In 2021, what will mobile phones do?

In our daily use of mobile phones, the most intuitive experience is the screen, shooting, system and battery life. In fact, the precision of mobile phone manufacturers is basically in these aspects. The data shows that the replacement cycle of consumers is extending, with an average replacement cycle of more than 33 months. < / P > < p > “in order to let consumers pay for mobile phones, manufacturers will always improve some selling points, even if some functions are not in strong demand.” Some people in the industry told shenran. < / P > < p > after such an extraordinary mobile phone market in 2020, the trend of growth and decline is reflected incisively and vividly in one year. Now we are going to usher in the year 2021, which is difficult to predict. With the development of the arms race among mobile phone manufacturers, the difference in hardware has been very small, especially for flagship products, which can be said to be the best technology for energy production in the supply chain. In terms of software, the four domestic mobile phone manufacturers have made up for it, and it is difficult to widen the gap. < / P > < p > will a hundred flowers bloom on the screen of mobile phones? According to a recent survey conducted by gsmarena, a foreign media, “the most anticipated smartphone features in 2021”, the technology of off screen camera ranks first. Some people in the industry believe that the off screen camera is a technology that every mobile phone manufacturer has the power to conquer. However, it’s not good to make a final decision whether the technology will be mature in 2021. Be pessimistic. Even if the first generation products come out, there will be sacrifices in the experience. < / P > < p > what is the most anticipated mobile phone? Will you change in 2021? This paper will analyze the four core points of the current flagship mobile phone competition, screen effect, image system, chip performance and charging efficiency. < / P > < p > according to the data of iResearch’s usertracker platform, in the first half of 2020, short video applications accounted for nearly 32% of the single day effective duration of consumer commonly used apps, which has become one of the most commonly used mobile apps. Before the release of each mobile phone, what screen manufacturers will use is one of the focuses of consumers. < / P > < p > the screen is embedded in the middle of the mobile phone, with more or less “forehead” and “Chin” at both ends. At that time, full screen was far away from us, but with the progress of science and technology and the efforts of mobile phone manufacturers, the screen gradually tended to full screen, at this time, the front camera became abrupt. < / P > < p > this year, the mainstream solutions in the market are still Liu Haiping and digging screen, which can be said to be the optimal solution in the middle state. And manufacturers all know that the full screen mobile phone with camera under screen is the biggest hot spot at present. Why not release mass production machine? Will this technology have a new story next year? < / P > < p > previously, mobile phone manufacturers such as Xiaomi, oppo and vivo all released the concept models of mobile phones with camera technology under the screen, but none of them had mass production. Xu Yan, evaluation manager of a mobile phone manufacturer, told shenran that how to make light pass through the screen to reach the camera is the core of the camera technology under the screen. Now there are two solutions in parallel in the industry, but from the current evolution, there are still technical problems that have not been solved, and they may not be solved in 2021. In short, it is still difficult to popularize the camera under the screen. < / P > < p > one solution is to reduce the pixel density of the area under the screen, so that more areas can transmit light, but the disadvantage is that because the resolution of the area under the screen is low, there will be obvious screen effect. Another solution is to keep the pixel density unchanged, but reduce the area of each pixel, which can also make more areas transparent. But the problem is that because it reduces the area of a single pixel, in order to ensure that the brightness of the screen is consistent, the area under the screen needs more current to compensate for the problem of dark area caused by smaller pixels, so the aging of pixels will be non-existent It is often serious. The life of the area under the screen is different from that of other areas. The longer it takes, you will find that the area under the screen will change color and may turn yellow, black and gray. < / P > < p > of course, this does not completely hinder the pace of commercial manufacturers. Not long ago, ZTE released the first top version of its mobile phone, axon 20, which is equipped with a camera under the screen. < p > < p > Xu Yan said that this is an experimental product of ZTE to see the market acceptance, and the scheme itself is not very mature. In the view of Lin Zhi, chief analyst of wit display, the yield of this technology is unstable, and the production capacity is not guaranteed. Except for small factories like ZTE, no large factory has launched off screen mass production machines, which is enough to show that the maturity of the technology is not high. < / P > < p > on the one hand, we should continue to conquer hard screens, redouble our efforts on waterfall screens, surround screens and folding screens, and even continue to extend curved screens, such as four curved surfaces, which are also curved surfaces. < / P > < p > the folding screen is a relatively mature solution. Driven by Samsung, domestic manufacturers have achieved stable commercial status through radical technology development and promotion in the past two years. Xu Yan observed from the current situation of the supply chain that at the end of next year, the head manufacturers will launch folding screen products. < / P > < p > in this respect, Huawei is more aggressive among domestic manufacturers. The folding screen has been produced in small quantities, and the waterfall screen has gone on sale. By the second generation, the four curved screen has also been used in the flagship aircraft. < / P > < p > but on the other hand, manufacturers also find that consumers’ feedback on curved screens is not as positive as expected, and the cost is too high, which is detrimental to the performance of the whole machine. Next year, folding screens are unlikely to be mass-produced, or even will not become the mainstream in a few years. Manufacturers will return to the design of face-to-face screens at the same time. < / P > < p > “manufacturers will keep curved screens in some product lines, because they look tall, especially can attract offline users to buy.” Xu Yan said. < / P > < p > in terms of display effect, oppo is likely to be the most radical. It is willing to pay for the latest screen display technology, and