NFC capabilities

NFC features

First of all, it is worth noting that you can use NFC communications to pay bills and purchases. To do this, Google offered the Wallet application. Many banks have supported the idea of ​​contactless payment by phone. N FC adapters are installed in terminals for cashless payments in shops and cafes.

In addition to how to use NFC on your phone as a payment method, you can exchange data between devices. It was said above that the speed of such a connection is very low by modern standards – about 400 kbps. Therefore, the technology of combining communication methods was invented. With the help of NFC, devices “recognize” each other, and a connection occurs, and further file transfer is carried out via Bluetooth or wi-fi direct. This provides the possibility of exchanging at high speed, and the connection occurs only by touching the back covers of smartphones.

At the same time, work with NFC tags is possible only if it is available in both phones. This is how Android Beam technology works and its Samsung counterpart Sbeam is a great way to transfer data on an Android phone.

Also, with the help of tags, you can quickly transfer contacts from android to another user.

How to enable and use nfc?

Do you often forget your bank credit card? Then in this case, if your Android is equipped with an NFC chip, then it can easily become a credit card!

• Security. Since the range of the chip is limited to 10 cm, no one outside this circle will have access to payment data or transferred files.
• Connection speed. It takes less than one second for a device to connect to another gadget or terminal. In older mobile phones and early smartphones, this procedure took up to 15 seconds.
• Energy efficiency. The NFC chip uses a minimal amount of power in operation. This is important in modern smartphones, which do not show the highest autonomy.
• Convenience. With this technology, routine operations are simplified, and you spend less time on them. To establish a connection with another device, a simple second touch is enough.
• Versatility. NFC technology is compatible with many other contactless solutions and can work (albeit with limitations) even when the smartphone is turned off.

Open the settings menu of the mobile device, select the “Wireless networks” / “Wireless communications” section and find the item of the same name there. Most often, it is hidden in the “More …” tab. To activate the function, simply check the box that allows the exchange of information when the smartphone approaches another device or terminal.

If there is no NFC item in the section with a list of wireless networks, then the smartphone does not have this chip. Many manufacturers of mobile gadgets advertise this feature and place the name about it on batteries or back covers (as in Samsung), or even directly on the body (as in Sony). However, this is more of an exception than the rule.

The above methods are only suitable for Android smartphones. In Apple devices, the NFC chip appeared in the iPhone 6. At first, it was used only for the Apple Pay service, but in the latest smartphone models, the reading mode is additionally supported.

At the moment, there are 3 main ways to use the technology, so the question of how to use NFC should not be inconvenient. Equipment owners are offered:

• pay with gadgets in stores;
• launch applications and programs using tags;
• transmit information using NFS instead of Bluetooth.

Knowing what NFC is in a smartphone, users should understand that there is no need to worry about the security of personal data or finances. If you do not do stupid things and take the protection of personal information seriously, there will be no trouble. And with an irresponsible attitude, even the most reliable and secure system will not help users.

In the settings and menu of the phone there is a group of parameters “Wireless networks”, click “More” – the list of parameters will open. The NFC item can be turned off, you need to switch the toggle switch on the screen to the “On” position. The NFC setup on your phone is now complete.

How NFC works in the phone

The NFC phone’s wireless communication system works on the principle of electromagnetic wave conversion. The circuit resembles a classic detector receiver.

There are two types of NFC tags:

1. Active – require an additional power supply and control, they can transmit any signals.
2. Passive – operate without power and contain specific immutable information, i.e. they can only transmit a pre-programmed signal.

Consider the example of the connection of two phones.

There is a coil and a capacitor, which are an oscillatory circuit; the diode detects an external magnetic field and sends this signal to the reader – this is the circuit of the NFC tag.

There are two devices with such labels, when you bring them to each other, the label of one of them induces its vibrations to the second label – they are detected and the second device “responds” to the first one. Thus, the process of data exchange, identification, etc. is cyclically repeated

This is a generalized working principle of the NFC system in the phone.

