How to set up NFC on Xiaomi Redmi 9: a step-by-step guide

Smartphones are no longer just call devices, becoming powerful tools for everyday tasks, where contactless payment is a central feature. Owners of the popular budget Xiaomi Redmi 9 often wonder how to activate this feature for use in stores and public transport. Despite the fact that the device belongs to the affordable segment, engineers have equipped it with the necessary module, but its work may require manual adjustment.

The configuration process doesn’t take much time, but it requires care, as in the MIUI shell some switches can be hidden or malfunctioned due to software failures. In this article, we’ll take a look at all the nuances, from checking for a chip in your particular modification to solving complex card emulation problems. You’ll learn how to properly configure Android Beam and understand why sometimes the phone stops seeing terminals.

To start with, make sure your firmware version is up to date, as older builds of the operating system may contain bugs that block wireless interfaces. Often users try to adjust the payment, forgetting that it requires not only the module on, but also the installed application of the bank or payment system. It is important to know that some global versions of Redmi 9 NFC module is physically absent, so checking the specification of your model is the first must-do step.

Check for NFC Module in Redmi 9

Before you start setting up, you need to make sure that your device even has the required chip, as Xiaomi has released different versions of the Redmi 9 for different markets. In some regions, the model was sold in a stripped-down version, where the functionality of wireless communication was limited to only Wi-Fi and Bluetooth. You can check the hardware by software without disassembling the case of the smartphone.

The quickest way is to go to the system settings and search by parameter. Type the word "NFC" into the search bar at the top of the settings screen. If the module is present, the system will prompt you to go to the corresponding menu or immediately turn on the function. If the search did not find anything, it can mean that there is no chip or a serious failure in the driver.

You can also use third-party diagnostic tools that display complete hardware information, and applications like CPU-Z or AIDA64 will clearly list the supported sensors, and if you don't list Near Field Communication, you won't be able to program-activate a non-existing module.

• 📱 Go to Settings. → Connect and share and look for a switch.
• 🔍 Use the search bar in the settings for quick access to hidden menus.
• 🛠 Install a diagnostic app to see a list of all sensors.

⚠️ Note: If the switch did not appear in the task manager or in the quick settings menu after all the checks, most likely, your modification of the smartphone does not have this module.

Basic activation and selection of payment application

Once the module is confirmed, the next step is to activate it correctly and select the main payment application, and in the MIUI shell, a separate system service is responsible for this, which manages the security of transactions, and it is important not only to turn on the switch, but also to specify the priority application that will be launched when you bring the phone to the terminal.

To start, go to the Connect and Sharing menu and find the appropriate item. Once the slider is turned on, the system can request confirmation or suggest choosing the default application, and this is where it is determined which service (such as Google Pay, Samsung Pay or a banking application) will handle requests from readers.

You should pay special attention to the "Contact Payments" setting, which is the default app you choose from, and if you use multiple credit cards or apps, that's where priority is set, and without that step, the phone can just hum as it reaches the terminal, but not offer to unlock the screen for payment.

• 💳 Open the Settings. → Connection and sharing → NFC.
• ✅ Activate the slider and select "Security Item Location".
• 🏦 Install your banking application as the primary default.

⚠️ Note: When choosing a payment app, make sure it is fully compatible with your version of Android.Outdated versions of banking software may not work properly with new security updates from Google Play Services.

Setting up Google Pay and Bank Cards

Integration with payment systems is a key step in requiring strict security measures: Google Pay and similar services require that the device is not rooted and the bootloader is blocked. If you have previously tried to modify the system, the payment function may not be available until the return of the stock firmware.

To add a card, open the payment system app and press the add button. You will need to take a picture of the card or enter data manually, and then confirm the account ownership via SMS or a call to the bank. The verification process takes place on the bank side, and the phone acts only as a secure carrier of tokenized data.

It's important to understand that tokenization replaces the real card number with a virtual code that is transmitted to the terminal, which means that even if the data is intercepted, attackers will not be able to use it, but this technology requires a stable Internet connection at the time of adding the card and periodic synchronization.

• 🔐 Make sure there are no superuser rights on the phone (Root).
• 📸 Add the map to the app by following the instructions on the screen.
• 📞 Follow the confirmation procedure through the bank.

File Transfer and Android Beam

While in-store payment is the most popular feature, the module also allows you to quickly transfer files, contacts and links between devices. Android Beam technology (or its modern counterparts) uses near-facing to establish a handshake, after which data can be transmitted via Bluetooth or Wi-Fi Direct. This is especially convenient when you need to quickly transfer a photo to a friend’s phone without searching in messengers.

To transfer a file, open a gallery or document, select the Share option, and find the Android icon. Put the backs of your smartphones close together. Devices vibrate to confirm the connection, and data transfer will begin. Transfer speed depends on the file size and Bluetooth version, but for small volumes it is a very fast method.

It’s worth noting that newer versions of Android have eliminated Beam’s functionality in favor of Quick Share, which also uses NFC for initial pairing. On Redmi 9, this process is automated: you don’t have to manually turn on Bluetooth, the system itself activates the necessary modules when you try to transfer.

Using NFC for Smart Home and Tags

Xiaomi ecosystem owners can use the NFC Not just for payments, but also for automating smart home scenarios. NFC-Labels can be programmed to do certain things, like turn on the alarm, start the navigator, connect to Wi-Fi, or activate the In-the-Car profile, which makes the smartphone a powerful environmental management tool.

To program tags, you use special applications like NFC Tools, you write a command to the tag, and then you bring the phone to the sticker, you run the script, for example, a sticker at the front door can automatically put the phone on silent mode and turn on the lights in the hallway if you have compatible lamps.

And you can also use NFC to pair smart home devices quickly. Many Mi Smart Speaker speakers or Mi True Wireless headphones support fast touch connectivity. You don't have to look for a Bluetooth-listed device, just attach the phone to a tag on your gadget, and pairing happens automatically.

• 🏠 Program the tag to launch the script "I'm at home".
• 🔗 Use for fast pairing of headphones and speakers.
• ⚙️ Create complex chains of action through an automation application.

Diagnostics and solution of common problems

If a function is no longer working or is not running smoothly, the first thing to do is to eliminate software conflicts. Often, cached system service data or conflicting applications cause failures. Rebooting the device helps in 50% of cases, but if the problem persists, a deeper diagnosis is required.

Check if you have a thick case with metal elements installed. The metal shields the signal, and the antenna located at the top of the Redmi 9 body cannot penetrate the protection. Also make sure that you bring the phone to the terminal with the correct zone - usually the area of the main camera.

If the system fails completely, you may need to reset your network settings, which will not delete your personal files, but will return your Wi-Fi, Bluetooth, and NFC settings to factory values, and you will have to re-enter your wireless passwords after the reset, but this often restores the functionality of the communication modules.

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If the terminal can't see the phone, try removing the case and holding the device on the other side, and sometimes the thickness of the protective glass or cover is critical to the reading range.

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Most of the problems with NFC Redmi 9 is solved by restarting the device or reconnecting SIM-maps, as the antenna is often tied to the communication module.

Questions and Answers (FAQ)