NFC Connection Error with Network. NFC in the phone what is it. Fare of Public Transport

We began to work in Russia for just a month ago, they have already managed to change our lives for the better. Thanks to them, we stopped digging in wallets, holding down the queue, and "shine" bills in sight. So, in any case, they say those who have already managed to experience all the benefits of contactless payment on themselves. But what to do those who are not available to this privilege?

Despite the relatively widespread mobile services For transactions, many Russians (and not only they) have no opportunity to use them. The reason for this is quite simple and literally lies on the surface - the market of smartphones is not limited to apple devices and samsung. Some prefer to enjoy something less catchy, but certainly more affordable.

There is a lot of ways to turn your smartphone regardless of the manufacturer in the most real wallet. Let's start in order.

The first and, in my opinion, the most preferred - Yandex.Money.

Slightly it is known that the Yandex.Money application for Android supports contactless payments, requiring the client only an NFC module integrated into the smartphone. Care with the replenishment of the wallet with title signs (read - money) is the user himself.

The second method is NFC SIM.

Such releases mobile operator MTS in collaboration with the Bank of the same name. Install the functional card into the smartphone and pay for the purchase with a light touch to the terminal. No one guessed that you have schitri!

Of course, call it a full-fledged replacement. Apple Pay. Still, it is impossible, since transactions are not subject to encryption and do not require identification of fingerprint. In addition, you will still have to make a separate account in the MTS PJSC or the Russian Standard Bank.

However, if you are already the card holder of one of two banks, the problem will volatile by itself. You will only stay to visit the nearest salon. cellular communication or a bank branch where to get the above-described SIM card is completely free.

The method is the third - NFC antenna.

The live antenna looks less frightened

All those whose smartphone does not have a module module in his arsenal, the path to the "Borderless" will be somewhat harder. They will have to either replace the device to a new one, which is irrational or equip its NFC-antenna independently. Contrary to popular view, make it much easier than to represent.

To do this, you need to purchase an external NFC antenna, which is sold in cellular salons, and, by gluing it to the SIM card surface, arrange under your smartphone cover. A small remark: to do this operation will not be able to owners of devices with non-removable back panel and side slot for SIM cards.

NFC bracelets.

Some banks, including Alfa-Bank, are engaged in the release of infertility at the first look of bracelets carrying the NFC chip in their design associated with your personal account. It works exactly by the same principle as plastic cards With PayPass or Paywave technology.

Specify the Bank's representatives on the availability of the respective accessories in their assortment and, having got a copy, remove the chip from the acquired bracelet and just put it in the smartphone or tablet case. Thus, you do not have to not only remember the need to have a wallet with you, but also to worry about the autonomy of the main gadget.

The cost of the NFC bracelet, depending on the bank varies from 500 to 1000 rubles. In the same amount you will cost a case with a small pocket on the back.

NFC technology (Abbr. from Near Field Communication) Allows you to exchange data between your smartphone and other phones running Android OS with NFC support, cycling function Android beam. main feature This technology is a small radius of action (up to 10 cm), which allows you to carry out non-contact data exchange between devices located at short distances: for example, between the reading terminal and cell phone or plastic smart card. For example, you can transfer web addresses, position on the map, applications from Google Play. Market and contacts on other phones running Android OS. Among other things, there is an opportunity to share photos, music and video between phones sony Xperia. As a smartphone user of this lineup, I will talk on his example. Although other companies producing high-tech products are actively involved in the development and implementation of NFC: Google, Intel, Samsung, Nokia, Visa, Mastercard, Citigroup, Barclaycard and others.

I use NFC in a smartphone for quick synchronization With Bluetooth Headphones Sony MDR-1RBT or Wireless acoustic system Sony SRSBTM8. If you have never used NFC, you can activate this feature on your smartphone and attach a subway travel to the subway to see the information about it on the smartphone display. In order not to confuse you, it is worth noting that NFC has a significant advantage over Bluetooth - the rapid connection time of the connection. That is, instead of the "pairing" process (pairing) of 2 devices when using Bluetooth, the connection between the two NFC devices is set immediately (less than 1/10 seconds), but the data (for example, the audio stream in Bluetooth headphones) Will be transmitted to Bluetooth tools. To avoid a long pairing process, NFC is used only to install connections in wireless technology, such as Bluetooth.

