Modern smartphones have become universal tools to replace wallets, keys and passes, and Xiaomi’s Redmi 9T is no exception. The built-in NFC (Near Field Communication) module allows instant payments in stores simply by putting the device at the terminal. It’s not only convenient, it’s also safe, because these cards are not transmitted directly, but are replaced by a unique token. Many users buy this device precisely because of its excellent price-to-function ratio, including support for contactless communication.
However, despite the availability of hardware, the right setup may raise questions for those who are first encountering Near Field Communication technology. It is important to understand that simply having a chip is not enough – you need to perform a number of software steps to activate the service. In this article, we will discuss in detail how to prepare your Xiaomi Redmi 9T for contactless payments, what applications will be needed and how to avoid common errors when pairing with terminals. The NFC module in Redmi 9T operates at 13.56 MHz, which is the international standard for payment systems.
The configuration process takes only a few minutes, but requires careful input and security settings. We'll look at both the official Google Pay service and alternative solutions that may be relevant in the current market environment. Being ready to work with financial instruments is the first step to fully exploiting the capabilities of your ecosystem. Let's get to the technical side of the matter and check the compatibility of your device.
Check the availability of the NFC module on the Redmi 9T
The first step before you start setting up is to make sure that your particular device is equipped with the right hardware. The Redmi 9T model was produced in different regions, and although NFC is claimed in most specifications, the software shells may hide this feature or require manual activation. The hardware part of the smartphone is usually present, but sometimes it is disabled at the firmware level for certain markets.
For quick diagnosis, you can use a Settings or Quick Access Bar search. If the module is physically present and working, the system will display the appropriate switch. The absence of such a item on the menu may indicate regional restrictions or the need to update the software to the current version of MIUI. In some cases, resetting network settings helps, but this is an extreme measure that is not yet necessary to resort to.
To ensure that the component is working, follow the following steps through the device menu:
- 🔍 Open the “Settings” application and enter the abbreviation in the search bar NFC.
- 📡 Find a point «NFC» or Contactless payments and make sure the slider is activated.
- 📱 Check for the “N” icon in the status bar when you turn on the function.
- 💳 Make sure that the “Wallet” section selects “Wallet” HCE».
If you see an icon in the notification curtain after you turn on, then the hardware is ready to go. In case the search does not yield results, perhaps your version of the firmware needs an update. Users sometimes face a situation where the function is there, but the terminals do not see it, this is often solved by properly setting application priorities, which we will talk about later. Don't ignore this step, because it is the foundation for all the subsequent operation of the payment system.
Activation and basic NFC configuration
Once the module is confirmed, you need to set the settings right to ensure stable communication with external devices. In the Android operating system, which runs Redmi 9T, several system services are responsible for this. It is important not only to enable the function, but also to choose the correct method of emulation of the card. By default, the system often suggests using HCE (Host Card Emulation), which is the most versatile and secure option for modern smartphones.
Xiaomi owners should also pay attention to the pre-installed Mi Pay app (or Mi Wallet in global versions), which can compete for module management. For standard in-store payment via Google Pay, it is recommended to give priority to Google services to avoid conflicts when bringing the phone to the terminal. If you plan to use transport cards or corporate passes, the setting may differ, but HCE is important for financial transactions.
⚠️ Note: When choosing “Security Location” always give preference to the option “Wallet” HCE». Choice «SIM-Cards may cause payment applications to fail if your SIM does not support mobile operators for payment.
Additionally, check the lock screen settings. To conduct a transaction, the phone must be unlocked, so using biometrics or a reliable pin is a mandatory requirement for payment systems. If the screen is locked with a simple swipe without a password, payment may not pass. Also make sure that the NFC settings include the Android Beam option (if file transfer is required), although it is not critical for payment.
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For faster NFC activation, add the switch widget to your desktop or notification curtain – this will save battery power when the feature isn’t needed.
Preparation of a bank card in Google Pay
The main tool for the owner of Redmi 9T is the Google Pay app (or GPay), which is the official platform that encrypts your card data and transmits it to the terminal in a one-time code. The process of adding a card is as automated as possible, but requires careful input. The bank's security system can request additional confirmation, so keep a phone tied to the card number or a banking application on hand.
To get started, you need to download the app from the Google Play store if it is not installed by default. Once launched, the program itself will suggest adding the first card, reading its data through the camera or allowing it to be entered manually. It is important that the device is enabled geolocation and screen lock, otherwise Google Pay will refuse to work for security reasons. This is standard procedure for all Android smartphones.
