After Hongmi Note 2, Xiaomi has made great efforts to create Xiaomi 4c, a mobile phone that calls itself the little prince of Android, and uses Snapdragon 808 SoC, 2/3GB memory, 5-inch 1080P screen, and dual card dual standby all Netcom are also supported, which makes up for the regret that Hongmi Note 2 does not support 4G of telecommunications. Xiaomi 4c also inherits the tradition of price butcher. The low configuration version costs only 1299 yuan, while the high configuration version of 3GB+32GB is only 1499 yuan, and the price is also attractive. We Love to play computer games It was originally thought that Xiaomi 4, which was slightly embarrassed in terms of specifications after the launch of Xiaomi 4c, would be delisted immediately, but Xiaomi did not adopt such a strategy. They still kept the Xiaomi 4 of 1499 yuan. So let's see how Xiaomi 4c performs compared with its predecessor Xiaomi 4.
From the perspective of parameter specifications, Xiaomi 4c has obvious advantages. In terms of SoC, Xiaomi 4 is the Snapdragon 801, while Xiaomi 4c is the higher specification Snapdragon 808. Both have 2G and 3G memory versions, both of which have LPDDR3 memory. In terms of bandwidth data, they are similar. However, in terms of network format and SIM card, Xiaomi 4c supports full network access, dual card, dual standby, Xiaomi 4 not only has dual Netcom, but also cannot have dual cards. Neither of them is equipped with this year's hot fingerprint recognition function.
appearance
Xiaomi 4c uses an orange outer packaging box, and the sticker on the back of the packaging box is marked with the model version and some parameter information. After unpacking, you can see a single Xiaomi 4c, a USB Type-C data cable, a pin and the manual. There is no USB Type-C adapter inside. The official USB Type-C adapter of Xiaomi needs to be purchased separately, 5 pieces for each.
Xiaomi 4c looks like a miniature version of Red Rice Note 2 in appearance. It uses matte plastic to wrap the edges, and the plastic of the rear shell extends to the middle frame. Since the rear shell is not as detachable as Red Rice Note 2, the overall feeling of the machine is more cohesive and stable. After removing the rear shell several times, you will obviously feel the looseness of the rear shell in use, Or there is a sound when pressing.
The key layout of Xiaomi 4c is also similar to that of Hongmi Note 2. The power key and volume key are located on the right side of the body. Since the back cover is not removable, there is a SIM card slot on the right side, which only supports Micro SIM cards.
The bottom of the machine is a USB Type interface, which can be plugged in both front and back. The top of the machine is a 3.5mm headphone interface and an infrared module.
Xiaomi 4c uses a dual color temperature flash lamp. The camera is parallel to the back shell of the machine body, not protruding. The speaker opening is located at the bottom of the back shell of the machine.
The front layout of the machine is also very similar to that of the red rice Note 2. At the bottom are three key system buttons, and at the top are the earphone and a 5 million front camera. The screen of the machine does not use 2.5D curved glass, and there is a layer of plastic around the screen.
Xiaomi 4c supports Qualcomm's QC2.0 fast charging standard, and the specifications of its own power adapter are 5V====2A, 9V===1.2A, 12V===1A. Although it is equipped with USB Type-C data cable, the standard data cable of Xiaomi 4c cannot be plugged in both front and back at the USB port.
Official USB Tpye-C interface
The Xiaomi 4c retail version is not equipped with a USB Tpye-C adapter. This small adapter needs to be purchased additionally. The official price is 5 yuan.
screen
Display brightness of Xiaomi 4c
Screen brightness of Xiaomi 4
In terms of brightness, the screen brightness of Xiaomi 4 is about 40 nits higher than that of Xiaomi 4. The maximum white dot brightness of Xiaomi 4's screen center is 470 nits, while the screen edge brightness is between 460-480 nits. The maximum white dot brightness of Xiaomi 4c's screen center is 430 nits, and the screen edge brightness is between 390-440 nits. The screen brightness of Xiaomi 4 is more uniform and higher than that of Xiaomi 4c.
Left: Xiaomi 4 Right: Xiaomi 4c
Left: Xiaomi 4 Right: Xiaomi 4c
In terms of the visual angle of the screen, the screen brightness of Xiaomi 4 and Xiaomi 4 is manually adjusted to the maximum for comparison. Since the screen brightness of Xiaomi 4 is higher, its brightness attenuation is better than that of Xiaomi 4c. However, the angles of both are good, and there is no serious pornographic bias. However, Xiaomi 4 in the first group of comparison pictures, under the condition of diagonal lines, The color of Xiaomi 4 screen has obvious color difference for the front view of the original image, while Xiaomi 4c is much more normal.
Color temperature adjustment in setting
Right: Xiaomi 4 color gamut Left: Xiaomi 4c color gamut
In terms of color gamut, Xiaomi 4 covers 97% sRGB, 77% Adobe RGB, and Xiaomi 4c covers 100% sRGB, 87% Adobe RGG, In this case, no one will say that the screen color temperature is too warm anymore
In terms of screen contrast, the static contrast under the highest brightness of Xiaomi 4c is much higher than that of Xiaomi 4. With more than 40 groups of color tests, the color deviation of Xiaomi 4 is 0.77, and that of Xiaomi 4c is 1.55. The color restoration of Xiaomi 4 is much better.