Pros and cons of paying by phone

Contactless payment is the most popular. Buying goods and then transferring money through a smartphone has a number of important advantages:

• simplicity of the process;
• possibility not to carry a card;
• reliability and security of financial transactions;
• constant availability of a source of funds at hand.

There are no obvious disadvantages of an electronic payment instrument, since all existing weaknesses are also present in standard bank cards.

Cheap NFC phones under 15,000

We will look at the most popular models of powerful, stylish and high-quality phones with NFC technology support in 2017. Let’s start:

1. Samsung galaxy S. Its price at the time of writing is about 650-700 dollars. Display – 5.5, 8 core processor, 32 GB of memory and 4 RAM. The metal case is a modern appearance and additional protection of the internals of the device. Powered by 8-core processor from Samsung, clocked at 2.3 GHz.
2. Sony Xperia XZ Premium – $750, slightly more expensive than Samsung. It has twice the amount of memory – 64 gigabytes and a more powerful camera of 19 MP, versus 12. The processor from Qualcomm has 8 cores operating at a frequency of 2.45 GHz.
3. The LG H870G6 costs $750, but its display is larger at 5.7 inches. Processor from Qualcomm 4-core 2.35 GHz. 64 GB of storage and 4 RAM ensure stable operation, and a 13-megapixel dual wide-angle camera ensures good photo quality.
4. XIAOMI Mi6 6/128GB costs $600, its powerful 2.45 GHz 8-core qualcomm processor, 6 GB of RAM and 128 GB of memory turn the smartphone into a real multimedia center for games and any applications.
5. Samsung galaxy A7 is the cheapest in this list, it costs less than $400 and is therefore quite popular. A good processor from Samsung, although slower than on previous copies – it has 8 cores, and a frequency of only 1.8 GHz, in conjunction with 3 GB of RAM and 32 GB of permanent memory, made it an excellent phone for the Internet. In addition, it has protection against dust and water, a good camera and good performance.

The list of smartphones with NFC was compiled from popular phones priced over 20,000. Not every user will choose a fairly expensive phone, either for financial reasons or for some other reason. Is there something cheaper?

As mentioned earlier, phones with near-field communication technology filled almost all price segments, including budget phones. We offer you to get acquainted with phones in the segment up to 15,000 that support NFC, and their prices.

1. Nokia 5 Dual Sim – costs almost 250 dollars, it has a normal, but not so up-to-date processor – Snapdragon 430, 8 cores with an operating frequency of 1.4 GHz, runs on android A 13 MP camera will allow you to make good clear pictures.
2. Motorola E Plus XT1771 – $200, cheap MTK 6737 quad-core processor, good battery life – a great phone for everyday use for undemanding users.
3. Sony Xperia X – a real $250 background camera, a good lens and a 23 MP sensor – will make your photos bright and sharp. The 6-core Snapdragon 650 and 3 GB of RAM will allow you to play even modern demanding games.

Three decent NFC phone models that almost anyone can easily buy.

Functions of NFC technology in everyday life

NFC chips can be found in price tags in supermarkets or in museums on information plates, when scanned, you will be redirected to a web address with additional, complete information about the product or stand.

That’s it! Stay with the Android 1 site, it will be even more interesting! For more articles and tutorials, see Articles and Android Hacks.

In everyday life, NFC functions are related to running programs and applications. As a result, technology users are able to:

• instantly launch navigators;
• set up quick access to virtual services;
• turn on a kind of alarm clock, reminding you of important planned actions and affairs;
• speed up the process of launching equipment and programs.

The final appointment depends on the desires and fantasies of the user and has practically no restrictions (within reason and the capabilities of phones).

For payment

The most important function, as mentioned above, is the use of mobile as a convenient payment tool. To pay for purchases in the store, you will need:

1. link a bank card to a gadget;
2. bring the device to the terminal (as a standard “plastic” with PayPass technology)
3. wait for the payment information to be read;
4. enter the pin code.
5. After that, it remains to pick up the paid goods.

