | Reading smart price tags, starting tasks |
| Peer-to-Peer | Data exchange between two phones | Transfer of contacts, photos, links |
| Host Card Emulation | Card emulation without using Secure Element | Banking applications, virtual keys |
The card emulation mode is the most commonly used in everyday life, and it makes your Xiaomi look like a regular plastic bank card to the terminal, in which data security is ensured by a secure element or software emulation via HCE.
Reading mode is useful for interacting with smart homes or advertising campaigns. Manufacturers often place tags on appliances for quick setup or on posters to navigate to a site. Your phone can read this data instantly, without having to open a browser or scan. QR-code.
Solving common problems and diagnosis
Despite the stability of the system, users may encounter situations where the module stops responding or payment does not pass. Often the cause is a software failure, which is solved by simply restarting the device. If the restart does not help, it is worth checking whether the case is blocking the signal.
Metal cases, magnetic clasp cases or too thick protection can shield the signal, making communication impossible. In such cases, you need to remove the case and try again, and make sure that there are no foreign objects on the back of the phone, such as rings holding directly above the antenna.
☑️ Diagnosing problems with NFC
If the problem persists, it may be an application conflict: Try clearing the cache of the application through which payment is made or reinstalling it. In rare cases, resetting network settings helps, but this action will remove stored Wi-Fi passwords and associated Bluetooth devices, so it is worth resorting to it last.
⚠️ Note: When resetting your network settings, all stored Wi-Fi passwords will be deleted.Make sure you remember the password from your home network so you don't go without internet after the procedure.
In some cases, especially on global firmware, there may be problems with Google Pay certification, which is solved by checking for root rights (which should not be) or hiding them through Magisk if the device has been modified.
Data security in the use of technology
The security of contactless payments is a concern for many users, with NFC technology having built-in security mechanisms that make interception extremely difficult for attackers, and a short range (a few centimeters) physically limiting the attacker’s capabilities.
Also, when you pay through Google Pay or Mir Pay, your real card number is not transferred to the terminal, instead using a unique token, a one-time digital code, and even if hackers somehow intercept this signal, they will not be able to use it to re-transfer or restore the card number.
💡
Never leave your phone with the screen unlocked unattended, as in some settings, payments (without a pin code) can be made automatically.
It's also important to keep track of which applications have access to the NFC module, and you can have a permission list in your privacy settings, and if an unknown application requests access to a security element, you should consider removing it and checking the device with an antivirus.
Regular update of the operating system MIUI HyperOS is critical, because updates often contain security patches that close vulnerabilities in wireless interfaces. Ignoring updates can leave you with no security_device_ vulnerable to new types of attacks.