The evaluation of Note4 in Redmi, the deep-water bomb on the transformation road of Redmi.

IT 168 evaluation in 20 13 years, when Xiaomi released the first red rice mobile phone at an incredible price of 799 yuan at that time, perhaps no one could have imagined that in just three years, Redmi series could bring over 100 million sales, with almost one red rice mobile phone user in every ten people, so Redmi series was proudly called "national mobile phone" by Xiaomi. Since the beginning of this year, Xiaomi has launched four Redmi products, further subdivided the Redmi series, and formed the layout of Redmi, Red Rice Note and Red Rice pro. When faced with more and more product lines of Redmi, Xiaomi combed the Redmi series in time.

Can have a clear understanding of Redmi's brand definition.

According to IDC data, the global smartphone market only increased by 0.5% in the first half of 20 16. In the era of explosive growth of smart devices in the process of 2G to 4G, as the mobile phone market gradually changes from incremental market to stock market, for users, relying solely on "cost performance" can no longer meet their higher demand for smart devices, while for manufacturers, the sales model relying solely on e-commerce channels is also facing increasing pressure. It can be seen that the red rice mobile phone, which was dubbed as "the ultimate cost performance", has obviously embarked on the road of transformation by hiring spokespersons and continuing to cooperate with China Mobile to expand channels. At such a node, Xiaomi and China Mobile launched Redmi Note4, which is self-evident. As a deep charge equipped with Redmi series to open up offline channels, we will continue to look at the performance evaluation of Note4 in Redmi.

"The hardware parameters are clear at a glance.

"Redmi Note4 basic parameters.

Screen characteristics

5.5 inches 1920x 1080 pixels

Fuselage size

151x76x8.35mm.

Fuselage weight

175g

processor

MediaTek Helio X20

Network mode

Dual card dual standby, full netcom 2.0

Body memory

16GB/64GB

Random access memory

2GB/3GB

Camera characteristics

Rear130,000 pixels/front 5 million pixels

Characteristic part

Metal body, fingerprint payment

Battery capacity

4 100mAh high density battery

operating system

MIUI 8

Fuselage color

Gold/gray/silver

retail price

899 yuan, 1 199 yuan "Click to view the purchase.

In terms of hardware, Redmi Note4 adopts MediaTek Helio X20 processor, 3GB+64GB memory, 5 million+13 million pixel camera and 4 100mAh high-density battery. After the upgrade, MIUI 8 supports Alipay fingerprint payment, adopts an integrated all-metal back shell (non-three-stage design) and nano injection antenna, and can support dual card dual standby and full netcom 2.0. Only from the first impression, it is still the familiar Redmi, or the standard thousand yuan high match. And in appearance, Redmi Note4 E4 has made some changes, and the non-three-stage all-metal back shell also left a good impression on the author. It can be seen that compared with Red Rice Note3 (standard version), Redmi Note4 is still a product with a relatively high neutral price of 1,000 yuan machine.

Atlas flagship technology+ten cores 899 yuan Redmi Note4 unpacking.

"Analysis of appearance industrial design

A month ago, Red Rice Pro was released as the flagship model of Redmi series. The integrated metal body is adopted for the first time, and the appearance technology of the red rice mobile phone is upgraded to a higher level with the brushed texture. This time, Redmi Note4 focuses on "National All-metal", which naturally retains the scientific and technological level of Red Rice Pro and has certain bright spots. Let's make an in-depth interpretation.

On the whole, Redmi Note4 E4 adopts the conventional rounded rectangular design style, and the front design of the fuselage is simple without any decorative elements. Equipped with a 5.5-inch full HD screen, covered with a layer of 2.5D curved glass, the black edge control is quite satisfactory, and there is no obvious sense of suddenness on the white model, which is acceptable. At the joint between the screen and the metal body, Redmi Note4 is wrapped with a layer of white polycarbonate buffer material, which fully protects the screen.

Redmi Note4 adopts the same CNC integrated metal body as Red Rice Pro, which is a qualitative leap compared with the stamped metal body of Red Rice Note3. Specifically, the fuselage of Redmi Note4 uses CNC (Numerical Control Machine Tool) to cut, drill and polish a whole piece of metal, and then the antenna signal overflow area is completed by nano-injection molding process, and finally an integrated metal shell is obtained, which is expensive. The body of Red Rice Note3 is a metal plate pressed by a punching machine, and the upper and lower ends are generally spliced with plastic materials to form our common three-stage metal body. Compared with the two, Redmi Note4' s metal fuselage structure is more solid, with a higher degree of integration, which can achieve a very high proportion of metal, directly echoing the theme of "national all-metal".