As you already understood, as a "medium" NFC chip mobile phone (Smartphone) is not chosen by chance, since the device is mass and always next to its owner. The last trend in the field of NFC was the parallel development of services based on smart cards and mobile devices:

Both of the above options provide the ability to build a universal NFC ecosystem, where the smart card or smartphone with an integrated NFC chip is converted into multipurpose devices, speaking as:

payment Meater (Virtual Wallet)
owner identification tool
bonus card
ticket

The NFC chip may contain large amounts of data, if necessary, encrypting them. Currently, NFC solutions are already applied in many areas. For example, with the help of this technology, there is a reservation and sale of electronic tickets, payment for travel in public transport and car parking, NFC technology is also actively used in the field of services and entertainment. Analyzing the possibilities of NFC, it is safe to predict its potential security in the field of security and access control.

Contactless infrastructure and contactless payments are already quite well developed in the public transport system, quite quickly appear in other industries. Communication operators, mobile device manufacturers, the banking sector and other payment systems are increasingly striving for the use of contactless payments.

The most common device in the world, capable of fully revealing the entire potential of NFC technology - is undoubtedly a mobile phone. In combination with NFC, it is able to combine the entire functionality of options and services, which only can provide the use of smart cards.

Perhaps today, the ubiquitous use of NFC seems futuristic, but in the near future this technology will firmly enter our life - just like Wi-Fi, Bluetooth, USB.

To existing functionality smartphones Sony C. nFC technology It also includes the possibility of scanning the NFC label. Tags NFC. There are small programmable information zones that can be used in shopping and promotional areas: embed in posters, all kinds of advertising shields, as well as on the shelves with products in retail stores. Touching the label, you can get additional information: Maps, Web addresses and trailers.

NFC Function activated when contacting two devices with support for this technology. The maximum read distance is about 1 cm, which avoids a false response of the function.

How to transfer a file using NFC technology? (on the example of xperia p)

Contact contact to another phone using NFC

To view contacts in the phone, on main screen Touch the "Application Screens" icon, and then the "Contacts" icon.
Select the contact you want to send.
Position transmitting and receiving phones rear parts To each other so that their NFC recognition zones come into contact. After installing the connection, the phones are curled and sufficed short sound signal. A miniature of contact will appear.
Upon completion of the transfer contact Information It will be saved on the receiving phone and displayed on its screen.

Broadcast music file. to another phone with NFC

Make sure that both phones are included nFC functions And Android Beam and that the screens of both phones are active.
To open the Walkman ™ player, go to main screen , Touch the "Application Screen" icon, and then select Walkman.
Click the tab MY MUSICTo open the library.
Select the music category and find the track you want to send.
Touch the track to play it. Then you can touch the "Pause" icon to suspend the playback of the track. Transmission is possible when the track is played or suspended.
Position your phone and the receiving phone with the rear parts to each other so that their NFC recognition zones come into contact. After installing the connection, the phones will depend a short beep. A thumbnail will appear.
Touch the miniatures to start the transmission.
Upon completion of the transmission on the receiving phone, the music file will automatically begin. At the same time, the file will be saved on the receiving phone.

Note. Copying, sending and transmitting objects protected by copyright may be impossible.

Transfer photos or videos to another phone with NFC

Make sure that the NFC and Android Beam functions are included on both phones and that the screens of both phones are active.
To view photos and video stored on the phone, go to main screen, Touch the "Application Screen" icon, and then select Album.
Touch the desired photo or video.
Position the transmitting and receiving phone with the rear parts to each other so that their NFC recognition zones come into contact. After installing the connection, the phones will depend a short beep. A thumbnail will appear photos or videos.
Touch the miniatures to start the transmission.
When the transfer is completed, a photo or video will be displayed on the receiving phone screen. At the same time, the object will be saved on the receiving phone.