Samsung’s top screen will be introduced next year. BOE’s OLED screen supply chain entered the whole iPhone industry on the 12th. However, Apple’s OLED screen supply chain began to change. “BOE’s production capacity can not be underestimated. If BOE can reduce the price of OLED screen to a relatively low level, we can expect 1000 yuan machine to use OLED screen.” Wang Chao, founder of Wenyuan think tank, told shenran. < / P > < p > in addition to the continuous evolution of basic parameters such as color level, saturation and brightness, the high refresh rate of the screen has also become the focus of the game of every mobile phone manufacturer in the past two years. Now the refresh rate of 90hz is normal. Some manufacturers have already set a refresh rate of 144hz. Will the refresh rate of mobile phones go higher next year? Although the high brush of flagship mobile phone is standard, Xu Yan thinks that the refresh rate is high to a certain extent, the user’s perception in this aspect is limited, and the cost performance of manufacturers’ continuous investment is not high. < / P > < p > whether the mobile screen is larger, higher brush or higher brightness, it consumes more and more power in the evolution. From the technical planning route of Samsung, the screen leader, to maintain the existing display effect and parameter experience and reduce the power consumption is a major direction of mobile screen. There are two factors that determine the power consumption. One is to optimize the light-emitting materials of the screen in terms of hardware. The other is to reduce the power consumption of the screen with the support of multi gear refresh rate, extremely low gear refresh rate and dynamic refresh rate. < / P > < p > in addition to “where to put the front end”, the competition among manufacturers in terms of cameras is also “rear end pinduoduo”. Led by Huawei, mobile phone manufacturers have joined the arms race of imaging system, competing for quantity and parameters. < / P > < p > after Xiaomi and Samsung’s flagship mobile phones use 100 megapixel cameras, the fight for mobile phone pixels has reached the limit. Xu Yan said that although the parameters have not stopped, it has come to an end, because by 2021, 48 million pixels will be the standard configuration of Android flagship. < / P > < p > the space of mobile phone is limited, the number of cameras that can be plugged is limited, and the camera parameters are also limited. When the parameters are standard, what can manufacturers do? < / P > < p > it is impossible for mobile phones to go to the road of professional cameras. Professional cameras are designed around the imaging system, while mobile phones need to make a good balance to improve the performance of the imaging system as much as possible under the limitations of volume, performance, power consumption and so on. < / P > < p > shows that the value of light sensing system in the key components of smart phones accounts for nearly 50%, which is an incremental factor to break through the bottleneck of mobile phone market. The light sensing system includes lens, module, sensor, voice coil motor and other camera components, as well as chip, ISP, screen and other parts for calculation and display. < / P > < p > another important point is that manufacturers will fight for off screen cameras next year. In addition to working hard on the screen side, it is a more essential challenge to take photos and videos with high quality across one layer of screen. The difficulty of shooting under the screen is that the screen is not only used for display, but also for imaging. In the traditional post front shooting, there is no obstacle for the light to enter the lens, but when shooting under the screen, the light has to pass through the screen first. This process not only reduces the luminous flux and lacks image information, but also brings problems such as atomization and spot. < p > < p > Kuangshi technology, an artificial intelligence company, has also thought about this problem and proposed the solution of “redefining light sensing system with AI”. Its core is to upgrade the three systems from the original parameter level interaction to a fully connected structure similar to neural network, so as to realize the overall optimization and mutual complement. < / P > < p > taking shooting under the screen as an example, in the screen design, diffractive optics and pixel arrangement are considered to improve the transmittance and optimize the spot diffusion. In the process of sensor imaging, AI algorithms such as computational photography are introduced to compensate the multiple exposure design and enhance the basic image quality. With the global optimization method of light sensing system, the negative influence of light can be eliminated or even enhanced positively by cooperating with the screen. This may be the direction of mobile phone under screen imaging system in the future. < / P > < p > back to the current mobile imaging system, AI algorithm has played an important role. According to the white paper, the coverage rate of AI shooting algorithm will reach 91.6% in domestic Android phones of different prices in 2019. Among them, the value of AI basic image quality algorithm accounts for the highest, more than 50%. Mobile phone manufacturers either develop their own algorithms or cooperate with AI companies. < / P > < p > according to Xu Yan, manufacturers will make different strategies according to the products of different prices. For example, the imaging capability of the flagship machine needs to be strong enough and controllable enough, so the proportion of self research will be high, but they will also purchase algorithms from a third party. Because the third-party algorithm is very rich, there is no conflict between the algorithms, and can be superimposed. < / P > < p > take Kuangshi’s super image quality technology as an example. At present, it has iterated to version 3.0, providing more than 100 functions, such as image quality enhancement, AI noise reduction, high dynamic range HDR, ghost optimization, etc. According to the white paper, among the top 15 mobile phones in DxO mobile phone shooting evaluation, 10 are domestic mobile phones, and more than 70% of them have developed basic image quality algorithms by applying or cooperating with Kuangshi. < / P > < p > this year is a year of comprehensive popularization of computational photography. Next year, mobile phone manufacturers will continue to strengthen and add more new patterns. With the more algorithms of computational photography and the more superposition, the more computation is needed, and there is no need to worry about these algorithms running on the mobile phone. On the one hand, in the process of research and development, the algorithm will be designed with the chip to optimize the power consumption. On the other hand, Xu Yan said that now there are 5g blessings, which can put the calculation of the algorithm on the cloud, in the cloud