The modern smartphone has long ceased to be just a device for calls, turning into a digital wallet that we carry in our pocket every day. For owners of budget models such as Xiaomi Redmi 9C, the issue of whether or not to have NFC (Near Field Communication) module (NFC) is especially acute, since not everyone knows how to activate this feature or make sure it is available. In this article, we will discuss in detail all the nuances of the operation of short-range technology on your device, from checking the hardware to setting up popular payment systems.
Many users are confused when they can’t find a switch on the menu, unaware that the reason may lie in the regional version of the firmware or the hardware limitations of a particular modification. It’s important to understand that contactless payment is not magic, but the result of correct software and hardware components that require the correct initial configuration. We will help you understand why payment may not work, and offer step-by-step solutions for most common problems.
Before you get into the complex settings, make sure your Redmi 9C is basic ready to work with external readers.The setup process may seem daunting to a beginner, but following our instructions, you can turn your phone into a convenient tool for shopping in stores, transport and other places where PayPass or PayWave technology is supported in a few minutes.
Check the availability of NFC module in Xiaomi Redmi 9C
The first and most important step is to physically check for a communication module in your particular smartphone model, because Xiaomi often releases the same phone models in different versions: in some versions (usually for the global market), the NFC module is present, and in others (often for the domestic market of China or some countries in Asia), it may be completely absent at the board level.
The fastest way to check for a chip is to inspect the back of a device or a smartphone box.The NFC logo is often applied directly to the case or package next to other technical markings. If there are no visual markings, this does not always mean no function, but requires a deeper programmatic verification through the system settings menu.
It's also worth considering that even if there is a module, it can be software-enabled at the regional setting level. In some cases, users buy phones that are designed for markets where the technology is less common, and they find that standard methods can't enable the feature, which may require changing the region or reflashing the device to a global version of the software.
- 🔍 Carefully inspect the back of the phone for the logo NFC.
- 📦 Check the original packaging and technical documentation (instructions) inside the box.
- 🌐 Find out the exact device model (Global Version or Global Version) CN Version) before purchase or setup.
- 📱 Use special scanner apps from Play Market for detailed hardware diagnostics.
If you don't find any external signs, go to the software check through the settings menu, as this is where the main switch of the technology is hidden. The absence of an item in the menu often indicates a hardware lack of the module, but in rare cases this can be a software bug of the current version of the MIUI shell.
How to enable NFC through MIUI settings
Once you've made sure you have a module, you need to activate it through the standard operating system menu. The MIUI shell interface may vary slightly depending on the Android version and the firmware itself, but the logic of the arrangement of the elements remains the same. First, open the Settings app on your smartphone's home screen.
In the settings that open, look for Connection and Sharing (or just Connection) and that's where all the wireless interface settings are concentrated, including Bluetooth, the access point, and of course, our module. If you're searching by settings, just type "NFC" into the search bar at the top of the screen, and the system will suggest the menu item you want.
☑️ Module-inclusion algorithm
Inside the menu, you'll see a switch that needs to be switched to the active position, and once turned on, the system can prompt you to select the default payment app if you have multiple such services installed, which is critical because the selected application will be launched when you bring the phone to the terminal.
⚠️ Note: If after turning on the module, the phone begins to discharge quickly, check the list of applications that have access to the phone. NFC. Some background programs can constantly poll the chip, consuming battery power.
Also available in this menu is Android Beam (although newer versions of Android replace it with Nearby Share), which allows you to transfer files and contacts between devices. Make sure that the payment systems are enabled lock screen or biometric protection, as banks require this for the security of your funds.
Google Pay and other payment systems
The main purpose of the module for most users is to be able to pay for purchases in stores with a single touch. On Xiaomi smartphones, Google Pay (now Google Wallet) remains the dominant system, which requires the correct setup for safe operation. First, make sure that the phone has the latest versions of Google Play services.
To add a card, open the Google Pay app and click the add button. You will need to take a picture of the card or enter the data manually, and then confirm the link via the app. SMS-Once the card is successfully linked, it will be available for payment, but only if all security requirements are met.
