All about NFC of your phone! How to use NFC?

All about NFC of your phone! How to use NFC?

Have you ever heard about NFC? Whenever it involves online payment, there's definitely a discussion about the NFC. Yes, friends, I'm talking about One and only NFC that's utilized in systems like Samsung Pay and Android Pay. -*

This feature was often utilized in high-end devices but it's also available in mid-ranged. Perhaps you have also heard this acronym, but do you know what is NFC, how does it works, and where it is used.

Perhaps you've got also used NFC because you'll see it in most new smartphones nowadays. But even after using it, there are only a few people that have complete knowledge about it.

 It may sound a little scary to listen to, but in reality, it is very easy to understand and it is a very useful thing. Where earlier it was present in only a few expensive phones, today it has started being present in almost all smartphones. 

So today I thought why not we give you all the information about what is NFC, so that you people get information about this technology and you will be able to understand and use it better. So let's start without delay and know what this NFC is and how it works in Smartphones.

what is nfc in oneplus

What is NFC:

After all, what does NFC mean? The full form of NFC is "Near Field Communication". And as its name suggests, short-range communication can be between any two compatible devices. RF signals are used for this communication. 

This communication needs at least one transmitting device to complete, and a receiving device to receive the signal. As we have already known that NFC means Near Field Communication. The main purpose of NFC is that it is used to interact with the surroundings of your phone.

It operates only up to close to a radius of 4 cm and provides a wireless connection between your device and each other. In this technology, two-way communication allows, wherein both devices you can send and receive information. 

This NFC connection does not depend on any technologies such as Wi-Fi, 3G, LTE or any other and you do not have to pay any money to use it.

NFC is born of RFID. Radio-frequency identification (RFID) is a technology used in shipping companies, large warehouses, and superstores to track goods. 

It uses electromagnetic induction to transmit the information in a short space so that just after scanning a container it is known what is in it.

NFC is also a similar technology, but it has been standardized for consumer smartphones. NFC standards have been defined by a group, also known as the NFC Forum, and include large companies such as Nokia, Sony, and Philips. 

At the same time, if the feature of NFC is present in your phone, then by using it you can transfer data between phones and NFC readers.

Near Field Communication Technology Overview:

NFC has been developed by Sony, Nokia, and Philips in which many forum monitors have also been aligned and these regulate this NFC Standard. Near field communication always operates only in the low power and low-frequency range.

Frequency: 13.56 MHz

Range: 0 to 10 CM

Specification: ISO / IEC 14443 (which is for smart cards that store information) and ISO / IEC 18000-3 (which is used in RFID tags of smart devices)

Types of NFC :

There are mainly two types of NFC.

•Active NFC Device.

•Passive NFC Device.

Active NFC Device:

Active NFC devices are those devices that can also send and receive data and with this, they can also communicate with each other whether they are active devices or passive devices. An active NFC device requires a power source to function. 

They have the ability to process information. For example, Smartphones are the foremost common sort of lively NFC device. Apart from These, public transport card readers and touch payment terminals are also excellent examples of this technology.

 Passive NFC Device

Passive NFC devices are those devices that can send information only to other NFC devices. They do not need any external power source for their operation. Apart from this, they do not even have the ability to process the information. 

 They also cannot connect with other passive components. For example, they are more used in tags and other small transmitters, which are used as interactive signs on walls or in advertisements.

Working Principle of NFC:-

By now we have already known that what is NFC? But we do not know yet how it works. well like Bluetooth and WiFi and other wireless signals, NFC also sends its data through radio waves. Near Field Communication is a different standard for wireless data transitions. 

This means that devices have to comply with certain specifications to communicate with each other. The technology used in NFC is derived from the older RFID (radio-frequency identification) ideas, which previously used electromagnetic induction to transmit information.

This reveals one more thing that it shows the difference between NFC and Bluetooth/WiFi that NFC is used to induce electric current in passive components and to send data. This shows that the passive device does not require its own power supply to operate. 

They get power when an active NFC component passes through them or comes within their range, then automatically an electromagnetic field is produced which generates power. But the sad thing is that with the help of NFC technology, there is not enough inductance that can charge your smartphones.

The transmission frequency of data in NFC technology is 13.56 megahertz. You can send data in it at a speed of 106, 212, or 424 kilobits per second. If seen, this is sufficient for small data transfers such as sending contact details, pictures, or music, or for making payments. To determine what type of information is exchanged between two devices, the NFC standard is therefore divided into three distinct modes of operation.

