What is LTE (4G) in a smartphone. Application of LTE technology in smartphones
LTE technology - what is it? IN modern world innovative technologies wireless communication is experiencing rapid development. Many have probably already heard about LTE technology, but not everyone understands what it is and why it is needed at all.
Thanks to a huge number of all kinds of tablet PCs, smartphones and laptops that are available on the domestic market, users are increasingly in need of a high-speed wireless Internet connection. And, as you know, demand creates supply. Here, too, mobile operators, given the huge demand, are simply forced to provide their subscribers with a better and faster connection.
It is for this reason that modern networks mobile communications New technologies are being actively introduced, the most promising of which is the LTE technology. Today we are witnessing a gradual transition from 3G to the fourth generation of communication, and it is LTE technology that allows us to do this smoothly and imperceptibly for users. This is because the implementation of LTE is possible in different frequency bands.
1. What does LTE mean?
The answer to the question of what LTE means is Long Term Evolution, which in translation into Russian means long-term evolution. Initially, it was planned to use WiMAX technology as the fourth generation of mobile communication, but due to many factors that testify in favor of LTE, WiMAX was still relegated to the background.
LTE is a unique technology for building a mobile communication network, which belongs to the fourth generation of communication. This technology was built on the basis of IP technologies, which means that the technology has an increased speed of information transfer. The LTE standard was developed and approved by the international partnership 3GPP.
Some people think that LTE technology is a simple improvement of the third generation of communication, but this opinion is erroneous. In fact, LTE is a deeper and more significant change. This is a transition from CDMA (WCDMA) systems to OFDMA systems. In addition, LTE marks the transition from a circuit-switched system to a packet-switched system (e2e IP).
What is the LTE standard? This is a new communication system that is being introduced into existing networks and providing higher speed Internet connections.
2. The goals of the development of the LTE standard
First of all, the LTE communication standard was developed to achieve the following goals:
- Reducing the cost of information transmission over a wireless network;
- Significant increase in data transfer rate;
- Expanding the range of services provided and reducing their cost;
- Increasing the flexibility of using existing mobile communication systems.
The main goal of the development of the LTE standard is to increase the speed of data transmission over wireless networks. All other goals will be automatically achieved when the first one is reached. The integration of LTE technology makes it possible to create high-speed mobile communication systems that will be optimized specifically for packet data transmission. At the same time, the speed in the receive channel (download), theoretically, is 326 Mbps, and in the upload channel - 75 Mbps.
However, given the fact that the technology is still under development and has just begun to be introduced into existing networks, the actual data transfer rate differs slightly from the theoretical one and, under ideal conditions, is 100 Mbps when receiving a signal and 50 Mbps when uploading. It should be noted that today even such indicators are not achieved everywhere. Although in any case the data transfer rate in LTE networks much higher than in 3G.
3. Support for voice communication in the LTE network
As mentioned above, LTE technology is under development and is only being introduced into existing networks, but many people ask the question - what is LTE mode? Is voice communication possible on this network?
Initially, LTE technology was developed entirely on the basis of IP protocols. Because of this, this technology, in its most basic form, is only capable of supporting data transmission. However, in currently active developments are underway that will allow operators to offer their subscribers some solutions that allow using voice communication in the LTE network.
Already today, IP solutions are being developed that will provide the same interoperability as smooth operation, as well as the flexibility that current second and third generation mobile technologies can offer.
4. LTE on iPhone 5s and what is LTE: Video
IMS has such capabilities. These are the multimedia subsystems that use the IP protocols. It is IMS that provides mobile operators with the opportunity to provide high-quality services voice communication LTE. At the same time, the LTE network is built in such a way that if the subscriber leaves the LTE coverage area, he automatically switches to 3G without losing connection.
The plans of mobile operators include the following development scenario. To begin with, an LTE network will be built only for data transmission. The existing 3G and 2G networks will be used for voice communications. However, over time, it is planned to completely switch to LTE, both for data transmission and for voice communications (VoLTE - Voice-over-LTE) based on IMS.
VOLTE technology is a specification for the voice transmission of traffic from circuit-switched and SMS systems to packet-switched systems. In other words, thanks to VоLTE, voice traffic will be transmitted directly through the LTE connection using IMS.