In general, the screens of Xiaomi 4 and Xiaomi 4c have their own advantages, but the overall performance of Xiaomi 4 is better.
system
On the system side, Xiaomi 4c comes with MIUI 7 (Android 5.1.1). The 3G memory version of Xiaomi 4c can use 1.8G when it is turned on. In the dual card option, you can switch between the 4G network of Telecom and the 4G network of another operator, without using the 4G card of Telecom. The other card can only use the 2G network. As for the edge touch function of Xiaomi 4c, I think this function is relatively common in use. The insensitivity of using the edge touch when taking pictures will make you feel a bit troublesome. Using the edge touch when holding the picture with one hand may cause the palm to tilt (big action and shaking) due to pressing the edge, and eventually cause the picture to be pasted, The global return function is also not easy to control, and occasionally it is not sensitive. One situation occurs that the lower edge system can respond only after 2 to 3 consecutive points. At this time, the system may return several times in succession, which is not easy to control. The small editor is still used to turning off this function in the system settings.
performance
In terms of performance, Xiaomi 4c, which uses the Snapdragon 808 SoC, naturally leads Xiaomi 4, which uses the Snapdragon 801, in terms of CPU and GPU performance. Compared with LG G4, which also uses the Snapdragon 808, Xiaomi 4c's performance is very similar to that of LG G4. This result also meets our psychological expectations. As a well-known price butcher in the industry, Xiaomi has always paid great attention to performance, In daily use, small editors seldom feel stuck and unsmooth. However, in terms of touch control, Xiaomi 4c can only be compared with Hongmi Note 2. Although Xiaomi 4's performance is not as good as Xiaomi 4c's, Xiaomi 4 obviously follows much more than Xiaomi 4c in touch control. With regard to the problem of screen following, as far as the current SoC performance is concerned, It is no longer the bottleneck that affects the touch experience, which has a great relationship with the touch hardware of the mobile phone screen. It seems that Xiaomi 4, as the flagship of last year, still maintains its dignity. Although it has lagged behind the younger generation's Xiaomi 4c in performance, Xiaomi 4 may not be the leader in user experience.
In addition, when running a large stand-alone game, if the temperature of Xiaomi 4c is too high, the dragon 808 on Xiaomi 4c will forcibly shut down the two A57 cores, so as to achieve the purpose of cooling down. However, the number of frames of the game will be greatly reduced. This experience is not ideal.
photograph
Left: Xiaomi 4 shutter 1/1873 ISO100 F/1.8 Right: Xiaomi 4c shutter 1/1967 ISO101 F/2
Click the upper right corner of the figure to see 100% details of the original image
Left: Xiaomi 4 shutter 1/189 ISO100 F/1.8 Right: Xiaomi 4c shutter 1/231 ISO101 F/2
Click the upper right corner of the figure to see 100% details of the original image
The camera of Xiaomi 4 uses Sony's IMX214 sensor, with 13.51 million pixels, CMOS size of 1/3.06, single pixel size of 1.12um, and aperture of F/1.8. The camera sensor of Xiaomi 4c has two models, namely Samsung's S5K3M2 and Sony's IMX258. The high-end Xiaomi 4c we evaluated uses Sony's IMX25813 million pixels, The CMOS size is 1/3.06, the size of a single pixel is 1.12um, and the aperture is F/2.0. In terms of parameters, the IMX214 and the IMX258 are very similar. From the performance of the first group of daytime samples, they are very similar in terms of white balance, analytical power, and dynamic range, as if they were taken by the same mobile phone.
Left: Xiaomi 4 shutter 1/717 ISO100 F/1.8 Right: Xiaomi 4c shutter 1/841 ISO101 F/2
Click the upper right corner of the figure to see 100% details of the original image
In the backlight scene during the group day, we can find that the white balance of Xiaomi 4c has obviously shifted. Compared with Xiaomi 4 with normal white balance, the whole picture of Xiaomi 4c is blue and very blue. This situation does not happen occasionally. Xiao Bian tried several scene switches during shooting to see whether Xiaomi 4c can obtain normal white balance, The result is futile. This time, the white balance of Xiaomi 4c does have a problem, and the probability will be greater under weak light conditions.
In terms of analytical power, we observed the edge analytical power of 100% of the original image of the two. Some leaves in Xiaomi 4 have been pasted together. Although Xiaomi 4c can not clearly see the outline of the leaves, in the picture of Xiaomi 4c, the boundary between the leaves and the sky background is still very obvious. In this group of backlit scenes, the white balance of Xiaomi 4 is obviously better than that of Xiaomi 4c, The analytical force of Xiaomi 4c is better than that of Xiaomi 4.