Peer-to-peer (e.g. for file transfers )

•Reader/writer (e.g. to read the tags of NFC posters )

•Card emulation (e.g. for payments )


This is the most used mode. It is mainly used more in smartphones. It provides support for exchanging information between two NFC-enabled devices. In this mode both the devices switch while sending data in active mode and while receiving passive data.


Read/write mode, is one-way data transmission. Here the active device, which can also be your smartphone, links up with another device to read information from it. This mode is used in NFC advert tags.

•Card Emulation:

This is the final mode of operation. Here the NFC device can be used as a smart or contactless credit card and payments can be made easily by tapping on public transport systems.

How NFC works in Android?

NFC transmits and receives data through radio waves. It is an established standard of wireless communication, so if any devices stick to these NFC protocols then they can easily communicate with each other. 

It is slightly different from working of Bluetooth as it works through electromagnetic induction. A good example of this is that there are some passive devices, such as posters or stickers, that do not require any external power source to work and can easily transmit data to an active device such as a smartphone when it comes in their contact.

As an active NFC device, a smartphone can send and receive data via NFC. It mainly works in three modes:

1.Reader/writer (e.g. posters to read the tags NFC)

2.Card emulation (e.g. for payments )

3.Peer-to-peer (e.g. for file transfers )

How to use NFC easily?

Like Bluetooth, NFC requires neither manual pairing nor device discovery for data transfer. A connection to NFC starts automatically when another NFC device comes within the 4-inch range of another NFC device. Once both the devices are in the same range, they communicate with each other instantaneously and send prompts to the user. NFC has a lot of usefulness. Here below, I will tell you about some methods where NFC is used between two devices.

•Digital Wallet: When you bring your smartphone closer (within 4 inches) to a payment point or contactless reader, your wallet or passbook will ask you to confirm the payment. Once you confirm, the transaction becomes successful.

• Sharing between Android Devices: When you keep two NFC enabled devices in range, you will receive a message prompt asking whether you want to "beam" your contents (videos, contact information, or photos) to someone else. to android device. With this, you can easily share your files.

•NFC Chips: These “taps” can be programmed to perform specific tasks with the help of some apps such as Tasker when they are scanned. For example, when you put a similar chip in the desk and scan it, it works to stabilize the phone, such as vibrating the phone, disabling GPS, or just turning on work-related notifications, etc.

How to know if your Android smartphone has NFC?

This is very simple. For this, you have to follow the instructions on your phone which are given below.

Settings > More or Settings > Wireless & Networks

After doing this, if you see any NFC option, then it is known that your Smartphones have an NFC option. This option is often hidden, so it is not visible. Apart from this, in almost all smartphones nowadays you can see a small NFC logo on the rear panels.

Some problems used in Android:

 Not all devices have an NFC chip, due to which there is some problem in its use, but gradually it has become very common and these features are being provided in almost all devices.

Often due to not having NFC chips all in one place, they rub with each other.

 In this, cross-compatibility is not universal within devices, it occurs in some specific file types that create compatibility issues.

Advantages of NFC:-

1. Convenience

Most of the consumers want convenience while paying. In today's society, people like spontaneity more. NFC is a much better option in this matter. This helps your mobile device to merge with the wallet. NFC plays an important role in this process as payment can be done with just a simple touch. With this, you can imagine how long lines of grocery stores can be easily ended very quickly.

2. Versatility

NFC can be adapted to all situations. You speak about any situation whether it is for transit passes using bank cards, movie passes, reward systems, or keys. Ideally, NFC can be used in a broad range of industries.

3. Better Customer Service

With the advent of NFC, many tasks become automated, which accelerates customer service. This gives companies more time so that they can provide even better service to their customers.

4. Real-Time Updates

Since real-time data can be fetched from many places with the help of NFC, many tasks can be easily maintained. It doesn't even require many people.

5. NFC-enabled credit cards are more secure than a credit card or magnetic strip.

6. In this, a PIN is required to process the transaction, which makes it more secure.

7. Retailers do not have credit card information as they do not have physical access to your credit card information.

Disadvantages of NFC:

1. Problems with Company Agreements:

 NFC says that it can be used anywhere and anytime. But this is not completely correct because many companies prohibit the use of NFC, so sometimes problems arise in company agreements.