5. Advantages of LTE technology
First of all, it should be understood that LTE is not a revolutionary, but an evolutionary path in the development of mobile communications. After all, the existing infrastructure is used for the implementation of this technology. Even though third generation networks will be used in all countries of the world for a long time, LTE technology and the fourth generation of communication are the future of mobile networks. This is due to a number of undeniable and obvious advantages:
- Significantly higher bandwidth and, accordingly, higher Internet speed;
- Simplicity. LTE technology supports flexible bandwidth options with a carrier frequency of 1.4-20 MHz. In addition, this technology supports duplex data transmission with the possibility of signal division by frequency (FDD), as well as by time division (TDD);
- Low latency. LTE technology has significantly lower data transfer latency for user plane protocols. This opens up a lot of opportunities, for example, subscribers have the opportunity to play multiplayer online games;
- More wide range subscription mobile devices. It is planned to equip with LTE modules not only mobile phones(smartphones) and tablet PCs, but also laptops, camcorders, game consoles, and other household and portable devices.
It is actively developing, every day more and more services and applications are offered to users, designed to make the life of a subscriber of cellular networks as easy as possible. It's no secret that many wireless consumers regularly use resources on their gadgets. Almost every smartphone now produced is with LTE support, this mandatory requirement modern information age.
A Brief History of the Mobile Internet
So, the Internet has become an integral part of any modern smartphone. It helps to check mail, chat in in social networks, and just get the necessary information in a short time. Previously, the phone was rarely used as a network access point. This was due to many reasons: the quality of the connection left much to be desired, the speed of the Internet made me pretty nervous, in addition, the price played an important role. Traffic on mobile devices was initially quite expensive for the average user of this type of communication. However, nothing stands still. The largest operators of cellular networks and manufacturers of gadgets quickly realized all the benefits of introducing and reducing the cost of technologically advanced methods of Internet connection for users of mobile devices.
4th generation networks
What is LTE in a smartphone? Let's take a brief excursion into the history of development So, everyone remembers GPRS quite well. This technology for connecting to the World Wide Web required remarkable endurance and was fabulously expensive, so it was not popular. She is being replaced new technology, dubbed "third generation mobile services", or 3G. This technical achievement began to be introduced in the 2000s. His distinctive feature is a two-to-one connection that allows you to boost up to 3.5 Mbps. This means the ability to watch movies, videos and other traffic-heavy files on your smartphone. In addition, the quality of communication has improved, and in networks of this generation, a rapid transition from a voice call to the continued use of Internet surfing is possible. But they were replaced by more developed networks - the fourth generation, or 4G. This latest technology allows you to access the World Wide Web at speeds up to 100 Mbps - that's what LTE is in a smartphone.
How LTE works
And now let's try to deal with the latest generation networks, their support and the possibility of using them in various situations. Each generation of communication changes over the course of ten years, and new, increased requirements are imposed on them. What is LTE in a new generation smartphone? This is an opportunity for comfortable use of voice and video communications and, importantly, high-speed Internet access. Ceteris paribus, the clear advantages are indisputable: fast downloading of information, large file sharing, a clear picture when viewing online. All this is provided by multi-rank connection and packet data transfer. However, new generation networks have a limited coverage area. At the moment, these are megacities, big cities and some capitals of the regions of the Russian Federation. All new generation gadgets support LTE, but their price is quite high. Chinese smartphones with LTE are in constant demand - as cheaper ones, but with similar specifications. Now you can imagine what LTE is in a smartphone, and what this generation of communications is for.
Due to the fact that more and more smartphones with a built-in LTE module appear on the Russian market, many are wondering - what is LTE in a smartphone? In order to most clearly answer this question, you need to understand what LTE is and what advantages this technology has. After all, knowing the answer to these questions, even the most remote mobile user will be able to understand what advantages an LTE smartphone has.
1. LTE technology and its features
Modern technologies do not stand still. This is especially true for mobile communication technologies. If we recall all the mobile communication technologies available to ordinary subscribers, we can identify a certain pattern. Each generation of communication, starting with 2G, has a certain time interval. That is, 2G technology was developed in 1990, and it was integrated only in 2000. In the same way, 3G was developed in 2000, and began to work fully only in 2010. Now the turn of the fourth generation of communication has come. Already today we can observe a gradual transition from 3G to 4G. And it is LTE that is the very technology that allows you to make this transition smoothly and imperceptibly for subscribers.
