As a former member of China Kulian, Kupai was once very popular, but now life is not so good. Shortly after the establishment of Qiku mobile phone with 360, Kupai had an affair with LeEco. The three companies also had a court battle. Finally, after losing the control of Qiku, Kupai finally married LeEco. After that, Kupai also began a hot reform road, During this period, we launched a Cool1 that focuses on cost performance. Unfortunately, the good times are not long. Soon, LeEco reported a shortage of funds due to the rapid expansion, which made Cool1, which had already been operating poorly, fall into trouble again. However, under the leadership of Liu Jiangfeng, Cool1 never fell down. After six months of hardships, It launched its first flagship mobile phone, Coolpad Changer S1. This mobile phone in the name of Changer also symbolizes Coolpad's determination to reform. Today we will see how this model performs.
Unpacking and appearance
The packaging is very simple, and the front is printed with the English words of Cool Changer.
The S1 signature selling point Harman/Kardon is printed on the side.
The model we got this time is music exclusive version, which uses Snapdragon 821 processor+4GB running memory+64GB built-in storage, and built-in 4070mAh battery.
The words simple good are printed on the bottom, which means that Coolpad will adopt a relatively simple design style.
In addition to the regular charging head and data cable, it also comes with Haman Carton customized earphones.
The attached fast charging head is 3.6-8V 3A or 12V 2A, and the maximum power is 24W.
The earphone model included this time is AKG N18, which is customized for Harman Carton. Only S1 music exclusive version will include this earphone. It is reported that the market retail price of this earphone is 999 yuan.
Because the standard 3.5mm headphone jack is cancelled by S1, the USB Type-C conversion 3.5mm adapter is attached.
The volume control module is printed with Coolpad logo, which also means that it is specifically customized for Coolpad by Harman Carton.
The overall appearance of the headset continues AKG's consistent design style. It adopts an in ear design and comes with multiple sizes of earplugs. Users can change earplugs according to their own usage habits.
The earphone belongs to dynamic earphone, which has the characteristics of full low frequency, large sound field, etc., and three frequencies will be relatively balanced.
Now let's take a look at the fuselage design of Changer S1. As the first flagship model acquired by LeEco, Changer S1 continues the rich LeEco style, and its fuselage design is quite similar to LePro3.
The system also continues LeEco's EUI, and its design of combining multi task switching and quick switch is quite useful. However, users who are new to the system need some time to adapt.
In terms of fuselage design, the overall design is quite simple, mainly white, without any redundant design. On the forehead, the earpiece is used as a symmetrical opening on both sides. On the left side, there are various sensors, and on the right side, there is an 8 million pixel front camera.
The chin design is also quite simple, with three hidden touch buttons, which can be perfectly hidden when not lit.
From left to right are the multi task button, the Home button and the return button. The soft white light will not be dazzling.
The back of the fuselage also continues LeEco's design style. It is made of metal, has a very delicate sandblasting surface, and the starting point is very smooth. The treatment process is good.
In terms of the rear camera, it is equipped with a 16 million pixel Sony IMX298 sensor. Next to it is a two-color fill light, and below the camera is a fingerprint sensor. In our actual use, its performance is moderate, slightly slow, but compared with previous LeTV phones, it has made considerable progress.
In addition to the COOL logo on the bottom of the fuselage, the words Harman/Kardon indicate that the aircraft has Harman Kardon certified audio technology.
The design of the fuselage frame is also simple, and the fuselage top is only equipped with noise reduction microphone and infrared interface.
The 3.5mm headphone jack is canceled, so the bottom of the machine body also adopts symmetrical openings, in which the microphone is hidden. Coolpad has dual stereo speakers with large sound cavities built in the top and bottom of the body respectively, which is the only mobile phone with Harman Carton certified audio at present.
The volume button and power button are all located on the right side of the fuselage, so there is only a SIM card slot on the left side of the fuselage.
The volume button is located at the upper position, and the length of the button is shorter, while the power button is located below the volume button, which is more convenient for users to operate, and the button is also longer.