2. Security

Since NFC completely merge with mobile phones. So if ever the phone is hacked by hackers then they can leak all your confidential information. Therefore NFC is not considered more secure.

3. Implementation issue

Since many devices do not have the feature of NFC, so it is not easy to implement NFC properly.

4. Costly

This technology is a little more expensive than the other. Due to being more costly, many businesses do not like to adopt it.

Read more:

Applications of NFC:-

There are many applications of NFC, but here I am going to tell you about some such applications.

1. Smart Cards

Making payments using NFC integrated smart cards makes it easier and better than the conventional multiple-step payment process. Top payment services such as Visa and MasterCard also nowadays provide NFC embedded smart cards to their customers.

NFC integrated smart cards are used for fast payments in grocery stores, parking tickets, adding shopping points, redeeming coupons, etc. The use of NFC integrated chips is being promoted in all major banks all over the world.

2. E-wallet (payment using a smartphone)

Cashless payment systems are becoming very popular through mobile devices. They are providing more convenience to the customers. Service providers are now integrating the payment option with smartphones, for which they are embedding an NFC tag into the device. Apple pay, Google Wallet (Android pay) and Samsung pay is very popular among these smartphone payment systems.

3. Smart Ticketing

By using integrated smart chips, it is replacing traditional ticketing systems with smart tickets. Due to this, passengers of airlines, trains and buses are getting a lot of conveniences. Along with this, NFC tags are also used in smart posters, movie tickets, a ticket to concerts, advertisements, flyers and information links.

4. Medicine and Healthcare

NFC integrated system is used in medicine and healthcare activities. NFC provides much greater accuracy and convenience while prescribing medicines, making it easier to check-in, make payments, check patient status, track their records.

NFC integrated devices can be easily paired and configured. Medical professionals can easily check schedules and access medical devices and equipment.

5. Keyless Access

Keyless access is a very familiar application for near-field communications. This is a very popular choice due to NFC's convenience and easy-to-implement feature.

NFC and RFID tags can be used to access doors and restricted areas. You can use it to access vehicles like access keys, identification badges, and cars.

6. Manufacturing

Smart tags are used more in modern manufacturing industries. With this, any product can be identified in a company in each of the process stages. Apart from this, products can be tracked correctly during shipment. Having unique identification numbers help the manufacturers to manage their products efficiently and in some cases where the return or warranty period for replacement, service and maintenance are also used.

7. Logistics and Shipping

NFC and RFID tags are used more in the logistics and shipping industry. By using them, they can be tracked correctly so that there are least chances of error in their end.

8. Smart Inventory Management

Smart RFID tags are used for better management of inventories in retail shops and large-scale supermarkets. Smart inventory management software can be easily updated in real-time so that information about how many items are in stocks and when they are going to expire can be obtained in advance.

9. Theft control

RFID tags can be used to reduce theft. Valuable things can be protected with the help of smart tags. Any objects that have smart tags embedded in them will generate triggers if they pass near any RFID proximity. From which information can be found about the theft.

Future applications of NFC:-

By the way, NFC is going to be of great use to us in the future. But before that, let us know about some similar future applications in this context.

1. Smart Home

With the help of NFC and RFID technology, we can convert our normal home into a smart home. We can customize any particular application with the help of our smartphones. Not only this, but we can also control the household equipment of the house by activating the NFC tag located in it, we can control tasks like app launching, access/lock doors, set alarm functions with the help of our smartphone.

2. Internet of Things and 5G

IoT and 5G together create opportunities for many new technologies to emerge. NFC enabled devices are used in IoT and 5G enabled networks, which increases both their implementation and efficiency.

3. Integrated Smartphone Applications

Smart RFID tags can be used to configure smartphone applications. Such as receiving loyalty points from a loyalty program, membership access, entering a restricted area and many customized applications.

Although I have told you everything about NFC, also you can watch the following video for a better understanding!


NFC tags are going to play a very important role in the coming times. It can be used in almost all fields such as smart transportation, aviation industry, shipping, manufacturing industry automation. 

By integrating NFC technology with our modern data communication and transaction process, it makes our work more convenient saves time, increases energy efficiency, and most importantly helps to improve security.

I hope you guys have understood what is NFC and how does it work? This post, given complete information about NFC. I request all of you readers that you also share this information in your neighborhood, relatives, your friends, which will bring awareness among us and it will benefit everyone a lot. I need your cooperation so that I can pass on more new information to you guys.