Transferring web addresses to another phone with NFC

Make sure that the NFC and Android Beam functions are included on both phones and that the screens of both phones are active.
Touch the "Application Screen" icon on main screen.
To open a web browser, select Browser.
Load the web page you want to pass.
Position the transmitting and receiving phone with the rear parts to each other so that their NFC recognition zones come into contact. After installing the connection, the phones will depend a short beep. A miniature of a web page appears.
Touch the miniatures to start the transmission.
Upon completion, the web page will be displayed on the receiving phone screen.

September 9 Apple announced smartphones iPhone. 6 and iPhone 6 Plus, one of whose features was the NFC chip and the Apple Pay technology based on it. In the presentation, the main emphasis was made on the possibility of contactless payments with the help of a smartphone, but in fact the possibilities of NFC do not end and have long been used and successfully used in Android smartphones to perform many different tasks, ranging from paying a trip to the metro and ending with automation Smartphone.

Instead of administration

NFC is decrypted as Near Field Communication or "near contactless communication", if in Russian. In essence, it is a small chip that can be embedded in a smartphone to transfer data to very short distances with a very meager speed. NFC is very close to RFID technology, which has long been used for marking products in supermarkets, but is based on its later ISO / IEC 14443 (smart card) and designed for use in portable electronics (read: smartphones) and safely safe Transactions (read: paying purchases).

As with the ISO / IEC 14443 standard, the NFC range is only 5-10 cm, but the difference is that the NFC chip is able to perform the tag and reader function at the same time. In other words, equipped NFC Smartphone It can be like a smart card (Metro Metro, for example), which is enough to bring to the reader to pay, and the reader itself, which can be used, for example, to transfer funds between smartphones cards and turning real-world cards with ISO / IEC standard 14443 in virtual.

But this is only "one of" and the most obvious use of NFC. Due to the fact that the NFC chip is able to transmit data on both sides and does not require devices authentication, it can be used as a simple and more convenient replacement for Bluetooth. With the help of NFC, for example, you can share links, passwords, contact and other data between smartphones, simply raising them with each other.

The BEAM technology appeared in Android 4.0 expands the borders of the NFC application, allowing you to quickly transfer entire files and folders between devices, which is achieved by pre-authentication of Bluetooth devices via NFC and the subsequent Bluetooth connection and sending files. As in the previous case, everything that is required for transmission is to simply bring the phones to each other. IN sAMSUNG firmware This feature is called S-Beam and allows you to use as a "transport channel" not only blue-fi, but also Wi-Fi (one of the smartphones turns into an access point).

Another possibility is the use of passive NFC tags. Such tags in the form of small stickers can be purchased for half a dollar apiece and reprogram using a smartphone. Each of them can accommodate 137 bytes of information (in the case of the most common and cheap MiFire Ultralight C) tag, to read which again it is enough to simply bring the smartphone. In the tag you can write a password from home wi-fi And glue on the router. Or the code word to which the smartphone will react. You can organize the automatic launch of the navigator when installing the smartphone into the holder in the car or the inclusion of silent and energy-saving modes when the phone is on the bedside table. A small list of purchases in 137 bytes is also quite fitted.

In this article, we will talk about all the possible applications of NFC in practice, but since in our country the payment of purchases with its help is implemented about anywhere, then it will be advantageously on the automation based on labels.

Support in smartphones

The first telephone with integrated NFC support was Nokia 6131, released back in 2006. Then the built-in NFC chip was just a toy to demonstrate the capabilities of the technology created two years ago. The smartphone was equipped with a software for reading NFC-labels, but in view of their high costs and almost zero popularity of technology for no serious use. this feature Smartphone did not claim.

After some calm popularization, NFC took up google Company, released in 2010 Samsung Nexus S smartphone and app Google Wallet.which allowed to pay virtual credit cards using NFC. On the next year Google I became the lead member of the NFC Forum and introduced Android 4.0 and the smartphone based on it Samsung Galaxy Nexus, which could now boast the presence of the very function of the Beam. Nexus 4 appeared later, and finally started tightened by other manufacturers.