LTE is the technology of the fourth generation of communication. The 4G standard includes such mobile communication technologies that can provide subscribers with an Internet connection speed of at least 100 Mbps. The main difference of this technology lies in the high data transfer rate, which in theory is 300 Mbps when receiving information (download) and 170 Mbps when uploading (upload). However, given the novelty of the technology and the fact that it is just being introduced, the actual data transfer rate differs from the theoretical one and is about 100 Mbps when receiving a signal and 50 Mbps when uploading.
Thus, it becomes clear that LTE smartphones allow the user to have access to high-speed Internet. Thanks to this, subscribers receive a lot of new, absolutely unlimited opportunities. For example, high-quality two-way video communication, watching movies online in FullHD format, and so on.
In addition, LTE technology is being implemented in 3G networks and makes it possible to use the existing infrastructure. This makes the transition from 3G to the fourth generation of communication smoother and invisible to subscribers. In addition, in the vast majority of cases, smartphones with LTE are able to work in third-generation networks, and even 2G. In other words, even if the subscriber leaves the LTE coverage area, the device automatically switches to 3G mode without losing connection.
1.1. LTE communication modes
In addition, a feature of LTE technology is that it is able to work in two communication modes at once:
- FDD is a two-way frequency division communication mode. That is, the downstream and upstream information flows have different frequencies. Due to this, higher stability of the established connection and high connection speed are achieved. The number of channels in both directions is equal.
- TDD is two-way time division communication. That is, communication is implemented by time multiplexing of the downlink and uplink data transmission channels on the same carrier frequency. The advantage of this communication mode is that it allows more optimal use of radio link resources. At the same time, the number of time intervals in the downlink and uplink communication channels is different.
Already today, realizing the need to combine these modes, mobile device manufacturers produce terminals that support both modes. Moreover, in terms of complexity, a device with a combined terminal does not differ significantly from simple device FDD.
2. Smartphones with LTE for Russia
Considering all the advantages of LTE technology, it becomes clear that a smartphone with LTE is able to provide the user with a lot of additional features and higher quality of communication, as well as the speed of the Internet connection.
In addition, mobile operators providing LTE services clearly understand that the availability of mobile subscriber devices, in particular LTE smartphones, directly affects the demand for such services. This is explained simple rule- Demand creates supply. After all, what more people will be able to afford to purchase a mobile device with LTE, the higher the demand for this technology will be, the faster the technology will be developed and implemented.
Understanding this relationship, the largest mobile operators have created a strategic partnership and filed a request to reduce the customs duty on the import of mobile devices, in particular smartphones. This will reduce their cost and make them more accessible to Russians.
However, there is one caveat. Not every smartphone with LTE support will be able to work in Russian networks. This is explained by the fact that devices with LTE modules tuned to a certain frequency are currently being produced. For example, if a smartphone is tuned to a frequency of 2100 MHz, then it will not work in Russia, since LTE networks are built in the frequency bands 791-862 MHz and 2500-2700 MHz. The supported frequency must be indicated in the technical characteristics of the device.
Today, units of smartphone models can work in Russia, including:
- Nokia Lumia 920;
- LG Optimus G;
- LG Optimus F5;
- Sony Xperia V;
- Sony Xperia SP;
- Samsung Galaxy Express;
- Alcatel IDOL S;
- HTC One SV;
- BlackBerry Z10.
However, even these models do not support all frequencies. In most cases, they can only work in low range conditions. In order to know exactly what frequencies a smartphone supports, see specifications. In addition to these devices, Russian market there are other smartphones. With the development of technology, more and more new models are appearing that can work in Russian LTE networks.
3. Benefits of LTE smartphones
Considering all the advantages and features of LTE technology, all the advantages of LTE smartphones become obvious. Smartphones with LTE support are not just handy tool to surf the Internet. First of all, these are multifunctional devices that allow you to solve a wide variety of tasks that can be related to both multimedia (watching movies in FullHD format, listening to music, image processing, and so on) and the Internet (video conferencing, online presentations, high-quality communication and high internet speed). All this becomes available to every owner of an LTE smartphone.
In addition to the usual models on the Russian market, you can find dual-sim smartphones with LTE. They allow the use of fourth-generation communications from different operators. At the moment, this is a huge advantage, since LTE networks do not yet cover the entire territory of the country. Different operators cover different cities. So in those cities in which there is no LTE coverage from MTS, Beeline or Megafon networks operate. Here in these cases, smartphones with two SIM cards are an excellent solution.
Another very important advantage is that LTE smartphones for Russia are able to work not only in fourth generation networks. They support third and even second generation communications. Thus, the subscriber always remains in touch. At the moment, there is a technology for automatic transition between networks. In other words, when leaving the LTE coverage area, the smartphone automatically switches to 3G mode without losing connection and without being noticed by the user.
