Modern smartphones have long since ceased to be just devices for calls, becoming universal tools for financial management. Xiaomi Redmi Note 9 Pro model is equipped with a module NFC (Near Field Communication), which allows you to use the gadget as a payment terminal. This eliminates the need to carry plastic cards and constantly look for change for fare or purchases. However, in order for the technology to work, the user needs to perform a number of settings in the MIUI system and tie the banking product.
The activation process does not require a deep technical knowledge, but it is important to follow the sequence of actions to avoid errors when pairing with terminals. Often users are faced with the fact that the function seems to be on, but the payment does not pass. This may be due to the wrong choice of the application by default or the lack of permission to access the communication module. In this article, we will discuss in detail each stage of settings, and also consider how to fix typical problems that may occur during operation.
It’s worth noting that the contactless technology runs at 13.56 MHz and ensures secure transmission of encrypted data over short distances. Owners of the Redmi Note 9 Pro are lucky because the hardware of the device fully supports the security standards required by banks. The correct software configuration is the only thing that separates you from comfortable using your smartphone for payments in stores, cafes and public transport.
Checking for the presence of an NFC module and activating it
Before you start configuring payment systems, you need to make sure that the module is physically present in your device and correctly defined by the operating system. In global versions of the Redmi Note 9 Pro, this chip is installed by default, but in some regional versions (for example, Chinese versions without global firmware), it may not be. You can check the presence of the component through the system menu or using third-party gates, but the easiest way to use the standard means of the MIUI shell.
For initial activation, the user needs to go to the main settings menu, and you can do this by clicking on the gear icon on the desktop or in the notification curtain. Next, you should find the section responsible for connections and wireless networks. Depending on the firmware version, it can be called Connect and Share or simply Additional Features. This is where the switch that triggers the antenna is hidden.
- 📱 Open Settings and go to Connection and Sharing.
- 📡 Find a point. NFC and move the slider to the active position.
- 🔒 Make sure that the right emulation application is selected in the “Element Position” menu.
- 🔄 After the module is turned on, restart the device to apply the changes.
It's important to understand that just turning on the switch is not enough. The system needs to know which application will handle payments. The NFC settings menu often includes the item's position or default payment option. Here you need to choose Google Pay (or an alternative app if you use other services) so that when you bring your phone to the terminal, the system automatically triggers the desired interface, rather than trying to read the transport card or tag.
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If after turning on the NFC phone begins to discharge quickly, check whether the process of continuous scanning of tags is started. In the settings of the module, you can turn off the audible alert when labels are detected, which will save a little battery power.
Setting up Google Pay for Payments
The main tool for contactless payment on smartphones with a pure Android operating system or MIUI shell is Google Pay. This application acts as an intermediary between your bank and the payment terminal, ensuring the tokenization of data, which means that the real card number is not transferred to the seller, but a unique virtual code is used, which significantly improves the level of security of financial transactions.
The process of adding a card starts with the launch of the application itself. If it is not installed, it must be downloaded from the official Google Play store. Once you log in to your Google account, the interface will suggest adding the first payment means. You can scan the card with your smartphone camera or enter data manually. The system automatically identifies the issuing bank and offers to go through the verification procedure, which most often occurs through an SMS code or a call to the bank.
☑️ Checking readiness for payment
Once the card is successfully linked, it becomes available for use. However, there are nuances related to regional restrictions. In some cases, the bank may block the card from being added to digital wallets for security reasons or because of sanctions restrictions. In this situation, you should contact the bank support to clarify the possibility of using the Google Pay service with your card. If the bank does not support the service, you can use alternative applications such as Mi Pay (in supported regions) or the applications of the banks themselves, if they have the function of emulation of the card.
⚠️ Note: When adding a card, make sure that the device does not have superuser (Root) rights installed and the bootloader unlocked. Bank applications may refuse to work on modified firmware for security reasons.
Solving Contactless Payment Problems
Even when set up correctly, there can be situations where the terminal is not reading the phone. This does not always mean that the device is broken. Often the problem lies in a software failure, an outdated application cache or a conflict of services. The first thing to do is check whether all system components, especially Google Play Services and the payment system application itself, are updated. Older versions may not properly interact with new terminal security protocols.