The binding process is as follows:
- 📸 Launch the app and click the “Add Card” button or «+».
- 📷 Point the camera at the card to automatically read the number or enter the data manually.
- 📝 Accept the terms of use and confirm the identity through SMS or a bank call.
- ✅ Wait for the message of successful verification from the card issuer.
Once successfully linked, the card becomes the default card, but you can change that at any time. Redmi 9T supports multiple cards, which is convenient for sharing costs or using cards from different banks. Remember that the service requires a stable Internet connection at the time of adding the card, although the Internet is no longer required for the payment in the store itself - a secure token is used, stored in the device's memory.
Use of Mi Pay and alternative services
Xiaomi’s ecosystem offers its own Mi Pay service, which is integrated into the MIUI shell. In some regions, this service allows you to pay directly through the system menu, bypassing the launch of a separate application. However, the functionality of Mi Pay depends heavily on the country of use and support from local banks. While Google Pay operates globally, Mi Pay can be limited to financial institutions.
For users who do not have standard methods, there are alternative applications that emulate the card, such as Samsung Pay (on some modifications), Curve or specialized banking applications with QR or NFC payment function. Install such programs requires caution: download them only from trusted sources, such as Google Play or the official website of the bank. Third-party wallets may have their own features of setting priorities in the Android system.
Comparison of the features of payment systems on Redmi 9T:
| Service | Type of integration | Internet is required to pay for | ATM support |
|---|---|---|---|
| Google Pay | Annex | No (offline token) | Tall. |
| Mi Pay | Systemic | No. | Depends on the region. |
| Banking appendix | Annex | Often required | Medium |
| Curve | Annex | No. | Tall. |
If you choose to use Mi Pay, you'll need to go through the Mi Wallet app and add a card there. The interface may be different from Google, but the way it works is the same. The main advantage of Xiaomi's system solutions is that you can call a payment card with a double-press of the power button or a swipe if you have one on your firmware version, which speeds up the queue payment process.
Payment process in the store through the terminal
When all settings are done and the card is added, there comes a moment of truth - the first payment in a real retail outlet. Once you go to the checkout, make sure that your Redmi 9T screen is on. Unlike some other systems, Android often requires that the device is not in deep sleep, although it is usually not necessary to unlock it completely (enter a pin code) before being brought to the terminal - it is enough to unlock the fingerprint or face at the time of application.
Hold the top of the back of your smartphone (where the NFC module is located) to the terminal reading area. The distance should be no more than 1-2 centimeters. Hold the phone steady, without sudden movements. The terminal should emit a characteristic beep, and the phone screen will show a vibration and a notification of a successful transaction from Google Pay or the bank.
☑️ Checklist before going to the store
⚠️ Warning: Do not remove the case from your phone during payment if it contains metal plates or a too thick layer of material. NFC, The terminal does not read the data even if the module is in operation.
If the terminal doesn't respond the first time, don't panic. Try changing the phone's angle slightly or moving it up or down a centimeter. The antenna area in Redmi 9T is located at the top of the case, next to the camera. If the payment never went through, check if another NFC app is currently selected in the system settings. Also make sure the card is not expired and it is not blocked by the bank.
Troubleshooting and troubleshooting
Even with the right setup, there can be situations where payment doesn’t go through. One of the common problems on Xiaomi is the aggressive MIUI energy saving system, which can kill the background processes of payment applications. To avoid this, you need to go to the battery settings, find Google Pay and set the “No Limits” mode, which will allow the application to always be ready for instant response.
Another common cause of failure is time and date desynchronization. Security protocols require exact timing on the bank's device and server. If you're traveling across time zones or manually changing time, return date and time settings to automatic mode. It's also worth checking for updates for the Google Play Services app itself, as it's the one that's responsible for securing transactions.
List of actions in case of errors:
- 🔄 Reboot your smartphone – it solves 90% of temporary software failures of the communication module.
- 🗑️ Clear the cache of the Google Pay app in the Apps section».
- 📡 Switch flight mode and turn it off to restart network modules.
- ❌ Remove and add the card again if previous methods have not helped.
What to do if the phone says “Payment not executed”?
If nothing helps, it may be the hardware or compatibility of a particular terminal model that helps, in rare cases, a complete reset of network settings (Settings → Advanced Settings → Reset and Reset → Reset settings Wi-Fi, mobile Internet and Bluetooth) does not delete your personal data, but returns network settings to factory values, which often eliminates software conflicts.
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The stable performance of NFC on Redmi 9T depends not only on the availability of the chip, but also on the correct power saving settings and the relevance of Google system services.