The modern smartphone has long ceased to be just a device for calls and the Internet, becoming a full-fledged digital wallet. Owners of Xiaomi Redmi 9 often wonder about the possibility of using NFC technology to quickly pay for purchases in stores. Indeed, the presence of a short-range chip makes life much easier, allowing you to forget about carrying plastic cards and trifles.
However, the setup process can seem confusing due to the MIUI shell and regional constraints. In this article, we will detail how to activate the module, link a bank card, and what to do if the phone stops seeing the terminal. Importantly, not all global versions of Redmi 9 are equipped with an NFC module, so the first step should always be to check the hardware of your particular device.
Check the availability of NFC module in Redmi 9
Before you start software settings, you need to make sure that your smartphone is physically able to maintain contactless communication. The Redmi 9 range came in different versions for different markets, and components could differ. Some budget versions came without an embedded chip, making payment configuration impossible software methods.
The easiest way to check is to visually inspect the back cover of the device. Look for the NFC logo next to the camera or at the bottom of the case. If there is no logo, it does not mean there is no module, but requires a deeper check through the system menu. Lack of hardware support means that no firmware or apps will help to start the payment.
It's also worth checking the specification in the system settings. Go to the About Phone section and carefully study all the options available. Often it indicates the availability of appropriate communication modules. If you bought a phone from hand or from an untested store, this step is critical.
Activation of NFC in system settings
If you're convinced that you have a module, the next step is to software activate it, and in the MIUI shell, wireless interface management is put into a separate menu, which may vary depending on the firmware version, and the standard path is usually in the Connections and Sharing section.
Find the NFC switch and put it in the active position. Immediately after turning it on, the system can suggest selecting the default payment application. This is an important point, since the selected application will be launched when you bring the phone to the terminal. Make sure that you choose Google Pay or Wallet.
Some firmware versions require additional security settings, the system may request a screen unlock password if it is not already set, a mandatory requirement of payment systems to protect your finances in the event of a device being stolen.
☑️ Activation of the module
Setting up Google Pay and adding maps
Once the module is enabled, you need to configure the payment tool itself. For Redmi 9 users, the main way is to use Google Pay (or its analogues depending on the region), the application automatically scans the phone for compatibility and the necessary security certificates.
The process of adding a card is as automated as possible, so you can scan the card with a camera or enter the data manually. SMS-A successful map binding means that HCE-Host emulation works correctly and the phone is ready for transactions.
It is worth noting that the correct operation of the service requires a Google account and installed services Google Play. on the Chinese versions of firmware (CN ROM) without globalization may have difficulties with the launch of payment applications, requiring additional manipulation.
What if the bank does not support Google Pay?
Payment problems and how to solve them
Even with the right setup, users can experience situations where the terminal is not reading the phone. Often the problem lies in the position of the device. The NFC antenna in Redmi 9 is located at the top of the case, next to the main camera. You need to apply this area to the terminal, not the middle of the screen.
Another common reason is security accessories: Metallic cases or magnetic holders can shield the signal, making communication impossible. If you use a thick case with a metal plate for the car holder, try removing it at the time of payment.
It’s also worth checking if an antivirus or third-party application blocks access to the communication module, and sometimes security settings can get lost after a system update, requiring re-confirmation of access rights for payment applications.
⚠️ Warning: If the phone vibrates when trying to pay, but the terminal writes an error, do not try again immediately.
Comparison of payment methods and compatibility
Xiaomi owners often compare contactless payment methods. In addition to standard Google Pay, there are alternative methods such as Mi Pay (available in a limited number of countries) or direct payment through bank applications. Understanding the differences will help you choose the best option.
The table below compares the main characteristics of the different payment methods available for Android-based devices:
| Payment method | Internet is required | ATM support | Security |
|---|---|---|---|
| Google Pay (NFC) | No (offline token) | Tall. | Tokenization |
| Mi Pay | No. | Medium (depending on region) | Tokenization |
| QR-code | Yes (required) | Low. | Standard. |
| Physical map | No. | 100% | Risk of cloning |
As the table shows, using NFC through Google Pay provides the best balance between convenience and security.Tokenization technology replaces the real card number with a unique digital code that is useless to scammers outside the context of a particular transaction.
💡
Use different cards for different purposes: link the main card for large purchases to NFC, and for small expenses use a virtual card with a limited limit.
Security issues in the use of NFC
Financial security on Redmi 9 comes with several layers of protection, and in addition to the unlock password, the system uses a dedicated Secure Element or host emulation (HCE) with data isolation, which means that even if viruses are present in other applications, the card data remains unavailable.
It is important to keep an eye on which applications have access to NFC. Attackers could theoretically try to read card data if the phone is unlocked and is in standby near the reader. However, modern security systems require user confirmation for each new transaction.
It is recommended to check the list of active apps regularly and remove those that you do not use, and do not install applications for payment from unknown sources, bypassing the official Google Play store.
⚠️ Warning: Never hand your phone over to the wrong hands in an unlocked state before paying.The seller must bring the terminal to your device, not the other way around so you can control the process.
💡
Security NFC-Payment on Redmi 9 is comparable to using a chip card, but requires the mandatory installation of a password on the lock screen.