Modern smartphones are no longer just phone and Internet devices, they have become digital wallets, passes and keys that we carry in our pockets. One of the most useful technologies in this context is NFC (Near Field Communication), and owners of Xiaomi and Redmi devices often wonder how to properly activate this module and start using contactless payment or fast pairing of gadgets.
The technology allows you to exchange data over very short distances, literally when devices touch each other, and this provides a high level of security, because an attacker will not be able to read your phone data from the other side of the room. On a Redmi Note or Xiaomi Mi smartphone, the implementation of this feature can have its own nuances, depending on the version of the MIUI shell or HyperOS.
In this article, we will take a closer look at how you turn on the module, configure payment systems, and solve common problems. You will learn where to look for hidden switches and how to make your phone work with payment terminals in the store. NFC-The antenna will help you use your smartphone as efficiently as possible.
Search and activate the NFC module in the system
The first step is always to check whether the module itself is in your device. Not all budget Redmi models are equipped with a short-range chip, so make sure that it is available in the specifications of your particular model on the official website. If technically a module is provided, you can activate it in several ways, which depend on your preferences in managing the smartphone.
The fastest method is to use a notification curtain. Swipe down from top to bottom across the screen to open the Quick Access bar, and find an icon that says NFC. If you don't see it among the first buttons, tap on a pencil or edit button to add a shortcut to a prominent place, which will allow you to turn the feature on and off in one click without going deep into the menu.
The more traditional way is through the system settings. You need to go to the Settings section. → Connection and Sharing (in some versions) MIUI It can be called simply "Connections." And here's the main switch that triggers it. NFC-It's in this menu that you also configure the security settings and the default application selection for emulation of maps.
💡
If you use contactless payment often, add a quick NFC widget to your desktop or curtain so you don’t look for it every time you set up.
Importantly, once the module is enabled, the system can request permission to use location data or install a secure item, which is a standard procedure for Android smartphones, necessary for the correct operation of payment tokens, and without confirming these requests, the terminal in the store may not see your phone.
Contactless Payment for Google Pay and Mi Pay
One of the main reasons users are looking for NFC information on Xiaomi is to pay for purchases with their phone, and various services are available for residents of different regions: somewhere dominated by Google Pay, somewhere by Mi Pay or banking applications that support Mir Pay.
Once you add a card to your bank or payment system application, make sure that this is the service you choose to use first. Go to the NFC settings and find Contact Payments or Touch Payment. From the list of available apps, select the one you want, such as Google Pay, which will prioritize the app you choose when you bring your phone to the terminal.
⚠️ Note: Contactless payment via Google Pay on new Xiaomi models may require an unlocked bootloader or patch installation, as Google’s security policy requires device certification.
When paying, try to keep the phone at the back closer to the reader, as the antenna is most often located at the top of the case or around the camera block. Do not remove the case if it is too thick or contains metal inserts that can shield the signal. A successful transaction is usually accompanied by vibration and an audible signal.
- 💳 Add the card to the bank application and go through verification via SMS.
- 📱 Install the payment system application (if required separately).
- ⚙️ Select the default application in the settings NFC.
- 🔒 Make sure your phone has a password or biometrics installed.
☑️ Pre-payment checks
File transfer and device pairing
The technology is not limited to financial transactions, it can quickly transfer small files, contacts or photos between smartphones, using the Android Beam standard (or its modern counterparts built into the system), the transfer process is simple: turn on NFC on both devices, open the desired file and hold the phones with the back sides to each other.
In addition to data transfer, the module is great at fast pairing of accessories. Headphones, speakers, fitness bracelets and smart watches Xiaomi often support instant connection. You do not need to search for a device in the Bluetooth list, wait for a search and enter the code. Just bring the phone to the headphones in the case, and the system will offer pairing.
The data transfer speed through this channel is relatively low compared to Wi-Fi Direct, so it is better to use other methods to transfer heavy video files. However, for business cards, links to sites or Wi-Fi settings, this is ideal, the system will understand the type of data and run the appropriate application to process it.
An interesting feature is to read information from different tags and maps, for example, you can quickly find out the balance of the transport card or read the encoded link from the advertising sticker. You just need to unlock the phone and bring it to the signal source, special applications are not always required, the system will suggest the action.
Use of the NFC-tagging
Owners of Xiaomi Redmi can significantly expand the functionality of the smartphone using programmable NFC-Labels. These are little chips that you can buy online and program to do certain things when you touch, like a tag on your desktop can put your phone in silent mode, and a tag by your bed can turn on your alarm clock and shut down all apps.
You use special applications to write scripts, like NFC Tools or built-in MIUI automation, and you create a task, you write it down on a chip, and then the phone responds to the touch instantly, and this is especially useful for motorists: the tag in the holder can include navigation, Bluetooth and music with a single touch.
| Script | Telephone action | Location of the tag |
|---|---|---|
| "Home." | Turn on Wi-Fi, volume 100% | Front door |
| "Sleep." | Alarm 7:00, "Do Not Disturb" mode | Bedside table |
| "Auto" | Turn on Bluetooth, GPS, Music | Torpedo of a car |
| "Guest" | Open a guest Wi-Fi profile | Living room |
Label writing is an irreversible process if the chip doesn't support overwriting. Be careful when creating scripts. Standard ones. NFC-marker NTAG213/215/216 They are the most common and compatible with the vast majority of smartphones, including Redmi.
NFC problems and how to solve them
Sometimes users are faced with a situation where the module stops responding or payment does not pass. The first reason is often a protective case. If it has a metal plate to attach to the car or just very thick walls, the signal may be blocked. Remove the case and check the module again.
The second common problem is software failure of the service, in which case it helps to reboot the device. If that didn't work, try resetting the network settings. Go to Settings → Connection and Sharing → Wi-Fi, mobile network and Bluetooth → Resetting. This will return the network settings to factory values without deleting your personal data.
⚠️ Note: When resetting network settings, saved Wi-Fi passwords and pairs of Bluetooth devices will be deleted, so they will have to be reconfigured.
It's also worth checking if the chip itself is physically damaged, because a severe impact or fall of the phone can cause the antenna module to detach from the inside of the case, and if the phone falls and the NFC stops working, you may need repairs at the service center.
What to do if the terminal writes "Map Error"?
Data security with NFC use
Security concerns many users, NFC technology is designed with data protection in mind: the range is only a few centimeters, making remote reading almost impossible, and when you pay with your phone, your real card number is not transferred to the terminal, instead using a unique token that is useless for fraudsters.
For additional protection on Xiaomi smartphones, you can configure payment confirmation, which means that even if the phone is unlocked, you will need a fingerprint or pin code to perform the operation, which is located in the payment app menu or in the security section of the system.
- 🔐 Use the lock screen (PIN, pattern lock, biometrics).
- 🚫 Do not keep scans of documents and CVV-gallery-code.
- 📲 Install antivirus and monitor application permissions.
- 👁️ Include a notification of all card transactions in the bank application.
You should be wary of so-called “electronic pickpockets,” although it is difficult to implement such an attack in practice. In theory, an attacker could try to read data from your transport card or loyalty card bonus if the phone is on standby with an active phone. NFC. However, the data of bank cards with a chip EMV copying in this way is not possible.
💡
The main principle of security is to lock the screen, NFC-tags and payment data are not available for reading by unauthorized devices.