Today NFC is equipped with almost all manufactured smartphones. The corresponding module is even in MediaTek superb budgetary chips, so most of the new chinese smartphones The cost of 5000 rubles is also equipped with them. In any case, the presence of the NFC chip is easily verified by the presence of item " Wireless networks -\u003e NFC "in the settings.

Play with tags

Where to take tags? As I said, the easiest option is to just order them in China (DX.com, TinyDeal.com, Aliexpress.com). The cheapest tags in the face of MiFire Ultralight C with 137 memory bytes will cost approximately five dollars in ten pieces. You can also get a signature tag from Sony (SmartTags), however external view And the prices that will be three to five times higher, they do not differ anywhere. Another option: Tectile tags from Samsung with even higher price tag, but also a large amount of memory (716 bytes). But here you need to be careful, the first version of the tag is compatible only with NFC controller from NXP, so that with most smartphones they will not work.

As a tag, you can use tokens and metro maps for multiple trips. Often, part of the memory in them remains free to record, so that any info can be placed there. But even if it is not the case, the tag can still be used as a trigger action, simply adjusting the smartphone reaction to a unique tag ID.

Without additional software in Mobile OS there are only limited support for "communication" with tags. The same Android does not offer any means to work with them. All you can do is just to bring the tag to the smartphone so that I read it. Depending on the type of data recorded in the data tag, the smartphone can output this data on the screen (type "text" or not supported), open a webpage (URI type), start the application (Special type Android.com:pkg, supported only in Android) , Open a dialer with the specified number (URI type "Tel: //") and perform some other actions.

The means for changing the tags themselves or the behavior of the smartphone in response to their detection in Android is not, so we will have to acquire additional software. Three applications that we will use:

NFC Taginfo - reader tag that allows you to get the most complete information about the tag and data recorded in it;
NFC Tagwriter - branded app from the leading manufacturer of NXP Semiconductors tags;
Trigger - allows you to independently determine the reaction to the tag with the ability to transmit control in Tasker.

NFC Taginfo.

To begin with, we'll figure it out that we got for the tags. The Chinese usually do not report any details on this account, and I generally keep quiet about the metro maps. Run NFC Taginfo and bring your smartphone to the tag. Next, we tapa on the TAG INFORMATION point and look at the screenshot "I read the NFC-tag") that we have:

UID is a unique tag identifier;
RF TECHNOLOGY - standard supported by tag. In this case, this iso / IEC 14443 Type A, that is, the usual RFID tag with support for the first version of the data exchange protocol (Type A);
Tag Type - type (or, it is better to say, "model") tag. In this case, NTAG203 is Mifare Ultralight C, the cheapest on this moment tag. The letter C means the support of the cryptographic protection data. There is still Topaz 512, which accommodates 450 bytes of information, and Mifare Classic 1K (716 bytes) used in Tectile tags and often in the metro maps;
Manufacturer - tag manufacturer. NXP SEMICONDUCTORS - 90% of all NFC tags do they (MIFARE family).

Now we return back and go to the NDEF information menu. NDEF is one of the NFC standards, which describes the storage format in the memory of the tags and its transfer to the reader. The tag may contain several NDEF messages, each with its identifier and type that the smartphone can determine how to interpret the data contained in it. The type is set in the format of URI, MIME or Domain: Service, if we are talking About some specific type of reader (for example, the same android.com:pkg).

In the NDEF Information menu, we first interest the Maximum Message Size strings (useful tag volume), IS Tag Writable (Record Support) and CAN TAG BE WRITE-PROTECTED (write protection support). The latter option allows you to block the tag record for all devices except our. In addition, the tag can be blocked forever so that it can never be written again. In this case, no option will be indicated in the penultimate option.

What is inside the tag?