4. Affordable LTE smartphone from Samsung: Video
LTE for modern smartphones is a significant expansion of opportunities. It's a lot of fun entertainment. For example, multiplayer Online Games, which were previously available only with a Wi-Fi connection, are now available to every LTE subscriber. In addition, the smartphone itself can be used as a Wi-Fi router, distributing the Internet to everyone around. That is, if the laptop does not have an LTE module, you need to connect your smartphone to the Internet via a 4G network and turn on the Wi-Fi access point in the settings. At the same time, high-speed Internet will be distributed to your laptop, as well as to other subscriber devices equipped with a Wi-Fi module.
In the modern world high technology always staying in touch is not a luxury, but a necessity, therefore, for business people, smartphones with LTE are a real salvation, as they can create a video conference or solve any other tasks related to accessing the Internet at any time and anywhere and sending files. And given the compact size of such devices, you can always and everywhere take them with you.
Previously, there were a lot of questions about LTE. Today is the most important one: when? When will this happiness come to us, to Russia? A month ago, I did not know what to answer people. Strongly complexed about this, because it is so close to the topic. I doubted whether it was the end of 2012 or the beginning of 2013. No certainty! But now, after the historic decision of the SCRF on September 8, everything finally became clear.
I'm slowpoke, what is LTE?
LTE - Long Term Evolution (English, long-term evolution). When scientists brought to mind 3G (aka UMTS, aka WCDMA) within the framework of the 3GPP project, they “paid for the first or second”. Half began to “twist” 3G to HSPA: these were minor improvements to the radio interface while maintaining the foundation - the principle of code division of channels (CDMA). They planned to finish quickly, so they called among themselves a short-term evolution. The other half was concerned with the question: what if subscribers want mobile Internet at speeds an order of magnitude higher than in 3G? Such issues are not quickly resolved. Here you need to think hard and long. Hence the long-term evolution - LTE. Marketers, by the way, often call LTE 4G.About iron
LTE base stations do not contain anything supernatural. There are radio modules (they are also transceivers, TRXs), a digital signal processing unit (BBU), interface boards (FE / GE ports, electrical, optical). Radio modules are remote - RRU. They are mounted near the antenna (to reduce losses in the RF feeder), they are connected to the BBU by tapping (CPRI standard). Everything is like in the 3G BS, but they are called beautifully - evolved NodeB (literally - the product of the evolution of the “node B”, i.e. the 3G BS itself).
Base station 
Base station
And since BS different standards more similar than different, the manufacturers quickly guessed to do everything “in one bottle”. The solution is called SingleRAN. One BS for 3 standards: GSM, 3G and LTE. It is very convenient for the operator in terms of saving space and power on site, reducing installation time and so on. We have already begun to purchase and install these on the network. So, as soon as, so immediately ...
LTE does not require any special antennas. Normal panel antennas with cross-polarization are quite suitable. They are, for example, used in GSM networks and in 3G. True, if in GSM and 3G two polarizations are usually used for reception, and only one for transmission (2Rx / 1Tx scheme), then in LTE both polarizations are fully used, both for reception and transmission (2Rx / 2Tx scheme). This is necessary for the implementation of MIMO2x2 technology. At the first stage of LTE implementation, this will be enough. Further, the throughput of the sector can be increased by adding one more cross-field antenna. You get a 4Rx / 4Tx and MIMO4x4 scheme. The main thing is to spread the antennas in space at a sufficient distance (about 10 wavelengths).
What else from "iron"? There is no access network controller (like BSC in GSM, or RNC in 3G), as a separate physical and logical node in the LTE network, BSs are connected directly to Core nodes, and exclusively via IP. Core is used only by batch. It is called EPC (evolved Packet Core). Luckily for us, the relatively new regular Packet Core turns into an EPC through a software upgrade. The MME functionality (mobility management node in LTE) can be rolled onto the SGSN node used for GPRS / 3G, and the GGSN must be able to handle the PGW / SGW functions. I won't say that all SGSN/GGSNs of Beeline are HW-ready for LTE, but we are confidently moving in this direction.
Plus SAE-HSS (subscriber profile storage), which also rises on the existing ngHLR "a HW platform. That, in fact, is the entire LTE network.