In addition, in order to retain the metallic texture, Redmi Note4 also adopted the sand blasting technology, using No.205 ceramic sand blasting, which not only retained a certain metallic luster, but also made the frosted touch on the back of the whole machine more delicate, which relieved the discomfort caused by its size of 5.5 inches and the weight of 1.75g to some extent.

Redmi Note4 adopts a popular symmetrical design, with a receiver, a camera and a light distance sensor at the top of the front, and a micro USB interface and a speaker at the bottom. Most of the elements are symmetrical and visually more balanced. The only asymmetry appears on the top of the mobile phone, and the earphone hole, infrared sensor and noise reduction MIC can't really coordinate the symmetrical layout.

Summary: It should be said that the appearance of Redmi Note4 is still bright, and the more advanced metal body technology is selected, which has obviously improved the look and feel, and has obvious advantages in the same price mobile phone. What's more commendable is that the author finally saw Xiaomi's inheritance of design elements in this product, such as the radian design on both sides of the back of the fuselage. Since it appeared on Xiaomi Note, it has appeared on Xiaomi 5, Xiaomi Max, Red Rice Pro and Redmi Note4. Obviously, Xiaomi is not only trying to improve the technology and design of products, but also exploring its own direction, and it has begun to take shape.

"Hardware performance analysis:

Since its birth, Redmi has been positioned as the name of the thousand yuan mobile phone with the highest cost performance. "Price" refers to low price, while "sex" undoubtedly represents performance. Therefore, the hardware performance of each red rice mobile phone has become a part that many manufacturers and users pay more attention to, because it is likely to represent the hardware level of a thousand yuan mobile phone in a period of time. In terms of hardware, Redmi Note4 adopts MediaTek MT6797(Helio X20)SoC. Based on TSMC's 20nm HPM process technology, this chip is integrated with Mali-T880MP4 graphics processor and equipped with a seven-mode full-band network modem, which is positioned as a civilian flagship processor with high cost performance.

As the processor with the largest number of cores at present, X20 introduces the structure of three slave sets and ten cores. Simply put, X20 divides 10 cores into three clusters (2xA72 4xA53 4xA53). The slave frequencies of two A53 architectures are 2.0GHz and 1.4GHz, respectively, and the main frequency of A72 architecture is 2.5GHz. The three clusters are connected by MCSI interconnection bus, and the cores are transferred in real time through the heterogeneous operation of CorePilot3.0. Simply put, different clusters correspond to different working states. When the mobile phone needs to be fully charged, it can be processed with a large core, with a small core for light load and four 2GHz cores for medium load. Each core can also adjust the clock frequency.

In addition, the size of the core can be adjusted at will, and the processor can adapt to the application according to the actual use situation to achieve the most suitable state for the application. In a word, the architecture of three slave computers and ten cores makes the mobile phone smarter in normal use, uses the processor more attentively and improves the power consumption ratio. In the actual running test, X20 single-core performance is 1653, and multi-core performance is 5 126. From the CPU computing performance, the single-core performance is roughly equivalent to that of Xiaolong 652, and with the advantage of quantity, the multi-core running score is even better than Xiaolong 652.

In addition, in terms of graphics processing, Helio X20 adopts Mali-T880, and its architecture, specifications and T760 have hardly changed. It supports at most 16 shader cores, and the maximum size of L2 L2 L2 cache is 2MB. The difference is that T760 is developed for 28nm HPM process, while T880 adopts 16nm FinFET process. In terms of technology, T880 is ahead of T760. Due to the improvement of technology, T880 increases the highest frequency from 650MHz to 850MHz, and the triangle filling rate from 1300Mtri/s to1700mtri/s; The pixel output rate can reach 13.6Gpix/s, which is higher than T760, but the power consumption is reduced by 40% due to the architecture upgrade.

In the GFXbench test, the off-screen performance of 1080P Manhattan is 16Fps, and that of 1080P Tyrannosaurus Rex is 17Fps, which is slightly different from Adreno's GPU, but it has made good progress compared with T760.

Summary: On the whole, compared with the products with the same price at present, Redmi Note4 can still become the flagship product in the thousand yuan machine in terms of performance. From the actual performance, X20, as the flagship product of the current generation of processors in MediaTek, even slightly surpasses Qualcomm Xiaolong 652 in data processing, but it still lags behind Mali and Adreno in graphics. In practical application, X20 may be slightly insufficient in heavy games. X20' s balance between performance and power consumption is more in line with the practical needs of users who buy a thousand yuan machine.