From the technical point of view, the NFC tag is a microcomputer like those that are inside SIM and bank cards. There is a processor, operational and constant memory, but there is no traditional power source. Electricity It receives through electromagnetic induction, which occurs between the reader antennas and the label, as well as it occurs in wireless chargers and passive radio receivers. Due to the ultrammal level of energy consumption, the power of such a "transformer" is quite enough for the normal functioning of the microcomputer.

The antenna takes about 99% of the tag area and transmits data at a frequency of 13.56 MHz at a speed of 106, 212, or 424 kbps. NFC standards define multiple data transmission protocols, including several implementation of the data exchange protocol (they are denoted by the letters a, b and so on) that can be supplemented by the manufacturer of the label itself. For example, Mifare family labels implement a number of extensions over the standard protocol, which is why the incompatibility can be seized between applications and label (but it is rare).

Data security is provided by several paths:

Small range. Ten centimeters is a very private zone.
Cloning protection with a unique serial number.
Ability to protect against overwriting and protecting data password.
Optional data encryption in memory and transmitted.

The leading manufacturer of NFC tags is NXP Semiconductors. They produce tags of the Mifare family, which are so popular that there are not only other tag manufacturers, but also manufacturers of NFC chips for smartphones (at the level of tags emulation). The family includes several different models, ranging from the simplest Mifare Ultralight C and ending with Mifare Desfire EV1 file System With the support of cryptography and flexibly customizable access rights.

Go to the NDEF Message menu. If the tag contains any data, they will all be displayed here with a breakdown to messages. The remaining NFC Taginfo options allow you to view the information about the memory of the tag: the actual volume, dump in HEX and ASCII formats, access rights to memory pages and so on. I recommend to return to these options after writing to the data tag.

We write data

For data recording, we will use the NFC Tagwriter. Use the application is quite simple. We run, taping on the Create, Write and Store point, select New, then select the type of data recorded. Most useful types: contact, simple text, telephone numberdata for Bluetooth connection, URI and application. The list there is even a web browser tab and an email message, but for what they need, it is not entirely clear.

Further fill necessary fields (For example, the address of the website is in the case of the URI), click Next and fall on the Options Screenshot (NFC Tagwriter Screenshot: Message options). Here you can specify an application that will be started after reading the tag (Add Launch Application) and set overwriting protection third-party device (Apply Soft Protection). The application also takes care to inform us about the tag models capable of accommodating this data (in this case, all OK, NTAG203 is in the list).

Press Next again and bring the smartphone to the tag. Voila, our data is in it. Now they can be read by any smartphone with NFC. But what does this end up give?

Scenarios of use

In fact, the scenarios of the use of tags mass. For example, I apply password storage tags and home automation, someone to automatically unlock the smartphone and automatic launch of the navigator in the car. Tags can be glued to the table, on the laptop, on the key chain, inside the book, on the business card or sew under the clothes. Therefore, the range of their application is huge, and ultimately everything rests on your fantasy.

Home automation

The simplest and obvious way to use tags is just to put them around the house in order to get a kind of automation system. There are many different options here. I will give the most interesting and useful.

Password from home Wi-Fi. Glue the tag on the router and write a password to it using the InstawiFi application. It will be useful not only to those who often receive guests, but also fans of experiments with firmware.
Starting autosynchronization or application for data exchange from PC. The tag can be glued to a laptop or systemist and register the application for data synchronization (AIRDROID, WiFi ADB and others).
Enable access point. Again, glue the tag on the laptop, then set the TRIGGER application. Add a new task, select NFC as a trigger, we skip the choice of restrictions, as actions, choose "Wireless and local networks -\u003e WiFi-zone, "skip the next screen (add a switch) and on the last screen to bring to the NFC tag.
Enable the flight mode for the night. Glue the label somewhere closer to the bed. We launch Trigger, a new task -\u003e trigger: NFC -\u003e Action: "Experimental -\u003e Mode on the plane". Alternatively, instead of turning on the aircraft mode, you can configure disabling data and Wi-Fi, adding the appropriate actions to the task.

