How to connect NFC to Xiaomi Redmi 9C: the full guide

Budget smartphone owners often face functional limitations that aren’t always obvious when buying a device. The Redmi 9C, launched in 2020, has become a popular choice thanks to its autonomy, but its hardware stuffing has its own peculiarities. One of the most talked-about topics among users is the possibility of using Near Field Communication technology for contactless payment.

Unfortunately, the situation with this module is ambiguous. In the global versions of the smartphone that have officially been shipped to most countries, the NFC chip is physically absent from the board. This means that software activation through the standard settings menu is impossible, since the system has nothing to interact with. However, enthusiasts often look for ways to circumvent these restrictions using engineering menus or installing special modules.

In this article, we will discuss in detail how to check for a module in your device, what to do if it is hidden software, and what alternative payment solutions exist. We will look at the real technical aspects of Mi Pay and Google Pay on Android, so you can make an informed decision about the feasibility of modifying the system.

Testing of hardware support technology

Before you start any software manipulation, you need to make sure that the antenna and controller are physically present on your device's board, different regions of delivery may have different versions of motherboards, and you should start with the built-in diagnostics of the MIUI system.

Open the Phone app and type in the special code ##6484##. This action will trigger a hidden engineering test menu. In the list that appears, you need to find an item associated with NFC. If there is no such item or it is displayed in gray, the probability of the module being absent is extremely high.

⚠️ Attention: Absence of item NFC In the engineering menu in 95% of cases means that on the board of your Xiaomi Redmi 9C There is no physical chip.

You can also check the list of connected devices through settings. Go to Settings → Connection and Sharing. If the NFC switch is missing completely and cannot be added through menu editing, this confirms the hardware limitation. Hardware revision of the device plays a key role in this issue.

Activation through MIUI Engineering Menu

If the diagnostics show that there is a hidden module, you can try to activate it through deep system settings. This method only works if the chip is installed in the factory, but software is locked for your region. To access the advanced settings, you will need an MTK Settings application or similar, since Redmi 9C runs on a MediaTek processor.

Once you have installed the tool you need to access the engineering menu, look for the Connectivity or Connectivity tab. This is where the radio settings are located. Find the NFC Control bar and try changing the value from Disable to Enable. Once you change the settings, be sure to restart the device with the Reboot command.

In some cases, standard settings do not apply immediately. ADB-The status check team, if you have access to a computer, is as follows:

adb shell dumpsys android.hardware.nfc

If the icon doesn’t appear after the reboot and the status is still in error, the device driver can’t initialize the hardware, which is often the case when you try to activate functions that aren’t provided by firmware for a particular hardware platform.

Use of third-party emulation applications

When hardware activation is not possible, users often turn to software emulation, applications like NFC Tools or Card Emulator try to use other communication modules to simulate tags, but it is important to understand the difference between reading tags and emulating a payment card.

Most of these programs work only in the mode of reading or writing simple tags. To work fully in payment terminals, you need access to Secure Element, a secure memory element that is not available in budget models without native NFC. Without this component, bank card emulation is impossible.

• 📱 Applications can read information from transport cards, if the module is still available.
• 💳 Payment card emulation requires hardware support HCE.
• 🔒 Android system restrictions block access to critical features without superuser rights.

There's a myth that putting magnetic rings on a smartphone can solve the problem, which is a completely false claim that external antennas can't make the chip inside a phone, they only distort the signals of other devices.

Comparison of Global and Chinese Firmware Versions

Differences between regional firmware versions are often confusing: Chinese versions of smartphones sometimes come with a full set of modules, while export versions can be trimmed to reduce cost.

Trying to flash the global version into Chinese for the sake of NFC doesn't make sense unless the physical module is soldered on the board. The device ID and the hardware configuration are determined during manufacturing. The software only manages the hardware available.

Moreover, changing the firmware region can lead to loss of warranty and problems with the main communication frequencies (Band 20), in some cases, the device may stop seeing 4G networks in your region, making the smartphone almost useless for calls and mobile Internet.

Alternative methods of contactless payment

If the built-in module failed to activate, do not despair. The modern market of accessories offers effective solutions for smartphone owners without NFC. The most reliable option is the use of emulator fobs or special rings.

These devices, like Smart Ring or payment chains, have a chip and an antenna inside, and you tie your bank card to that accessory through the manufacturer's app, and when you pay, you just have to put your finger and ring or key fob to the terminal, not the phone.

• 💍 Payment is made through an external accessory, no phone is needed.
• 🔋 The device works autonomously and does not require charging.
• 💳 All PayPass and PayWave systems are supported.

Another option is to use NFC stickers from banks, so you put this sticker on the back of your smartphone, and although that doesn't turn the phone into a payment device, it allows you to carry the card with you always, using the phone's case as a holder, and it's a physical solution that works.

⚠️ Warning: Stickers and rings work independently of the phone's operating system. They emulate a regular plastic card, so the terminal "sees" them as standard plastic.

Google Pay Setting Up and Security

It is important to address the issue of security when using any methods of activating hidden functions. If you manage to turn on NFC software, the system may stop going through the integrity check of Google SafetyNet.

Google Pay (now Google Wallet) requires that the device be certified compatible and not modified.Interference in system files or use of root rights to activate NFC often leads to blocking the possibility of payment.

You can use special utilities such as YASNAC to check security status. If the check is not passed, adding maps to Google Wallet will not be possible, even if the module is technically active, in which case the only way out is the physical media described in the previous section.

💡

Tip: Before attempting to activate hidden functions, make a full backup of the data. Interfering with system settings can lead to unstable communication or data loss.

Frequently Asked Questions (FAQ)

💡

The main conclusion: In the Xiaomi Redmi 9C model, the NFC module is most often physically absent. Software activation methods work only if the chip is present, but hidden.