LTE architecture
About transport
GE ports on the BS. It's like he used to say Winnie the Pooh, for good reason: you probably understand what a backbone should be like with such a backhaul "e! If any of the respected readers have several free billions of dollars, I can suggest how to spend them profitably ...About frequencies
Unlike other mobile communication standards, LTE is not tied to any specific frequency range. This is his strength. Developers (3GPP) have defined more than 30 bands for which manufacturers can release standard LTE radio equipment. This included both frequencies currently used under other standards (for example, 900, 1800 (GSM), 2100 (UMTS), 2500 (WiMAX), and “new”, for example 700-800 MHz (the so-called “digital dividend”). It is clear that not all of the possible ranges will find wide distribution in the world.Most likely, in the end, no more than 4-5 ranges will “survive”. Large quantity it is very difficult to implement in one subscriber device, and this is already a problem for providing global roaming. If you ask what ranges to bet on, my preferences are as follows:- 800 MHz (3GPP band 20) - allocated or planned for LTE in almost all European countries, including Russia; cost-effective for providing continuous coverage; equipment is produced by all leading manufacturers;
- 2.5 GHz (3GPP band 7) - allocated or planned for LTE in almost all countries of Europe and Asia, including Russia; beneficial in providing capacity in hot spots; equipment is produced by all leading manufacturers.
- 1800 MHz (3GPP band 3) - will be released as the number of GSM-only phones decreases and 3G coverage expands (so that there is where to transfer voice); good in terms of providing a balance between capacity and coverage in the network; GSM operators will be able to save money by reusing the access network infrastructure (transceivers, antennas); equipment is produced by almost all leading manufacturers
About speed
Maximum data transfer rates are a key indicator of the coolness of the standard for end users. And LTE is really cool! One can talk for a long time about the theoretical possibilities of different standards, the prospects for their development, and so on, but the fact that speeds of more than 100 Mbps are available to subscribers in already operating LTE networks is a fact. And this is just the beginning of a bright future: I am sure that reaching speeds up to 1 Gbps in LTE networks is a matter of several years. Let's see further. Most likely, another breakthrough will be needed, both in the theory of radio communication and in the technology of production of the element base.About coverage
The coverage area of one BS in LTE can be completely different. What does it depend on first of all? Right! From the used frequency range. If we compare the extreme options, then the coverage area of one eNodeB operating in the lowest LTE band (700 MHz) turns out, all other things being equal, to be 5-6 times larger than for a base operating at 2.5 GHz. In urban areas, the radius of the cell, therefore, can be from several hundred meters to several kilometers. As for the record for the range of the LTE BS, it was set during the trail of the Greek operator Cosmote on Huawei equipment at the beginning of this year - at a distance of 102 km from the BS, a transmission speed of 135 Mbps was obtained. Of course, it was line of sight and one subscriber in the cell. But from the point of view of the limiting possibilities of the standard, it is quite convincing.About gadgets
LTE-enabled subscriber devices currently available on the market include (by type):
USB modems (in the picture - Huawei E398) 
Smartphones (on the photo - HTC Thunderbolt, OS Android) 
Tablet (pictured - Samsung Galaxy Tab 10.1, OS Android) 
Portable LTE/Wi-Fi Hotspot (Samsung SCH-LC11 pictured) 
Notebook (in the picture HP Pavilion DM1-3010NR)
At the moment, more than 100 subscriber devices with LTE support are already available on the market, and this number is growing every day. The main players in this market are our old friends: Samsung, LG, HTC, ZTE, Huawei.
About experiences
I wanted to see how LTE works live for a very long time. The first time happened at the beginning of last year in Stockholm. Thanks to colleagues from Ericsson, they invited me to take a look at the world's first commercial LTE network - Telia-Sonera. To be honest, I was a little disappointed. The speeds while riding around the city in a minibus ranged from 0 to 8 Mbps. In addition, the connection was constantly torn. Colleagues justified themselves by the fact that the network is not yet optimized, the BS is small, the range is high - 2.5 GHz. Everything, of course, is understandable, but I wanted a miracle.Upon arrival from Sweden, we decided to build a pilot LTE network in one of our countries. The easiest way to agree with the Regulator on the allocation (for the time of the pilot) of frequencies for LTE turned out to be in Kazakhstan. The frequency range was chosen as the lowest available - 700 MHz (more precisely, band 13, exactly the denominations on which the American Verizon network is building). By the end of October 2010, networks were built in cooperation with Alcatel-Lucent in two main cities of Kazakhstan (Astana and Almaty). What happened was shown to officials, journalists, and the most interested of potential clients. You can read more.