Performance and system experience
In terms of system experience, Coolpad has continued to use LeEco's EUI system since Cool1. The overall color matching is still quite amazing, the UI design is also relatively fine and durable, the overall operation logic is also quite humanistic, and the Harman Carton sound effect option has also been added. On the whole, Coolpad is obviously better than its previous ROM. Judging from the current situation, Coolpad will continue to use the EUI operating system for a period of time in the future. Although as a former member of China Coolpad, it seems somewhat lacking in character to use his operating system, but as a company that has just experienced hardships and is rising again, this does not seem to be a bad thing, Using the mature EUI can greatly reduce the energy consumed by Coolpad in the system, and can focus more on hardware development.
Processor performance
As a model adopting Snapdragon 821, its processor performance is obviously top class. Its single core performance and multi-core performance have reached the level that Snapdragon 821 should have, and its performance in pi and RAR is also outstanding among Snapdragon 821 models.
Graphics Performance
In terms of graphics performance, its performance is also excellent. As a model with Adreno530, it is in the leading group in many test scenarios, but everyone also uses Snapdragon 821 processor, which is not much different.
Memory read/write performance
In terms of memory read/write speed, except for Xiaomi MIX, all other models that use Snapdragon 821 are not much different, and everyone is basically at the same level. Coolpad Changer S1 is also well behaved, not surprising, but also reaching the level of Snapdragon 821+UFS2.0.
Auditory experience
As the brand selling point of Changer S1, Harman Carton certification is its brand selling point. It not only has a Harman Carton certification speaker with two large sound chambers built in, but also its music exclusive version comes with the AKG N18 earplugs customized by Harman Carton. This is also the strongest earplug that comes with smart phones on the market at present. It is full of sincerity. Coolpad has made great efforts in audio this time. First of all, in terms of external amplification, it uses two large voice cavity speakers, with one speaker built in the bottom and the earpiece respectively, so its external amplification effect is quite good. The dual speakers bring a quite loud volume, which is comparable to some small Bluetooth speakers. Moreover, it has dual channels, and has a certain surround sound effect when listening to songs recorded by human ears. Compared with ordinary single speaker models, it undoubtedly has greater advantages.
The overall appearance of the headset continues AKG's consistent design style. It adopts an in ear design and comes with multiple sizes of earplugs. Users can change earplugs according to their own usage habits. Of course, as the earplugs produced by AKG, their workmanship and quality are quite excellent, and the details are well handled. For example, the main line is made of nylon, which can effectively prevent knots. The overall appearance is also quite exquisite. Whether it is the processing of the shell paint, polishing and trimming, or the texture of the material, it is done well. The huge AKG logo also shows its identity.
The N18 attached this time is a dynamic earphone. Generally speaking, this kind of earplug has the characteristics of full low frequency and large sound field, and the tri frequency is often balanced. In our actual listening sense test, it did show good audio quality, but because it was a customized earplug, AKG made improvements to the requirements of Harman Carton. Although it still maintained the high standard of AKG, it seems that it deliberately enhanced the low-frequency experience, that is, the N18 has a bit of the feel of Beats earphones, which is quite dynamic, The rumble of drums is very impressive. In terms of the intermediate frequency, the control of the voice is relatively good, the connection is smooth, the voice is full, and it is relatively durable. In terms of high frequency, the dental sound is sharp and clear, and the overall control is not bad, but there is a certain sense of burr, and the sound is a bit hard to put away. On the whole, the earphone is suitable for listening to pop music, especially the dynamic percussion music. The bass of the fist is relatively straightforward, and the sound characteristics are quite distinctive. As a thousand yuan dynamic band, it has done a good job.
screen
In terms of the screen, it uses a 5.5 inch IPS screen with a resolution of 1080P. The screen mode is adjusted to the natural mode. The average DeltaE of 104 colors is 2.7, and the maximum is 5.9. The performance is quite excellent. In terms of color gamut, its sRGB coverage is 96.6%, and the contrast is 1312:1, which is the normal level of IPS screen. The color temperature is 8857k, which is relatively cold. The highest brightness is 455 nits, which is not bad.
photograph
In terms of photography, it uses the Sony IMX298 sensor with 16 million pixels, which is also a sensor used by many models. Coolpad has equipped it with a 6P lens with an aperture of f/2.0, and equipped with a two-color flash. Let's see how its imaging effect is.
