You won’t find any number of icons on the top panel of your smartphone. Here there is “Wi-Fi”, and the level of cellular communication, and an arrow indicating downloading a file from the Internet. Among them you can find the mysterious N icon. What does it mean? Is it possible to remove it in order to somehow “unload” the panel?
What does the N icon mean in the notification bar?
For advanced users, the appearance of a symbol in the notification line indicates NFC activation. The technology is similar in appearance to Bluetooth, the difference is that the devices are placed at a distance of 10 cm from each other to carry out NFC communication.
The symbol that appears in notifications does not require the user to take certain actions; its main function is informative. The appearance of N means activation of the option for making contactless payments. In this case, the phone is ready for certain actions:
- Data connection;
- Making “touch” payments to pay for goods and services.
Where else can you use NFC?
The main direction is contactless payment. You can't go anywhere without her today. Almost all shops, food and entertainment establishments, and service industries have terminals. The modern line of such terminals has a radio module that accepts payments from smartphones without any problems. For this reason, users buy separate phone models. But this is not the only bonus.
Data transfer
Bluetooth fades into the background compared to NFS. This modern technology is much faster and has a higher degree of protection for transmitted content. Contacts, photos, links, notes, points on the map are transferred in a few seconds. In this case, you and the recipient will only need to click on the screen once. The system itself finds everything and establishes a connection.
But there is one peculiarity. This type is not suitable for large volume transfers. Then NFS is used only for connection. For the exchange itself, wi-fi or Bluetooth will be used.
Scanning and programming tags
A feature that many people have heard about is tags. They encrypt advertising, product composition, information about the establishment, and even advertising posters. But NFC chips will decrypt all this and redirect to a website with information. Just point the camera at the image of the mark and read what is written there. It's fast and free. It is also possible to create your own code and hide some message or link there.
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There is special software for creation - NFC Tools. Android owners can find it in the official Google Play software store. Install the program and start using it.
Contactless payment
To make payments in a contactless format, all you need is a terminal and a phone. To do this on Android, log in to Google Pay, enter the details and key to enter the card. After this, when making a payment you will only need to enter a password or fingerprint. There is another interesting and unique feature - card emulation. A card is placed in the smartphone, which acts as a pass, key or travel card. It is then read through a contactless module.
Should I turn off NFC?
If you use mobile payments, you should leave NFC enabled. If you don't, turn it off and save yourself some battery life.
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Sources used:
- https://www.iphones.ru/inotes/kak-rabotaet-nfc-12-07-2018
- https://bezopasnik.info/%d0%ba%d0%b0%d0%ba-%d0%be%d1%82%d0%ba%d0%bb%d1%8e%d1%87%d0%b8% d1%82%d1%8c-nfc-%d0%b2-%d1%82%d0%b5%d0%bb%d0%b5%d1%84%d0%be%d0%bd%d0%b5/
- https://ru.techq.eu/how-to-disable-nfc-remove-the-symbol-from-your/
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Necessary conditions for payment
Let's look at how payment terms differ for different devices and operating systems.
Android Pay
On the Android platform, NFC technology became operational in May 2021, but even today not all devices are compatible with the function. The necessary conditions:
- OS version KitKat4 and higher;
- availability of NFC, check information about technology support in “Settings” or in the description of the smartphone.
In addition, you should disable the Knox service on your smartphone, which is responsible for protecting the phone from attacks by viruses or hackers.
Samsung Pay
For Samsung, the conditions are the same as for other devices on the Android platform. On phones that have been reflashed or contain unlicensed extensions, the technology may not work.
Apple Pay
To make wireless payments on iPhones, the user must be identified using Face ID, Touch ID or a password. Otherwise, the principle of operation is the same as on all other devices. Complete the security check, enter your card details and confirm your acceptance of the User Agreement.
What is an NFC module in a smartphone?
NFC in Honor and Huawei phones is a module that enables contactless transfer of information between two devices. In 2021, it is actively used in phones and fitness bracelets (smart watches). But not in all of them. Since the technology is expensive, it is found only in devices above the average price. Gradually it becomes more accessible, and it is being introduced into other models of gadgets.
Peculiarities:
- reads codes and tags;
- makes contactless payment through communication with a terminal at a distance of several centimeters;
- transfers files (a more modern analogue of infrared or Bluetooth).
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In practice, you no longer have to carry several plastic cards with you, since you can pay with your phone. This is especially convenient for clients who have accounts opened in different banks.
How does it work
A special part is installed inside the smartphone - a radio module. It is she who establishes a signal with another such radio module - in another phone or terminal. After the signal is established, the owner starts the transfer, and the other party receives the information - money or files. In practice, everything is very convenient and fast. The transaction takes only 5-10 seconds. Compared with similar information transmission systems, this one is the fastest and safest.