- 💳 Add your main bank card to the Google Pay app.
- 🔐 Install a reliable method of unlocking the screen (PIN-code, pattern lock or fingerprint).
- 📲 Make sure that the “PayPass” or “Contactless Payment” feature is enabled in the Google Play settings".
- 🏦 Check in the bank app if payment via mobile devices is allowed for your card.
Importantly, some banks may not be able to support devices that have superuser rights (Root) if your Redmi 9C was unlocked to install custom firmware, the payment system may refuse to work, considering the device to be unsafe, in which case you will need to use special modules to hide root rights.
What if the bank does not support Google Pay?
Solution: NFC is not working or not seeing the map
It's quite common for a module to be on, but the phone doesn't respond to terminals or read cards. One of the most common reasons is a thick protective case, or the presence of metal elements on the back of the smartphone. Metal shields the signal, making it impossible to communicate between the phone's antenna and the reader.
Another reason could be the malfunction of Google Play or the payment app itself, in which case it helps to clean the cache and application data. Go to Settings → Apps → All apps, find Google Pay (or Wallet), select Memory and click Clear Cache, and then Clear Everything.
| Problem. | Possible cause | Decision-making |
|---|---|---|
| The phone can't see the terminal. | Thick case or metal | Remove the case, bring the phone closer |
| Payment error | No internet or time outage | Check date/time and connection |
| No map added | Bank does not support or support Root | Hide a Root or Change a Bank |
| Unintentional shutdown | MIUI Energy Savings | Turn off the savings for NFC-service |
Also worth paying attention to MIUI power saving settings, which can aggressively unload background processes. Go to the battery settings and set the No Limits mode for Google Pay and Google Play Services apps, which will prevent the system from shutting down necessary services at the most inopportune time.
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If NFC stopped working after the system update, try restarting your phone in Safe Mode, and if it's running in that mode, it's causing a conflict with one of the apps you installed.
Using NFC to Transfer Data and Tags
In addition to payment, the short-range module in Xiaomi Redmi 9C is great for transferring data between devices, allowing you to exchange contacts, links to sites, photos and even large files simply by putting two phones back together, for which both devices must be enabled Bluetooth and NFC.
It can also read NFC tags that can be programmed to perform automatic actions, such as when you touch a tag on the front door, you can automatically turn on Wi-Fi and put your phone on silent mode.
Android Beam (or its Quick Share equivalent) makes it incredibly easy to exchange data between Android devices. You don’t have to search for a Bluetooth device or enter passwords, just tap the back of one phone at the back of another, and the system will prompt you to send the content.
- 📲 To transfer photos, simply open the image and attach the phones to each other.
- 🏷️ Use programmable software. NFC-tags for automating tasks (alarm clock, modes).
- 🔗 Share your contacts through the Share Menu and select NFC.
- ⚡ Data transfer speed through NFC Small, so large files are sent via a Bluetooth channel that is activated automatically.
⚠️ Note: When transferring files through NFC Make sure that the screens of both devices are on and unlocked. For security reasons, transmission will not start if one of the devices is locked.
Data security and protection when using NFC
Wireless technology always carries potential risks, so security issues should be taken into account. Xiaomi's NFC module has built-in security mechanisms, but the user must also follow certain digital security hygiene rules.
Attackers could theoretically create a tag that would redirect you to a phishing site or try to run a malicious script. While current versions of Android and MIUI have protection against such attacks, vigilance is not lost. Always check which site address opens after scanning the tag before entering any data.
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NFC-Payment is one of the safest methods of settlement, since the transaction does not transfer the real card number, but uses a special tokenized code that is useless for fraudsters.
For added protection, it is recommended to disable the NFC module when you do not plan to make purchases or transfer data.This will not only save battery power, but also eliminate the possibility of accidental reading or attempting unauthorized access to your phone data in crowded places.
Regularly update your operating system and security applications. Xiaomi periodically releases patches that close vulnerabilities in the operation of wireless interfaces. The current version of the software is to ensure that your financial data is under the maximum protection of currently available funds.