"Interpretation of MIUI 8 system

Since the release of MIUI on 20 10, after iteration, the global activation has exceeded 200 million, which has become the core competitiveness of Xiaomi. Just two days before the release of Note4 in Redmi, MIUI ushered in a leap-forward upgrade, with overall improvement in design, function and performance, and iterated to MIUI 8. And this Redmi Note4 has also become the first mobile phone with MIUI 8 pre-installed. In this part of the article, we will explain some new features of MIUI 8 with the help of Redmi Note4.

Brand-new interface design and beautiful colors.

MIUI 8 has done a lot of redrawing on the interface of the system, and the design inspiration comes from kaleidoscope. On the one hand, it pursues the brightness and vitality of color, on the other hand, it pursues the natural change of color to reflect agility. For example, the notice bar can automatically change color according to the weather, and the software such as calendar, tape recorder and weather can also change color according to the situation.

Perfect function, easier to use

MIUI is famous for its timely and complete function updates. As a leap-forward upgrade, MIUI 8 has brought many fresh and practical functions, covering a variety of usage scenarios in life, mainly focusing on the following functional points.

"1, application, mobile phone in two places at once

MIUI 8' s unique "separation" function is divided into two levels. The first level of separation lies in the dual application, that is, there are two WeChat, two QQ, two Weibo and any software related to account login in the mobile phone at the same time, and the data between the dual applications does not affect each other and can run at the same time. This design solves the embarrassment of multiple accounts of one person, and can better switch identities in work and life scenes. For mobile game lovers, it is also easy to switch sizes.

The secondary avatar of MIUI 8 is the mobile phone avatar, that is, by setting different passwords/fingerprints to log in to different desktops, the data between the avatars are also isolated and encrypted. Today, mobile phones hide a lot of our privacy, and this function will have more significance in some scenarios. For example, someone temporarily borrows a mobile phone, quietly enters a "visitor" account, and hides some relatively private applications, so as to protect privacy.

"2, strong sweep.

The sweeping of MIUI 8 is also a highlight, which is not limited to daily bar codes and QR codes, but also supports sweeping, translating, scanning questions, scanning business cards, scanning documents and so on. According to the author's usage habits, Sweeping Litao has a very powerful function. When you see a favorite item, you can immediately sweep it, and the mobile phone can search out the price of the item in Taobao merchants, helping us make the most suitable consumption choice.

For students and friends, the function of scanning questions may be more practical. When you encounter problems in your homework, you can immediately sweep them. The mobile phone can give detailed problem-solving steps, support the answers of all subjects from Grade One to Grade Three, and generate learning reports after use, which further helps to consolidate knowledge points.

"3. Multifunctional calculator

In MIUI 8, the calculator is upgraded to a full-function calculator, which integrates practical tools such as calculating mortgage, individual tax, provident fund, unit and exchange rate conversion, and is suitable for various calculation scenarios. For example, when we travel abroad, Haitao needs foreign currency exchange rate conversion. The calculator supports multi-currency conversion, and the exchange rate is updated in time, which is intuitive and fast. For the majority of office workers, the calculation of salary tax, bonus and welfare, mortgage payment, etc. It has also become clear and practical.

In addition to powerful functional integration, MIUI 8' s calculator has also greatly improved its experience. Every input number, every operation has clear steps. In order to deal with the input errors of individual numbers and operation symbols, the calculator supports modifying the calculation steps at any time, which makes the calculation process full of security. In addition, the calculator also supports Chinese capitalization conversion of numbers to solve the embarrassment of forgetting words when filling out the reimbursement form.

"4, long screen shots

MIUI 8 adds a long screen capture function, which is not only a regular scrolling screen capture, but also allows users to adjust the speed and position of long screen capture by manual sliding, so as to find the area that needs screen capture and realize accurate screen capture. In addition, MIUI 8 also adds graffiti and mosaic functions, which facilitates the next processing and editing of screenshots.

It should be said that the appearance of long screen capture function has many practical significance. Imagine that without this function, we would intercept the web pages, emails and chat records of social software (WeChat, QQ, etc.). ), and we have to piece it together through a few screenshots, which undoubtedly adds a lot of trouble and the final rendering effect is not ideal. The long screen capture function provided by MIUI 8 solves the above embarrassment well, and it is satisfactory in operation process and presentation effect.

"Advertising improvement, continuous optimization.

MIUI 7' s advertisement was repeatedly vomited. After actual measurement, the advertising problem in MIUI 8 has been improved. Weather, security center, and the push of information flow in the calendar can all be turned off manually, but some "hidden stubborn advertisements" remain, such as the advertisement of album page on the music playing page and the advertisement of lunar calendar page under the calendar, which will not affect the overall use. Hongfeng, head of MIUI, also said that the current advertising is an exploration of business model, and users' complaints about advertising are largely due to the operational problems in the background of MIUI, which will continue to be optimized in the future to better integrate information flow with users' needs.