Another common reason is a metal case or card pasted onto the back cover of a smartphone.The metal shields the signal, and the NFC antenna located at the top of the Redmi Note 9 Pro body cannot connect to the reader.Remove the case and remove foreign items from the back before paying.It's also worth checking if the battery is critically discharged - in power saving mode, some functions may shut down.
If the software methods don't work, you can try resetting the module. To do this, in the Settings menu → Connect and Sharing → NFC, you need to find the reset option or just turn off and turn on the module again. In more complex cases, cleaning the data of the Google Pay application and reassigning the cards helps. Be sure to remember the password from your Google account before you do this.
Hidden NFC Settings
Alternative ways of paying via smartphone
In addition to standard Google Pay, Xiaomi’s ecosystem and Android capabilities allow for other payment methods.Mi Pay is active in some regions, which is integrated directly into the MIUI shell. Its advantage is that it integrates more deeply with the phone’s security system, which sometimes allows you to bypass the restrictions imposed on third-party applications.
Many banks also release their own applications with NFC payment function. For example, large banks’ applications often have a built-in QR Payment module or NFC card emulation. To use this method, you need to select a specific banking application in the NFC Payment default settings instead of Google Pay.
There are also aggregator applications that allow you to manage multiple cards from different banks and choose the source of funds at the time of payment, which are convenient for users who have cards from different payment systems. However, it is worth remembering that using third-party software always carries certain risks, so you should only download such programs from trusted sources, such as Google Play.
| Payment method | Annex required | Level of security | Compatibility |
|---|---|---|---|
| Google Pay | Google Pay | High (Tokenization) | Global |
| Mi Pay | Mi Wallet / Xiaomi Services | Tall (Biometry) | Regional |
| Bank App NFC | Bank's annex | Medium/High | Depends on the bank. |
Security issues in the use of NFC
Financial security is the number one priority for smartphone users. NFC technology itself has a high level of protection: the connection is established only a few centimeters away, which excludes remote reading of data by hackers. In addition, when paying through Google Pay or similar services, your real card number is not transferred to the terminal. Instead, a one-time token is generated that is useless for fraudsters outside the context of the current transaction.
For additional protection on Xiaomi Redmi Note 9 Pro, it is recommended to use biometric authorization, setting up a fingerprint or facial recognition ensures that even in the case of a phone theft, an attacker will not be able to make a purchase. In the payment application settings, you can set a limit to the amount to which confirmation is required, or require confirmation for each transaction, regardless of the amount.
Don’t forget basic digital hygiene. Don’t install apps from unknown sources that can request access to NFC and intercept data. Regularly check the list of devices that have access to your Google account and change passwords if you lose your phone, Find a Device allows you to remotely lock your smartphone or erase all data, including linked cards.
⚠️ Note: Never pass the unlock code or CVV-The card code is not used by the bank or the police, and they never ask for this information over the phone.
Technical features of the work of NFC on the Redmi Note 9 Pro
The NFC module in the Redmi Note 9 Pro is located at the top of the rear, next to the camera. This is standard for most modern smartphones. The antenna operates in passive mode when the phone is turned off (card emulation mode), but for full operation of payment systems requires active power and running operating system. The chip supports ISO/IEC 14443 and ISO/IEC 15693, which ensures compatibility with the vast majority of terminals and tags.
It is important to consider that the module may depend on stickers or thick covers. If you use a metal framed protective glass or a magnetic fastener case, this can significantly weaken the signal. In such cases, it is recommended to remove the case before payment or move the phone, the best reception point. Sometimes changing the angle of the device relative to the terminal helps.
Developers and advanced users can read and write tags through standard Android tools. However, for ordinary users, this feature is closed to avoid accidental modification of important tags. The energy consumption of the module in active mode is minimal and has little to no effect on the autonomy of the device, so keeping NFC on constantly is quite safe for the battery.
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The stability of NFC is directly dependent on the quality of communication with the terminal and the absence of physical obstacles between the antenna and the reader.