Why does not work NFS Xiaomi Redmi Note 8T

Xiaomi smartphone owners often face a situation where the payment terminal does not see the device or the bank's application refuses to conduct a transaction.The Redmi Note 8T model is equipped with an NFC module, but its correct operation depends on many software and hardware factors. If you are used to paying with a phone in the store, a sudden failure of the function can be an unpleasant surprise that requires immediate intervention.

The problem can be both a simple software failure of the MIUI operating system and physical damage to the antenna after a fall. Before you carry a gadget to the service center, it is worth conducting a comprehensive diagnostics that in 90% of cases returns contactless payment to life. In this article, we will discuss all possible causes and methods for eliminating them.

Checking availability and serviceability of the NFC module

The first thing to do is to make sure that your particular instance of smartphone is actually equipped with a short-range communication module. Although the Redmi Note 8T was originally designed with this technology, there are regional versions or restored devices on the market where this component can be missing or replaced with a counterpart without the corresponding chip.

For quick checks, use the engineering menu or third-party utilities. The most reliable way is to install the NFC Check app from the official Google Play store. It will instantly show the status of the chip and its ability to read tags. If the program says that the device does not support the technology, although it is declared in the specifications, this may indicate a hardware malfunction or no drivers in the firmware.

⚠️ Note: If you have been reflashing the phone to the global version from the Chinese, the lack of NPS may be due to incorrect software installation, where the drivers of regional modules were not integrated into the system.

It's also worth checking the physical location of the antenna. In the Redmi Note 8T, it's built into the top of the body, closer to the main camera. If you're wearing a metal case or using a magnetic clasp case, it can shield the signal. Take off the accessory and try to bring the phone back to the terminal again. Metal objects between the smartphone and the reader completely block the data transmission.

Activation of the function in the settings of the MIUI system

Often, users forget that a module can be simply turned off in the software interface. MIUI Wireless interface management is on a separate menu. To activate the function, go to Settings, then select Connect and Sharing (or "More" in older versions of Android). NFC.

Make sure the switch is blue, which means it's active. If the switch switch switch is turned off spontaneously after a few seconds, it's a sure sign of a program conflict or a system process error, in which case simply rebooting the device may not be enough.

Additionally, check your security settings. Settings → Password & Security → Privacy may be restricted for applications that use geolocation and communication. While geolocation is not always mandatory for a NFS to work, some banks require it to be enabled to confirm transactions.

It is important to note that in some versions of the firmware MIUI There's a "Safe Element" function. It needs to be set to mode. HCE Wallet or SIM-If the wrong security element is selected, the phone will see the terminal, but will not be able to log in to pay.

Set up applications for contactless payment

The module itself is just hardware, and the main work of data encryption and communication with the bank is done by applications. Xiaomi smartphones most often use Google Pay (now Google Wallet), Yandex Pay or Mir Pay. Make sure that the desired application is installed, updated to the latest version and has all the necessary permissions.

Go to Settings → Apps → All apps, find your payment service. The Permissions section should activate NFC use and, in some cases, access to contacts and storage. Without these permissions, the app will not be able to read card data or tokenize it for payment.

Also check which application is the default for contact payments. Path to setup: Settings → Connection and Sharing → Tap for payment. This should be where your primary payment service should be selected. If you always ask, the system will offer choices every time, which can knock down the payment process in a rush at the checkout.

If you use virtual cards or services like SberPay, make sure that the card is added as a means of payment, not just as a loyalty card. The card must be “Main” in the bank application and verified through an SMS code.

Software Conflicts and Third-Party Utilities

One common cause of failure is third-party programs that try to intercept control of the communication module. Antiviruses, task managers or “phone speed” applications can block the background process of the NFC Service, considering it suspicious or consuming the battery.

Special attention should be paid to programs for emulating access cards (intercoms). If you installed utilities to copy keys, they could change the settings of the security element. Try to remove newly installed applications associated with wireless communication and check the work of the standard module.

The table below shows common conflicts and ways to resolve them:

It's also worth checking if flight mode is on, and sometimes the system sticks in this mode partially, shutting down the communication modules but leaving the screen on, and turning on and off the flight mode through the notification curtain to force all radio modules to restart.

Resetting network settings and reconnecting

If the software settings are at a deep level, resetting the network settings will help, which will not delete your personal files, photos or contacts, but will return the settings of Wi-Fi, Bluetooth and mobile Internet to factory values, which often solves the problem when the phone sees the terminal but can not establish a connection.

To perform the reset, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. Confirm. Once you reboot, you will have to re-enter your Wi-Fi passwords and reconnect your Bluetooth headphones, but the NFC module must start working correctly.

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Before resetting your network settings, take a photo of important Wi-Fi passwords or make sure you remember them, as it will not be possible to recover them from your phone’s memory after reset.

In some cases, clearing the cache of the Android Pay or NFC Service itself helps. Go to Settings → Apps, search for Google Play or NFC Services, select Memory and click Clear Cache. Don't confuse it with Clear All Data, as this may require re-associating cards.

⚠️ Warning: Resetting the network settings will also remove all stored Bluetooth pairs. If you have a smartwatch or fitness bracelet, they will have to be paired again.

Hardware problems and module repair

When all software methods are exhausted, there is a possibility of physical failure. The NFC module in the Redmi Note 8T is a small antenna glued to the inside of the back cover or integrated into the plume. When the phone falls, especially at an angle, or if the battery is replaced poorly, this plume may move away or damage.

If you've recently changed the battery or back cover in an unofficial service, the problem is 99% the build is poor, the wizard may have forgotten to plug the antenna connector or damaged it when you install it, so you need to open the device and check the density of the plume to the motherboard.

It's also worth looking at the antenna itself. It looks like a thin film with tracks. If it shows breaks, darkening or oxidation (for example, after moisture), you'll need to replace the antenna module. Fortunately, for the Redmi Note 8T, these parts are affordable and affordable.

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If the NFS did not work after replacing the antenna, the problem may be in the power controller on the motherboard, which requires complex micro-subbed repairs.

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