Automotive automation

NFC tags will be very useful to those who use the smartphone as a car navigator. It is enough to stick the tag on the smartphone holder and write down the instruction in it for launching the navigator - and voila. Everything became much easier. Nevertheless, I would recommend go a few other way and complicate the setting by adding to it automatic inclusion Bluetooth (for headset), GPS and Wi-Fi shutdown.

To do this, we will need trigger again. Run, add a job, select NFC as a trigger. Add the action "Bluetooth -\u003e Bluetooth ON / OFF -\u003e Enable". Add one more action: "Wireless and Local Networks -\u003e GPS On / Off -\u003e Enable". And one more: "Wireless and Local Networks -\u003e WiFi On / Off -\u003e Turn off." Finally, add an action "Application and Labels -\u003e Open application -\u003e Select the application." We skip the screen of adding the switches, on the next screen, bring the smartphone to the tag.

Now after installing the smartphone to the holder, we will get a fully configured smartphone for use in the car.

Unlock smartphone

Motorola has a pretty interesting accessory for smartphones called Motorola Skip. It is a clips on clothes for quick unlocking smartphone without the need to introduce a PIN code or graphic key. Accessory in some cases is quite useful, but it only works with smartphones of the same company. Fortunately, similar thing can be collected on the knee.

I will not tell how to make the clips itself, - here everyone is free to show his fantasy, the NFC tag can be pasted on the hand - and instead I will tell you how to configure the unlocking smartphone when you touch it. There are several ways, but the easiest and efficient is an XPosed-module NFC LockScreenOff Enabler. The module, like XPosed itself, requires root, but in addition to an effective solution, the task includes superfunction - activation NFC when the screen is turned off.

The fact is that for the security purposes, it prohibits the use of NFC until the screen is unlocked (not just included, namely unlocked), which reduces many effective techniques to use. NFC LockScreenOff Enabler solves this problem.

Business card

NFC tags can be used in combination with business cards. There are several companies in the market that are engaged in their release, but their price tags are such that it is easier to gently stick tags for ordinary business cards, and a lot of money will remain in his pocket. In the tag, you can write any information, including contact details (Tagwriter supports such a format), website address or even geographical coordinates Your office (the smartphone will automatically open cards to display the position). And most importantly, the business card is not at all necessary to give a person, enough for him to scan it.

Enable comp

This is a kind of development of the idea of \u200b\u200btags on the system and laptop. The idea is to create a setting that will enable the computer using the NFC tag without taking into account where the tag itself is located. Its, for example, can be glued into the hallway, so you can turn on the machine even before you rent shoes. The method is based on the WOL function, which allows you to enable the computer by sending packets to the Ethernet port, and the Android application Wol Wake On Lan Wan, which makes it via the Internet.

How to setup? To begin with, open the router control panel and adjust the ports of ports 7 and 9 (WOL ports) to our homework. It is very important to specify the MAC address instead of an IP, since the latter can be given to another device. Next, we go to Noip.com, register and get a free domain that we will use to reach the router from the outside. In the event that you have a static IP, you can skip this step.

Next, we install the WOL Wake ON LAN WAN smartphone, press the Add New button and drive the arbitrary name, the MAC address of the computer and the domain received earlier, press Save. Just in case, check the setting. Next, we set Tasker, go to the Tasks tab (tasks), create a new task, select Plugin -\u003e Wake On Lan WAN and choose the previously created WOL-profile. We save.

Now we need to tie this task to NFC. To do this, run Trigger, add a task, select NFC as a trigger, and as actions - "Planner -\u003e Planner's task" (workers transferred Tasker as a "scheduler"), then select the task created at the previous stage in the Tasker, we skip the creation of switches and At the last stage, the configuration of the smartphone to the NFC tag.

It's all. If everything is configured correctly, when the Android tag is detected, it will return the Trigger control, it will, in turn, will run the Tasker task, which activates the profile you need in the Wol Wake On Lan Wan application, it will send a WOL-package to the router, and he will redirect it to MAC address of the company, lAN card whom ... Well, okay. In general, everything just should work :).

conclusions

NFC technology has a lot of applications, and I am confident that after five years, NFC labels and payment terminals will be everywhere, from advertising posters to supermarkets. And I hope that at least this time Russia will not stretch from around the world by fifty years.

