3  G 
mobile phone is in the ascendant, 4 G phones and storm. On the  market, nokia (the Po), HTC, samsung (the Po) each big cell phone  manufacturers have launched 4 G products, and in the end not long ago  MWC 2012 mobile world congress, 4 G terminal and application of the  parties is the focus of attention. 
 
However,  4 G phones development condition is still not forming. The American  market research firm NPD recently released report says, although it may  have all kinds of 4 G high speed network was set up to, but in fact most  new mobile phone don't support 4 G network. And the issuance of  licenses for domestic 4 G also there is no explicit date. 4 G network  and technology is not mature, 4 G mobile phone battery life ability for  serious trouble by factors such as 4 G mobile phone in the large scale  development. Despite the huge development prospect, but for the moment, 4  G mobile phone of mass popularity need more time. 
 
4 G smartphone coming to the forefront 
 
The  popularity of the 3 G network bring 3 G smartphones in the rapid  development, with 4 G LTE technology development, the 4 G terminal has  emerged. 
 
Nokia had in the United  States at the consumer electronics show in Las Vegas (CES) released  Windows Phone a new generation of flagship product Lumia 900. This  machine by the United States the largest operators AT&T sold  exclusively, is nokia's first LTE 4 G technology support smart phone.  HTC is also layout and 4 G market actively the facilitator. The world's  first launched 4 G mobile phone network support HTC EVO 4 G after, HTC  recently issued new smart phone-LTE Titan Ⅱ HTC. Following nokia, HTC,  was booming development of cell phone manufacturers samsung recently to 4  G preemption market opportunities, and will also introduce a code for  "Mandel" 4 G LTE Windows smartphone. 
 
It  is not difficult to find that, in 4 G network under the accelerated  development, carrying a 4 G network terminal is seen as a future mobile  phone market's largest cake. Especially in the U.S. market, 4 G  smartphone competition becomes increasingly fierce, samsung, LG,  MOTOROLA (the Po), the brand such as HTC 4 G smartphone rob food in  succession, and the apple iPhone 4 S is one of America's most popular 4 G  phones. According to NPD market survey data, 4 G models (including  support, WiMAX and HSPA + LTE) last year in the fourth quarter, to the  United States accounted for 35% of the smart phone sales, and the  Numbers in the same period last year is only 6%. 
 
4  G phones on the market is very hot, also in the industry, 4 G terminal  is also strong limelight. In the urbane communication mobile phone  industry vane "famous MWC 2012 show, the most eye-catching light is 4 G  LTE technology. The conference is the most popular LTE theme, all of the  terminal, application and technology in all around this aspect to  develop, mobile phone manufacturing enterprise with some also launched 4  G phones, the network, application, terminal fusion up. For example, on  two main of zte 4 G LTE phone-PF200 and N910, in mobile digital life,  mobile payment, hd multimedia and other aspects of performance are  embodied in technological advantages. HTC HTC OneX flagship products  also configuration of the qualcomm chip LTE. 
 
At  present 4 G LTE network has been popular in foreign countries. With the  global operators accelerate 4 G network layout, 4 G smartphone will  also be on the cell phone market is a beautiful beautiful scenery. 
 
4 G phones development still save shackles 
 
Despite  the good development prospect of 4 G industry, but for the moment, 4 G  smartphone concept far outweigh the practical significance, and its  development there exist many constraints. 
 
First  of all, 4 G terminal although grab an eye but stunt the majority. The  American market research firm NPD has issued a report, although may have  all kinds of 4 G high speed network was set up to, but in fact most new  mobile phone don't support 4 G network. The report shows that even  under the most relaxed 4 G network definition, the United States last  year sold on the market of smart phones only 35% is in the 4 G network  running on. Although the percentage was 6% higher than the same period  last year, but still means that nearly two thirds of smartphones in  support 3 G network. In other words, 3 G smartphones is still current  market mainstream. 
 
China has also  is such. On one hand, 3 G 
smartphones occupy the absolute end market  share. 3 G network development and popularization, gave birth to the  fiery 3 G smartphone market. Data shows that in the year 2011, China 3 G  users increased by 80.469 million for a total breakthrough of 128  million. Some experts expect after the end of 2011 after sprint, China 3  G penetration rate can reach about 14%, or 2012 can achieve 20% above,  rapid growth in 3 G. 3 G development swing, and on the other hand, the  issuance of licenses for 4 G currently there is no specific agenda.  Labour minister MiaoWei reported letter, 4 G network especially TD-LTE  network construction and after two to three years, to a series of  large-scale trial and trial commercial, can extend license plates. 
 
In  addition, the cell phone battery life of 4 G ability quite worrying. As  is known to all, the battery endurance are already restrict 3 G  smartphones bottlenecks, and for network speed is faster, more powerful  configuration of 4 G for smart phones, battery test of endurance will be  more serious. 4 G network in the United States more popular, more and  more smart phones 4 G users find high-speed broadband service will  accelerate the loss of power speed, and 4 G service is not stable power  consumption is the culprit, even in the United States in a large city,  cell phone or from time to time to search for the network service, then  depleted battery range. Similarly, the American market research company  J.D. Power once every six months smart phone satisfaction survey of the  latest results show that the battery life time is not satisfied with the  most intelligent mobile phone users. Among them, 4 G mobile phone  battery life ability also less than 3 G phones. The need to search 4 G  signal, make this kind of product power consumption increase. In  addition, 4 G users of mobile phone use higher frequency, leading to  battery more nervous. 
 
4 G hair scale universal time is needed to 
 
4  G network is not stable, 4 G mobile phone a few, terminal battery  endurance couldn't keep up with...... Many constraints restricts the 4 G  smartphone market enlargement. Although the development of 4 G has horn  sounded, but terminal the popularization and the scale development  still need a period of brewing and improvement. 
 
Globally,  4 G development is a trend, but also the future a big blue ocean. Many  business, the terminal equipment manufacturer, the chip manufacturers  have launched their own 4 G products, operators also shows the status of  the deployment of their network. And when 4 G network development  matures, 4 G LTE technology is increasingly perfect under, 4 G phones  have incremental development and is not impossible. But now, 3 G network  construction is still in carrying on like, 3 G smartphones are in  strong popularization stage, the scale of 4 G mobile development still  needs to endure the test of time. 
 
Especially  in domestic market, 4 G smartphone development still need to walk  through multi-channel threshold, perhaps need a longer time. Domestic 4 G  the issuance of licenses for the 4 G is in front of the terminal  development "tiger". Besides, according to the work MiaoWei minister  that letter, China 4 G the issuance of licenses may be two to three  years. While China TD-LTE commercial present two problems need to be  solved: one is the density base station, and the other is terminal not  mature. MiaoWei said: "would rather the slightly slower, ready to more  fully, the user to get some mature product." This shows, the next two to  three years, the domestic will still to 3 G development for the  leading. And, this year is the 3 G scale development, an important year,  and, in the telecommunication actively promote the development process  of 3 G, 3 G smartphones will have outbreaks growth. 4 G 
mobile phone and  at present only in the embryonic stage, realize mass popularity time is  needed to.