Technology NFC (Near Field Communication) has long ceased to be exotic and has become a standard for modern smartphones, allowing you to instantly exchange data and make contactless payments. However, after a major update to the operating system to Android 9 Pie, many users are faced with unexpected difficulties: the usual switches disappear, and the settings move to other sections of the menu. This is due to the fact that Google has changed the logic of organizing system parameters to improve security and performance.
In this article we will look in detail where exactly to look for the treasured toggle switch in the new shell and how to correctly configure the module to work with bank cards or transport passes. You will find out what it is read/write mode and why it sometimes interferes with regular payment. We will also touch on issues of hardware compatibility, because not all devices support this function at the software level, even if the chip is physically present inside the case.
If you have just updated your gadget and cannot find the option you need, do not rush to reset the settings to factory settings. Most often, the problem is solved in a couple of clicks in the right menu. Let's go through all the stages of activation and configuration one by one so that your smartphone starts “communicating” with terminals and tags again.
Search and activate the module in the system settings
The first thing you need to do after updating to Android 9 is to check if the module was disabled systemically during the data migration process. Unlike previous versions, where the switch was often located on the main Quick Settings screen, in the new OS it may be hidden deeper. Go to the main menu Settings and scroll the list down to the section Connected devices. This is where all wireless interfaces are now grouped.
Inside this section, find the item Connection settings or simply NFC. If you see a switch, simply activate it. However, in some custom shells from manufacturers, such as MIUI or EMUI, the path may differ. For example, in some models Xiaomi you need to go to Additional functions, and in smartphones Huawei to the section Wireless network.
There is also a quick way to activate through the notification curtain. Swipe down from the top of the screen twice to expand all Quick Settings tiles. Look for the letter icon N. If it is not on the visible part of the screen, click on the pencil or the tile editing button - the icon may have been accidentally removed from the active area and hidden in reserve.
⚠️ Attention: If you do not find the NFC switch in any of the menu sections, this may mean that your device is not equipped with the corresponding module. Check the technical specifications of your model on the manufacturer's official website before attempting software activation.
Setting the card emulation mode and HCE
Simply enabling the module is not enough to make payments. To work with banking applications such as Google Pay (now Google Wallet) or third-party wallets, you must correctly configure the chip's operating mode. In Android 9 this option is called HCE (Host Card Emulation). It allows the smartphone to emulate a physical bank card, transmitting encrypted data to the terminal.
To activate this function, follow the path Settings → Connected devices → NFC → Payment without contact. Here you will see a list of available applications that can use NFC. Select your default banking application or system payment service. If this item is not selected, the terminal in the store may simply not see your phone, even when the module is turned on.
In the same menu, the option “Payment without unlocking” is often found. It may be disabled by default for security purposes, requiring you to enter your PIN or fingerprint before each payment. If you want to speed up the purchasing process, you can activate this option, but be aware of the risks of data loss if your device is stolen without a screen lock.
Settings → Connected devices → NFC → Payment without contact → Select an applicationFor maximum security, leave payment only with the screen unlocked. This will prevent accidental charges if the phone accidentally ends up next to the terminal in the bag.
Modes for reading and writing NDEF tags
In addition to payment, NFC is used to read information from various tags and tags. In Android 9, managing these modes has become more flexible. You can allow or block your smartphone from automatically reading data when you touch it. This is useful if you use a smart home or task automation through applications like Tasker.
In the NFC settings menu, find the item Read/write mode or Android Beam (although Beam is already becoming obsolete in the nine, it can still be found). Activating this mode allows the phone to interact with passive tags. If you don't use such scenarios, the feature can be turned off to save battery power, although consumption in standby mode is minimal.
When Read mode is turned on, the phone can respond to foreign RFID tags, such as those on travel cards or library cards, causing pop-up notifications. If this is annoying, it is better to disable automatic reading, leaving only the card emulation mode active for payments.
- 📱 Card emulation: the main mode for contactless payment in stores.
- 🏷️ Read/Write: necessary for working with smart tags and automation.