Everything more Users recommend buying one or another smartphone due to the fact that its developer has equipped the model NFC technology. What is this feature? Why is it needed in modern smartphones? We offer to get acquainted with a little more details with the fact that the NFC module is needed, as well as with the list of the most affordable smartphones of the current year, which are equipped with this function.

What is NFC module?

The full name of this technology - Near Field Communication And it is intended to quickly exchange data at minimal distances between the devices. Thanks to this technology, a variety of data is transmitted, committed contactless paymentAlso NFC allows you to control the work of those or other devices.

Most often, NFC is involved in payment made by purchases. The buyer who has a smartphone with NFC technology has the opportunity to digital level Bind your card to the device and with the help of your phone pay for purchases.

It turns out that the smartphone equipped with a NFC module can be a full payment facility. Although the demand and popularity of this technology is constantly growing, it is still difficult to find an inexpensive smartphone with the NFC module. Without problems, you can buy expensive gadgets and appliances from the middle segment, but budget models are rare.

We offer to get acquainted with the list of inexpensive devices that use NFC technology.

List of smartphones with NFC module

Alcatel Pop S7 7045Y - the most cheap smartphone with NFC.
Alcatel U5 HD and A7
Xiaomi Mi6.
Xiaomi Mi5s.
Xiaomi Mi Note 3
Xiaomi Mi Mix 2
Huawei Honor 9
Huawei Honor 6x.
Huawei Honor 5C.
Huawei P10 Lite.
Huawei Nova. 2
iPhone SE
iPhone 8.
iPhone X.
LG G6.
LG V30.
LG Q6 and Q6 +
LG X Venture.
Lenovo P2.
Samsung Galaxy Note. 8
SAMSUNG GALAXY S8.
SAMSUNG GALAXY J5 (2016)
SAMSUNG GALAXY J7 (2017)
SAMSUNG GALAXY A5 2017
Sony Xperia. L1
Sony Xperia E5.
Sony Xperia Xa1.
Nokia 3.
Nokia 5.
Nokia 6.
Nokia 8.
ASUS Zenfone. 4
ASUS ZENFONE 4 PRO.
ASUS ZENFONE 4 AR
BlackView BV6000S.
BlackView BV8000 PRO.
Wileyfox Swift 2X.
HTC Desire 530
HTC U Ultra
HTC U11 and U11 Plus
Google Pixel 2 / 2XL.
OnePlus 5 / 5t.
ZTE Nubia. Z17 and z17 mini
Moto G5S.
AGM X2.
BlackBerry Motion and Keyone

SAMSUNG smartphones

In most cases, cheap smartphones - These are products of branded companies. In particular, Samsung offers consumers the following smartphones:

SAMSUNG GALAXY A3 (2017) - from 13,700 rubles;

These are representatives of Central price category. The cost information was taken by us from the Yandex.Market Internet portal. It is interesting to notice that at this stage of development, Samsung equips all its smartphones in the NFC module. This contributes to effective promotion of its own payment system Samsung Pay..

Nokia smartphones

Many new Nokia smartphones are also equipped with previously presented technology. Here are just some of the available models:

Nokia 3. - Cost in the range of 7,900 rubles. The smartphone is equipped with an IPS display of 5 inches, the resolution of which is 1280x720 px. The device is functioning on the basis of the MEDIATEK MTK 6737 chip with 2 GB of operational and 16 GB of accumulative memory. The shell is a polycarbonate case with an aluminum frame.
Nokia 5. - The cost of Yandex.Market reaches 11,000 rubles. The display of this device is 0.2 inches larger, the body is completely aluminum, and Qualcomm Snapdragon 430 is used as a processor. The operational and accumulative memory indicators are exactly the same, except that the cumulative can be expanded to 128 GB.
Nokia 6. - Price no more than 16,000 rubles. 5.5 inches screen, screen resolution of 1920x1280 points, central chip All the same Qualcomm Snapdragon 430, but RAM is already 3 GB, and the accumulative memory of 32 GB.