In the house

The use of NSF in the home depends primarily on the user’s imagination. Those wishing to take advantage of the system’s capabilities are able to:

• automatically turn off wi-fi when leaving the apartment;
• launch an application with a notebook in the morning;
• turn off unnecessary options before going to bed;
• turn on the alarm.

The above list is just an example, since the full list of possibilities is much wider. The main condition for using this service will be a connection with the phone, without which it is impossible to program the execution of pre-selected tasks and the launch of utilities and useful services.

device with configured service;

with a label located in the right place (they will be discussed below).

To start or turn off wi-fi, you need to do just a couple of actions:

1. bring the cell phone to the mark;
2. wait for it to be read;
3. after which the device will perform the task provided for by the settings.

You won’t have to do anything extra, because the connection to the Internet (or the disabling of traffic distribution) will already happen.

In the office

The process of using appliances in the office is not much different from using appliances in everyday life and at home. The main benefit that office workers can get is the automation of part of the work processes. Thus, employees are able to turn on some of the systems that are important for their activities with the help of NFS tags with one touch. As a result, the time required to activate workflows is saved.

An alternative way to benefit is through the transfer of small files and documents. But it is relevant for employees working in close proximity to each other.

In the car

The most obvious benefit from the presence of NFC tags in transport will be the automatic inclusion of navigators on smartphones mentioned above. Drivers and motorists just need to bring the device to the desired point of the car and wait until the system opens the map and builds a suitable route. It is unlikely that such an action will save a lot of time, but it will certainly simplify the life of car owners, saving them from the necessary procedure for launching GPS navigators and giving them the right to use the online service without unnecessary worries.

Which banks support contactless services?

Having dealt with the benefits of NFC technology in everyday life, you should return to its usual purpose – use as a payment instrument. To pay by cellular in stores and pay for services with one touch, several conditions must be met:

• the device must have a special chip;
• the operating system must support the operation of the utility;
• binding of a bank card is obligatory;
• the bank must join the financial system and allow contactless transactions for customers.

Google Pay is the most common version of the mentioned online financial service that works on devices with the Android operating system. They are closely connected to the Google app store and use all the extensions and additions provided by the digital corporation. At the same time, the payment process does not have obvious differences and important characteristic features, and therefore the main detail that distinguishes it from the general background will be compatibility with the Android platform.

Apple Pay is a full-fledged analogue of the online service from Google, which differs from it only by the manufacturer – Apple Corporation and compatible devices where the utility is used. Similar devices, as indicated by the name of the manufacturer, will be the iPhone and other similar devices. The principle of payment, despite the change of the developer, will remain unchanged. It is enough to attach an iPhone to the terminal and wait for the transfer of financial information.

Samsung Pay is the third type of online financial system that allows you to pay for goods and services in stores. Looking at the name, it is not difficult to guess what its most important distinguishing feature is. Samsung Corporation uses its own developments in the manufactured equipment, which include Samsung Pay.

Microsoft Pay

Not much different from what Google and Microsoft Pay offer. And the most important distinguishing feature is again associated with the manufacturer. The mentioned online system is used on devices where the Windows platform is used as the basis. Naturally, differences in approaches give rise to other distinctive nuances and details that distinguish programs from different developers. But most of the differences are “cosmetic” in nature and will not affect the process of transferring funds.

It makes no sense to list banks and financial organizations that allow you to pay for purchases without using “plastic”. The list is huge and includes not only the flagships of the banking sector, such as Sberbank, but also regional institutions, such as Ak Bars. Therefore, those who hope to get rid of the card are advised to call the contact center of the institution they need and clarify the required information with support operators.

Which Chinese phone with NFC should I buy?

Inexpensive phones with NFC support can be bought literally for a penny. Chinese phones with near-field communication can be ordered directly from China, thereby saving quite a lot. Popular now Xiaomi brand produces models in different budgets, ranging from cheap to expensive. Which xiaomi has NFC support? In fact, there are quite a few of them, pay attention to the line: Mi4, Mi5, Mi6 and others – they all have this function.

The cheapest rugged phone with NFC is AGM A8, waterproof and runs on android 7 and quad core MSM8916 – you can buy it in the range of $150-200.