In addition, MIUI 8 equipped with Note4 in Redmi has made progress in fingerprint payment, and has supported Alipay's fingerprint payment. It is expected that the fingerprint payment of WeChat will be completed in September. MIUI will continue to improve. It is reported that screen recording, screen splitting and other functions are already being done, and the future is worth looking forward to. On the whole, MIUI 8 features many highlights, the advertising problem has improved, and there are still some stubborn advertisements. To put it simply, MIUI 8 is a plus item of Redmi Note4.

"Photo analysis:

For some users who buy thousand yuan mobile phones, there may not be too high performance requirements, but with the popularity of social mobility, no matter what kind of users have certain expectations for taking pictures. Redmi Note4 adopts a13 megapixel camera (Samsung or OV) with an aperture of F2.0 and an equivalent focal length of 3.5mm, which supports the phase focusing function of PDAF. In this part of the article, let's take a look at the photography level of Note4 in Redmi.

▲ Outdoor proofs

In sunny days and outdoor proofs, the imaging quality of Redmi Note4 is acceptable, which inherits the characteristics of Xiaomi's consistent warm and white balance, especially the red color, which makes the photo picture colorful and more vivid. Difficult to grasp the green restoration is also in place, but the whole picture is not transparent enough. This is also the common feature of some thousand yuan machines, and the picture quality is acceptable but not distinctive.

▲ Indoor proofs

For indoor proofs, due to insufficient light, Redmi Note4 raised the ISO to 683, and adopted the shutter speed of 1/30S, which reduced the picture purity and made the whole picture a little white. However, this adjustment ensures the brightness of the photo in low illumination. Generally speaking, in low illumination, the priority of the picture is higher than the picture quality, so it is not difficult to understand that Redmi Note4 adopts this adjustment.

▲ Macro proofs

Macro, Redmi Note4 is quite satisfactory, the whole picture can explain the photographed part clearly, and the blurred background part is natural, but the three-dimensional sense of the picture is slightly lacking.

▲ night view proofs

In terms of night scene, Redmi Note4 is relatively dull. Although the brightness of the picture is not bad, excessive ISO makes the noise in the sky part of the whole picture more obvious, and the dark details can hardly be seen in the tall buildings behind.

▲ Redmi Note4 proofs

▲ Redmi Note4 proofs

▲ Redmi Note4 proofs

▲ Redmi Note4 proofs

▲ Redmi Note4 proofs

▲ Redmi Note4 proofs

Summary: The photography level of Redmi Note4 is acceptable in thousand yuan machine. Under the condition of sufficient illumination, the white balance is more accurate, and the red and green colors that are difficult to express are well restored. The color of the whole picture is warm, which is also the consistent style of Xiaomi photos. In the case of ordinary light, the brightness of the picture is not enough, or some image quality is lost in order to maintain the brightness of the picture. In terms of night scenes, we were somewhat disappointed by the performance of Redmi Note4, and the film production rate was not high enough.

"Assessment summary:

In the stock age, it is difficult to maintain brilliant sales only by cost performance. Even the Redmi series, which has always relied only on products, has begun to hire spokespersons to establish a brand image. On Note4 of Redmi, Xiaomi announced that it would act as a unified agent for the whole network with China Mobile, and make use of more than 3,000 offline online stores owned by China Mobile. This is an important step for Xiaomi to re-precipitate offline when facing the bottleneck period of online channels. Looking back on the development of red rice mobile phones, we can see that the first model released in 13 cooperated with China Mobile, with a total sales volume of 22.07 million units; The first generation of Red Rice Note cooperated with China Mobile, with 27.53 million units. As a popular mobile phone with low price and high allocation, Redmi's attributes are almost perfectly matched with offline channels all over the country.

Back to the product, Redmi Note4, a product, chose a CNC integrated metal body that is rare in the thousand yuan machine, and the body technology has been significantly improved compared with the previous products; Configuration is also a continuation of Xiaomi's strong style. Equipped with MediaTek's flagship Helio X20 processor, 3GB+64G storage combination, 5.5-inch large screen and fingerprint recognition, it has obvious advantages in the same price segment. With the release of MIUI 8, Redmi Note4 has also become the first model with MIUI 8 pre-installed, which is easier to use. Although the performance in the camera imaging part is somewhat unsatisfactory, it is still the most worthwhile product with a price of 1,000 yuan.