Left - Samsung S7 Middle - Cool Changer S1 Right - One Plus 3T
100% magnification
In this group of samples, there is not much difference between the three. In terms of details, Coolpad and Yijia, which also use IMX298, will be slightly better because of their pixel advantages. There is no difference between the three in terms of white balance, and Kupai is slightly more adequate in terms of exposure, but the three still do not open the gap.
Left - Samsung S7 Middle - Cool Changer S1 Right - One Plus 3T
100% magnification
In terms of details, there is no big difference between the three. In the leaves and grass at the bottom, Samsung's performance will be a little bit better, and then more. In terms of white balance, Samsung and Yijia are relatively accurate, but Coolpad is obviously a bit blue, whether it is the main building or the sky, it is a bit blue.
Left - Samsung S7 Middle - Cool Changer S1 Right - One Plus 3T
100% magnification
In terms of the analytical power of the postgraduate entrance examination, the performance of the three is relatively excellent. Coolpad has the best performance and high sharpness, so the font is easier to identify. Samsung's sharpness is better than one plus, and the font edge sharpening is also obvious, but it is slightly inferior to one plus due to the limitation of pixels. However, in terms of the details of the grass on the lower left, Samsung is obviously better, with clear and layered branches and leaves, followed by Coolpad, and a little more serious smearing.
Left - Samsung S7 Middle - Cool Changer S1 Right - One Plus 3T
100% magnification
In this group of scenes shot at a relatively close distance, there is no difference between the three. Samsung is the best performer, and all aspects are relatively balanced. The second is Coolpad, with good sharpness and details, but the white balance is slightly red. Yijia's performance is a bit strange. Although the white balance is relatively accurate, the overall picture is somewhat white.
Left - Samsung S7 Middle - Cool Changer S1 Right - One Plus 3T
100% magnification
In terms of white balance, one plus 3T is the most accurate, followed by Coolpad, and Samsung is a bit too flashy. In terms of leaf vein details, Samsung is the best performer, followed by Yijia, and finally Coolpad, but the gap between the three is very small.
On the whole, Coolpad Changer S1 performs well in the daytime. Although the white balance is a bit erratic, its details, sharpness and analytical power have all reached the level that IMX298 should have, and its photography mode is relatively intelligent. It does not provide HDR switch, night view mode switch and other settings, but uses automatic scene recognition, The camera will automatically switch the shooting mode according to the metering.
Top left - Samsung S7 top right - Coolpad Changer S1
Bottom left - One plus 3T HDR mode Bottom right - One plus 3T HQ mode
100% magnification
If there is little difference between the three in the daytime, they will be slightly apart in the dark light environment at night. In terms of picture details, the best way to keep it is to open the HQ mode, followed by Samsung. The picture brightness is the highest when HDR mode is turned on. Coolpad's picture brightness is also good, but the picture color is a bit pale.
Top left - Samsung S7 top right - Coolpad Changer S1
Bottom left - One plus 3T HDR mode Bottom right - One plus 3T HQ mode
100% magnification
In such a dark scene, Samsung, with the largest single pixel area, undoubtedly began to show its advantages. Qi is the best model in terms of details, noise control and image purity. The second is the addition of HQ mode. The picture is also relatively pure, and the details are only slightly inferior to Samsung. The third is Coolpad. The brightness of the picture is a little low, and the details are OK, but the painting feels a little heavy. The worst thing is to turn on the HDR mode. Although it has the highest picture brightness, it has too much noise, heavy graininess, and is not clean enough to smear.