About voice
Do you need voice over LTE? On the one hand, it seems indecent for a mobile communication standard, which claims to be global, to remain without a basic communication service. On the other hand, it is difficult to imagine that LTE coverage will appear where there is no GSM or 3G. That is, the subscriber will not be left without a voice.Sooner or later, LTE-Advanced will come, additional frequencies will be required. And where can I get them, if not from GSM and 3G networks? Then LTE will be left alone with the subscriber, who, as before, will need to talk - and, therefore, there will definitely be a voice in LTE, a matter of time. Now in the first commercial networks, the CS Fallback function has been implemented to provide voice calls. Having received a message about an incoming call via a service channel in the LTE network, the subscriber device switches to GSM or 3G mode and informs the network that it is ready to accept the call. After that, the call is connected via GSM/3G CS Core.
CS Fallback in action
In the future, when moving to an all-IP architecture, voice in mobile networks will remain only in the form of VoIP. Then the question of choosing a radio access network through which voice calls will go will be reduced to capacitive characteristics - the greater the bandwidth of the sector, the more simultaneous calls it can serve.
Today wireless Mobile Internet from mobile operators is gaining more and more popularity in big cities. Thanks to him, each user can use the Internet and download information from the network in any part of the coverage area. Wireless Internet is also divided into different types technologies. For example, there is the Internet of the 3G generation and the LTE generation. At the same time, LTE wireless Internet is a completely new technology today and has not yet entered tightly into our lives.
So, not everyone knows what LTE is and how to use it, as well as what significant innovations it has brought. Let's take a closer look at this new technology together.
Development of mobile networks and the emergence of LTE
The first Internet on a mobile phone can be considered GPRS technology, which is also called first generation technology. However, this technology was very low speed and a small coverage area, which significantly hindered its use. Then, in 2003, EDGE technology appeared, which is considered to be the technology of the beginning of the mobile Internet era.
EDGE technology is often referred to as "2G", which translates as "second generation technology". Despite the fact that the speed of such an Internet became much higher than GPRS, it was still low, and many sites had to be loaded for a long time, and one could not dream of such a thing as watching a movie online.
The next stage in the development of data transmission technologies was the emergence of a third-generation wireless network, which is called "3G". Thanks to this new technology, using the Internet has become easy and the connection has become more stable. Now users of this mobile network can download websites quickly and even watch videos online, which was not possible before. This technology is quite common these days. However, it is successfully displaced by the new technology of the fourth generation.
With the development of the Internet and mobile phones, a network was needed that could transfer data over the network even faster and at the same time reduce costs. Then the developers created a fourth-generation network - "4G" or "LTE". The name translates as "long-term evolution", which hints at the long-term use of technology in the near future.
This technology has huge advantages over past generations and is actively entering our daily lives.
Characteristics of LTE technology
4G technology allows you to transfer data over a wireless mobile network at speeds up to 150 Mbps, which is currently the fastest data transfer over a mobile network. With such fast speed any user can open websites instantly and download movies very quickly in best quality. In addition, you can even watch movies in HD quality online without any problems.
The coverage area of 4G is up to 100 kilometers, which is much more than that of 3G. 4G also makes better use of the frequency range, reducing the impact of interference on the wireless network.
LTE technology was created in order to increase the data transfer rate, reduce the cost and reduce the delay in the transmission of data packets. The fourth generation network performs all these points admirably. In addition, 4G reduced the costs of mobile operators by 6 times compared to 3G technology, and, therefore, reduced the cost of using services for the consumer.
How can I connect to the LTE network
Almost all modern mobile phones are equipped with the ability to use the fourth generation wireless network, but older models do not support this technology. Connecting to 4G via mobile is not difficult. It is enough just to activate the desired tariff plan from the mobile operator that provides this service. However, it is important to remember that today 4G network coverage may not be everywhere. The coverage area is mainly central regions megacities. However, this will change in the future.
To connect 4G on your phone and tablet, you will need a special SIM card, which can be bought at the offices of a mobile operator. In addition, a laptop will also need a usb modem or router through which data will be transferred to a laptop or computer. A router or modem is also bought in cellular stores.
After the purchase necessary equipment it remains only to choose the appropriate tariff. All information on tariff plans can always be viewed on the website of the mobile operator or clarified in the communication stores where you purchase a modem or router.
Also you can search useful information in our section.