How do you know if your phone has NFC?

Your smartphone may have this useful technology. To find out if your phone has NFC, you can remove the battery cover – there should be a corresponding mark on its sticker. If you don’t see Near field Communication on the battery, what should you do? How do I know if my phone supports NFC?

Go to the following path in your phone: settings – wireless (connections). There should be an NFC item in this menu – you need to enable it, Android Beam should also be automatically activated. Otherwise, you simply do not have this communication function, but this problem can be solved. Now you know how to check if your phone has NFC, let’s see how to install it in android.

Tags

As mentioned above, the application requires NFC tags. They are small sticker devices that store a small amount of information and transmit it to a nearby device. They work from the magnetic field generated by the telephone. This is what makes them “near field” communication devices. They become active only when the magnetic field approaches, which surrounds a small area around the cell.

In general terms, a description of the main principles of operation is presented above. To the above, it should be added that the circuits used for data exchange are tuned to a certain frequency, which allows them to work with maximum efficiency. And the amount of energy received limits the scope of their action to 10 centimeters (often the distance is even less).

Types of tags

Currently, there are 4 types of NFC tags, differing in basic operation parameters. They do not have a specific name, while a brief description of each contains:

• the first one – 48 bytes of memory and transfer rate up to 106 Kbps;
• second – 2 Kb and transmission level limit – 106 Kbps;
• the third one stands out with an increase in bandwidth up to 212 Kbps;
• the fourth with a memory of 32 KB and a speed of 424.

To set a task on an NFS tag, you will need:

1. turn on the application on the phone to use the technology;
2. read the mark by bringing the gadget to it;
3. select the action to be taken when a connection is established in the future;
4. save the set work pattern.

What to do if there is no NFC – NFC antennas and modules for the phone

Don’t be discouraged if you don’t find the NFC feature in your phone. If structurally, an NFC antenna for your phone is an alien concept, do not despair, there is a simple solution. Install the NFC module. You just need to find a SIM card with an NFC chip on sale and install it in your phone.

This NFC SIM card can be installed to make payments with your phone.

Another way to install an NFC module in your phone is to equip it with a full-fledged NFC antenna. It is glued to the SIM card, and the other half is placed under the cover of the smartphone. This conversion adds a lot of possibilities for working with this technology.

Now you know what to do if there is no NFC!

In line with the advantages of this unique technology – low energy consumption and low cost of implementation, there are some disadvantages that appear immediately after the start of use. And if you want to use it, you definitely need to know about them.

Some will have to be put up with while waiting for the idea to be finalized, and some are forced to reduce the scope of use. The first of them is a small radius of signal action. On the one hand, this creates inconvenience, for example, if you need to organize pairing as quickly as possible, but on the other hand, this can be taken as a plus. This provides a sufficiently high degree of security, minimizing the possibility of accidental execution of the action.

But there are more serious minuses. There are no clear standards, so technology modifications increase uncontrollably. For example, the manufacturers of Sony and Haomi are finalizing the transmission function, creating their own consumables that can only work with devices of their production. So the user is in a narrow framework, he has to take devices that have NFC development and download software suitable for a specific gadget.

The main disadvantage is that if you lose your phone or it is stolen from you, you can also lose money, because it is easy to empty accounts.

There is no single place where the module needed by users is located. Its location depends on the model of the smartphone and the manufacturer of the equipment. To clarify the correct place, it is recommended that you read the instructions that came with your cell phone and find the necessary information in it. There are no other ways, but it should be emphasized that usually the module is behind the back panel, not far from the SIM card slot.

Conclusion

Modern technologies not only simplify but also speed up our life and make it more comfortable. This technology will not only save time, but also do it very safely.

The security of the connection is guaranteed by near-field communication, because you almost touch the tags when transmitting data. Applications that use NFC technology allow you to use the gadget not only for payment, but also to change phone modes when you read the tag. You can place tags in your car, house, bedroom, and set which parameters will match which tag – this will greatly automate your device.