Top left - Samsung S7 top right - Coolpad Changer S1
Bottom left - One plus 3T HDR mode Bottom right - One plus 3T HQ mode
100% magnification
In this group of scenes, Samsung has the best color performance and the highest picture brightness. The details are still good, but the noise is a little bit too much. The purest picture is one plus 3T in HQ mode. The picture is quite clean, and there is almost no graininess. However, because the brightness is relatively low, the details in the dark part of the building, such as the bottom of the rain, are inferior to Samsung. The overall picture feeling of Coolpad is close to the addition of HQ mode, and the picture is also relatively pure, but the picture brightness is lower, and the tolerance is also somewhat poor, so the color performance is poor.
Top left - Samsung S7 top right - Coolpad Changer S1
Bottom left - One plus 3T HDR mode Bottom right - One plus 3T HQ mode
100% magnification
In this scene, the performance of the four mobile phones is fairly good, of which Samsung is still the best, with legible characters, and the details of the grids on both sides are well preserved. The second is to turn on the HDR mode. Although the noise control is still impressive and the picture is full of graininess, it also brings higher picture brightness. Coolpad is close to HQ mode, and the characters can be easily recognized, but the brightness of the picture is not enough. It may be that its automatic night view mode does not turn on HDR.
Top left - Samsung S7 top right - Coolpad Changer S1
Bottom left - One plus 3T HDR mode Bottom right - One plus 3T HQ mode
100% magnification
Samsung still takes advantage of its large area per pixel, with the most natural color performance and the highest picture brightness. The second is the addition of HQ mode, which retains the best details and has the most distinct layers of petals and stamens. However, whether it is HQ mode or HDR mode, the color is somewhat dim and white. In terms of overall appearance, Coolpad is second only to Samsung. Although it is relatively red, the color of the picture is very attractive. Unfortunately, after 100% magnification, its stamens and petals have almost been painted in the same color, which also shows that its analytical power is insufficient to some extent.
On the whole, although the performance of its daytime proof is not far from that of Samsung S7 and One Plus 3T, at night, its performance is slightly unsatisfactory. Although noise control, image purity and sharpness are good, it seems that its night view mode will not be used with HDR at the same time, so its performance in image brightness and resolution is not ideal, If Coolpad can further optimize the algorithm at night, it will perform better.
Endurance&fast charging&heating
In terms of endurance, after three hours of high-intensity endurance test, Coolpad S1 still has 77% of its remaining power, ranking top among all the tested models. Its 5.5 fuselage holds a 4070mAh lithium-ion battery, which also guarantees its endurance.
In terms of heating, after about half an hour of NBA 2K15, the maximum temperature on the front side was about 39.1 degrees Celsius, and the maximum temperature on the back side was 40.3 degrees Celsius. The heating control was quite good. After such a high-intensity test, the temperature control performance was quite good. It is worth mentioning that although the main heating parts of Coolpad S1 are also located in the middle and upper parts of the fuselage, the temperature distribution of the whole machine is relatively uniform, and there is no local hot feeling.
In terms of charging speed, the peak value can reach 23W, and the average value can be stabilized at about 20W, which is relatively fast. This also provides protection for batteries up to 4070mAh.
summary
As a revolutionary work of Coolpad, Coolpad Changer S1 has a flagship hardware configuration+Harman Carton certified audio, which has strong enough performance and full of selling points. It is also very sincere. However, as a model called "Changer", its appearance design copied from LeEco Pro3 is still slightly puzzling. In order to make a sound box certified by Harman Carton Audio, it has made a lot of changes inside the body, but the majority of consumers do not understand these, combined with LeEco's cooperation with Coolpad, I'm afraid many users will think that this is a "branded mobile phone" without changing its appearance. If S1 can continue to make breakthroughs in appearance, I believe it will have a broader market space. Although there are still too many LeEco shadows, the Changer S1 has done quite well on the whole. There is no doubt that it has become the most comprehensive model of Coolpad ever.
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