- 📡 Android Beam: Outdated file transfer protocol, replaced by Nearby Share.
Compatibility and security types table
Not all NFC modules work the same. Depending on the chip manufacturer and Android version, different security protocols may be supported. For Android 9 users, it is important to understand the difference between Secure Element and Host Emulation (HCE), as this will affect the choice of banking application.
Below is a table describing the main types of NFC implementations in devices running Android 9 Pie. This will help understand why some older banking applications may not work on new smartphones without HCE support.
| Implementation type | Description | Use | Security |
|---|---|---|---|
| Secure Element (SE) | Separate security chip on board | Payment via SIM card or built-in chip | Maximum (hardware) |
| Host Card Emulation (HCE) | Software emulation in OS | Google Pay, banking applications | High (depending on OS) |
| Card Emulation (CE) | Classic emulation | Outdated access systems | Average |
| Reader/Writer | Reading tags only | Reading tariffs, links | Low (passive mode) |
⚠️ Attention: Settings interfaces may vary slightly depending on the firmware version and_skin_ manufacturer. If you do not find an exact match of menu items, use the built-in search for settings by entering the query "NFC".
☑️ Checking readiness for payment
Solving common connection problems
Even with proper configuration, users sometimes encounter a situation where the terminal does not see the phone. Most often, the problem lies not in a software glitch, but in the physical location of the antenna. In most smartphones, the NFC module is located at the top of the back cover, next to the camera, but in some models it is shifted to the center or down.
Try placing the phone on the terminal at different sides and angles. A thick protective case, especially one with metal inserts or magnetic clasps, can shield the signal. In such cases, it is necessary to remove the cover to check the functionality of the module. Also make sure that there are no cracks in the screen in the antenna area, which is rare, but possible.
If a software failure does occur, try performing a soft reboot of the module. To do this, turn off NFC, restart your smartphone and turn the function on again. In more complex cases, clearing the system service cache helps Android Pay or Google Pay through the app management menu.
What to do if resetting did not help?
If rebooting and removing the case did not help, there may be a problem with the drivers. Try updating the system software through the "System Update" menu. If this doesn't help, you may need to reset your network settings, but this will delete saved Wi-Fi passwords.
Impact of third-party applications and energy saving
Android 9 introduces more aggressive power-saving algorithms that can forcefully disable background processes, including NFC services. If you have applications installed to clear memory or optimize the battery (for example Clean Master or built-in utilities from the manufacturer), they may block the module from working to save energy.
Check the battery settings for applications that use NFC. Make sure they are allowed to run in the background and the Hard Limit option is disabled. Add your banking app to your energy saving exceptions or whitelist. This ensures that the system does not “put to sleep” an important service at the time of payment.
Also pay attention to access rights. Some applications require NFC permission to function. Go to Settings → Applications → Permissions → NFC and check whether the necessary apps have access to this module. Missing a checkmark here can completely block the functionality.
Aggressive energy saving settings are a common reason for NFC not working in the background. Be sure to add payment applications to the exceptions.
Frequently asked questions (FAQ)
Why did the NFC icon disappear after updating to Android 9?
The menu structure has changed in the new version of the OS. The icon may have disappeared from the default notification shade. Go to the quick tiles settings and add it manually, or look for the switch in the “Connected devices” section.
Is it possible to enable NFC on a phone that does not have it in hardware?
No, it is not possible. NFC requires a special chip and antenna inside the case. Software methods cannot emulate hardware for communication with external terminals.
Is it safe to pay for purchases with an unlocked screen?
Modern tokenized payments are quite safe, since they do not transmit a card number, but a one-time code. However, to protect against accidental operations, it is better to leave the unlocking requirement before payment.
Does enabled NFC affect the battery drain rate?
In standby mode, energy consumption is minimal and almost imperceptible. A significant discharge occurs only during active data transfer or constant scanning of tags.
How to check if my NFC module is working?
Download a free NFC diagnostic application from the Google Play store. It will show the status of the chip, its type and allow you to test the reading of tags, confirming the serviceability of the equipment.