Smartphones Sony

Other popular manufacturer The available phones with the NFC module is Sony, which gave us the following smartphones:

Pay attention to the very first model that costs less than 8,000 rubles, but it is already equipped with so important and useful feature. In addition, it is impossible to say that the device is deprived in some other respect. It has everything that can be required to be modern, not the most demanding user.

NFC in the phone What is it? - This is a technology that was used to conduct payments without cards and any contacts with the terminal. Over time, the NFC functionality has increased and can be transmitted a variety of data. To use technology, you will need to have a built-in chip into the device and enter bank data. Actual to use in stores, as an interactive business card or a key-key to access certain elements in systems.

What is NFC in a smartphone?

NFC on the phone: What is it how to use? - These are 2 conjugate questions that are directly related to the name of the technology, which in Russian is decrypted "Communication of the field nearby". The technology is a wireless connection method on a short distance. 2 devices in which this chip is embedded can exchange information among themselves. The transmission distance is the total centimeters. The principle of action resembles an IR port in old models of devices.

Today NFC is mounted in almost all mobile devicesproduced by market leaders. Initially, the concept of technology meant its use as a virtual form of debit cards. Among the auxiliary useful areas of use that appeared over time - a pass to various institutions and identification of the personality. Auxiliary use of technology provides the possibility of exchanging various files, references and other content. Through programs, it is possible to record information and lay it in special cards.

Technology support began with Android 4.0, in mobile platforms the function is the Beam for sharing files between smartphones.

We remember that there is a Bluetooth service, why additional feature With a smaller coating radius? Bluetooth personal data transmission with a high degree of safety is not suitable, since the signal propagates far and can be captured, respectively, the risk of data abduction increases. In addition to the safety of NFC, it is worth noting the instant connection, comparing with Bluetooth to for a long time Connect.

How to find out if NFC?

To learn NFC in which phones there is a paramount task to start using technology. Not all devices contain this chip, although in modern smartphones they are set increasingly.

For a number of manufacturers, including Samsung, it is possible to determine the presence of a function by considering the sticker placed on the battery. In the case of the presence of a function, an appropriate inscription will be present with the full name. Other manufacturers glue the corresponding emblem, which reports the presence of NFC.

In the smartphone itself, you can see if the module is set using the settings:

You need to go to the "Settings" item;
Next, you should find the Count "Wireless Networks" and tap the "More ..." key to obtain additional parameters;

A special item must be present to configure NFC.

When it was already possible to find out if there is phone NFC. You can go to the further step - initializing the function startup. So set permission to use data exchange technology.

Activation NFC:

You should click on the "Settings";
Then go to the category "Wireless Networks" and choose "more ...";
You need to set the mark near the "Allow Data Exchange ..." option, the function will be available if the tablets or smartphones will be compatible with each other;
Automatic occurs activation Android Beam;

If the Turning on the Beam function has not happened independently, you should click on it and manually enable.

When the Android Beam is disabled, a number of restrictions on working through NFC between devices are superimposed.

How to use NFC?

When the mode is activated, you must proceed to the next step - the use of technology for the necessary goal (data or payment).

If it is planned to transmit data, you need to pay attention to:

necessarily the presence of NFC mode on smartphones or tablets in activated state and auxiliary android functions Beam;
when blocking or sleep mode, data transmission is interrupted;
when combining devices at an optimal distance, a special beep will be transmitted, which indicates the entry of the device in the NFC action field;
you can not separate the devices until the final data transfer, which will be reported by means of a special beep.

The transfer process itself is simple and it is very similar to standard feature Bluetooth. Between any devices it is possible to transfer the data:

You need to go to the folder with the appropriate content.
Connect the devices with the withdrawal sides, placing backwards with each other.
You should expect a sound message about finding each other with smartphones. On the smartphone screen, there will be a message to be pressed to start.