Left: Xiaomi 4 shutter 1/373 ISO100 F/1.8 Right: Xiaomi 4c shutter 1/709 ISO100 F/2
Click the upper right corner of the figure to see 100% details of the original image
In this potted plant scene, let's take a look at the color performance of the two. From the perspective of parameters, we can see that the shutter of Xiaomi 4 is slower than that of Xiaomi 4c, while the ISO is 100 for both. In this case, the part of the sample of Xiaomi 4 where the sun shines on the leaves is overexposed, while the exposure of Xiaomi 4c is better, After 100% detail magnification, it can be found that the natural saturation of Xiaomi 4c is higher. In this group of scenes, the white balance of Xiaomi 4c is not offset, and the natural saturation and exposure are better than Xiaomi 4.
at night
Left: Xiaomi 4 shutter 1/17 ISO700 F/1.8 Right: Xiaomi 4c shutter 1/17 ISO755 F/2
Click the upper right corner of the figure to see 100% details of the original image
In this group of indoor samples under weak light, Xiaomi 4c has a white balance deviation again, and the white balance performance of Xiaomi 4 is still normal. Compared with the normal white balance of Xiaomi 4, we can see that the color of Xiaomi 4c is obviously cooler and lighter.
Left: Xiaomi 4 shutter 1/14 ISO3200 F/1.8 Right: Xiaomi 4c shutter 1/12 ISO2602 F/2
Click the upper right corner of the figure to see 100% details of the original image
Left: Xiaomi 4 shutter 1/17 ISO1100 F/1.8 Right: Xiaomi 4c shutter 1/20 ISO636 F/2
Click the upper right corner of the figure to see 100% details of the original image
Left: Xiaomi 4 shutter 1/14 ISO3200 F/1.8 Right: Xiaomi 4c shutter 1/12 ISO2453 F/2
Click the upper right corner of the figure to see 100% details of the original image
In the night demo, Xiaomi 4 and Xiaomi 4c have no optical anti shake, and both of them are very mediocre. It can only be said that they normally show the level of 13 million pixels in domestic mobile phones. What needs to be pasted is still to be pasted, and what needs to be noisy is always to come. However, for a mobile phone with a retail price of 1299/1499 yuan, we can't ask too much, It can't be compared with iPhone or Samsung flagship.
Compared with Xiaomi 4, Xiaomi 4c's photography has its own advantages. Xiaomi 4c's analytical power is slightly better than Xiaomi 4 in some scenes, but its white balance is obviously not as stable as Xiaomi 4's. Since there is no Xiaomi 4c with Samsung S5K3M2 sensor on hand, it is unclear whether this white balance problem is exclusive to the Xiaomi 4c of IMX258.
Endurance, heating and fast charging
Xiaomi 4c supports Qualcomm's QC2.0 fast charging standard. The measured charging input power is 9.183V 0.938A at 60% electricity, which is worthy of the name of QC2.0 fast charging.
In terms of endurance, it may be that our expectations for Xiaomi 4c are too high. In our three and a half hour endurance test, Xiaomi 4c with 3080mAh battery, Snapdragon 808 SoC, and 5-inch 1080P screen has the same endurance results as the standard version of Xiaomi Note with 5.7 inch screen, Snapdragon 801, and 3000mAh. In the game part of endurance test, Xiaomi 4c consumes more power.
In the heating part, the highest temperature of Xiaomi 4c was 41.7 degrees when it ran NBA 2K15 for one hour. However, in the test, it was found that 41.7 degrees was not its highest temperature. In the test process, if the temperature of Xiaomi 4c was too high, its Snapdragon 808 would automatically shut down two A57 cores and force cooling, which may be Xiaomi's own temperature control scheme, This also led to the decline of the number of game frames of Xiaomi 4c after the high temperature. It is not uncommon in the industry to reduce the performance for the sake of temperature.
summary
This time, the Xiaomi 4c's photo performance was a bit regrettable. I hope the official website can launch an update to correct the white balance as soon as possible. What's more, the temperature control scheme of Xiaomi 4c's Snapdragon 808 is really not good. After a long time of running a large mobile phone, the situation that the Snapdragon 810's big core A57 was turned off also appeared. But even so, Xiaomi 4c still gives us a good feeling overall, Xiaomi 4c has achieved the balance in terms of performance, screen, feel and so on. At the same time, it also uses USB Type-C interface and QC2.0 fast charge. It can be said that it has everything it needs except fingerprint recognition, and the price of 1299/1499 yuan is even more difficult to refuse.
As an aside, we like to make mobile phones. We found that Xiaomi skillfully set the price of Xiaomi 4c between 1300-1500. There are not many mobile phones at this price in the market, either 799-1000 yuan, 1000 yuan, or 1799-2000 yuan, 2000 yuan. Domestic mobile phones are the most in these two prices, while the price of Xiaomi 4c, 1299-1500 yuan, is very rare, The price of mobile phones at this price is basically the flagship of the previous year, which has slowly dropped from 2000 to this price. Therefore, it is difficult for us to find a competitor suitable for Xiaomi 4c at this price
