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Lenovo K12 (China) 64GB vs vivo Y51 (2020, September) 128GB: Which is the best?

Created date: 2020-12-18 17:07:36

Lenovo K12 (China) 64GBvivo Y51 (2020, September) 128GB
Lenovo K12 (China) 64GBvivo Y51 (2020, September) 128GB

Are you having trouble comparing the differences in features and performance of the "Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", or unsure about their differences in ease-of-use, and wondering which to buy? We did a deep-dive comparison of the features, specs, and capabilities of these two smartphone, and provided our rating of which one was a better buy.

Lenovo K12 (China) 64GBvivo Y51 (2020, September) 128GB
Lenovo K12 (China) 64GB

vivo Y51 (2020, September) 128GB

General rating:

66.3/100

(The 4720th of all smartphones)

71.9/100

(The 4596th of all smartphones)

Holding comfort
59/100
60/100
Weight
50/100
55/100
Screen size
90/100
90/100
Display quality
54/100
84/100
Battery life
- /100
- /100
Processing power
77/100
83/100
Memory capacity
70/100
70/100
Storage capacity
67/100
90/100
Rear camera performance
97/100
97/100
Front camera performance
58/100
75/100

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", performance comparison

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB" size comparison. Which to choose?

The size of the body has a big influence on the ease of carrying and one-handed operation. The narrower the width, the easier it is to firmly grasp and hold, but you also have to take into account the device's thickness. Also, if the width and height are smaller, its easier to operate one-handed since its easier to extend your fingers. On the contrary, if the width and height are large, it's difficult to fit in your pocket and is bulky even when put in a bag, and portability is impaired.

The "Lenovo K12 (China) 64GB" has a width of 75.7mm, a length of 165.2mm, and a thickness of 9.2mm. Also, the "vivo Y51 (2020, September) 128GB" has a width of 75.2mm, a length of 159.3mm, and a thickness of 8.7mm.

Comparing the width and thickness of the body, there isn't much difference between the "Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB" in terms of size. For that reason, the ease of gripping and carrying the devices in one hand is about the same for both. Therefore it's better to compare them in terms of performance and functionality.

Comparing the width and thickness of the body, there isn't a large difference in size between the "Lenovo K12 (China) 64GB" and the "vivo Y51 (2020, September) 128GB". For that reason their one-handed operability, portability, and bulkiness when carried is about the same. That's why I think it's better to compare them in terms of other aspects of performance and functionality.

Comparing the overall size of the two devices, there isn't a big difference in size between the "Lenovo K12 (China) 64GB" and the "vivo Y51 (2020, September) 128GB". For that reason the ease of carrying and use with one hand is about the same for both. That's why it is better to compare the two in terms of other aspects of performance and functionality.

ScoreDimensions (width x height x thickness)
Lenovo K12 (China) 64GB59/10075.7mm x 165.2mm x 9.2mm
vivo Y51 (2020, September) 128GB60/10075.2mm x 159.3mm x 8.7mm

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", which is more comfortable to hold? Weight comparison

The weight of the device affects hand fatigue and the burden placed upon the wrist. The lighter it is, the longer you'll be able to operate the device without tiring. Also, if the burden placed on the wrist is lower, you'll be able to use the device more comfortably. However if the weight isn't right for you, it could place more of a burden on your body, causing you to feel stress.

The weight of the "Lenovo K12 (China) 64GB" is about 200.0g, and the weight of the "vivo Y51 (2020, September) 128GB" is about 186.7g. Comparing the weight of the two devices, the "vivo Y51 (2020, September) 128GB" is a lighter smart phone than the "Lenovo K12 (China) 64GB", with a difference of about 13.3g. For that reason the "vivo Y51 (2020, September) 128GB" is a smart phone that is less likely than the "Lenovo K12 (China) 64GB"to put a burden on your fingers and wrist when used for an extended period. That's why we recommend the "vivo Y51 (2020, September) 128GB" over the "Lenovo K12 (China) 64GB".

ScoreWeight
Lenovo K12 (China) 64GB50/100200.0g
vivo Y51 (2020, September) 128GB55/100186.7g

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", whose display is easier to use?

The size of the screen affects usability and screen visibility. A larger screen means larger letters and buttons on apps, so the user is less likely to tap adjacent buttons by mistake. In addition, the user can enjoy a more intense experience when playing games and watching videos.

The "Lenovo K12 (China) 64GB" has a 6.5inch display. Also, the "vivo Y51 (2020, September) 128GB" has a 6.38inch display. Comparing the screen size, there is a negligible difference in screen size between the "Lenovo K12 (China) 64GB" and the "vivo Y51 (2020, September) 128GB". As a result, the app buttons on both are equally easy to press. We recommend comparing them based on other aspects of performance and functionality.

ScoreDisplay size
Lenovo K12 (China) 64GB90/1006.5inch
vivo Y51 (2020, September) 128GB90/1006.38inch

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", which has a clearer display?

Pixel density affects picture quality, and the higher the pixel density, the better the picture quality, which means the user can gain more enjoyment from games and videos. In addition, higher picture quality decreases eyestrain, which means that the user will experience less eye fatigue after prolonged use.

The resolution on the "Lenovo K12 (China) 64GB" is 720 x 1600, and pixel density is 269ppi. Also, the resolution on the "vivo Y51 (2020, September) 128GB" is 1080 x 2340, and pixel density is 403ppi. Comparing the pixel count, the "vivo Y51 (2020, September) 128GB" has much higher pixel density than the "Lenovo K12 (China) 64GB", with a difference of roughly 134ppi. In terms of having better picture quality and exerting less strain on the eyes, the "vivo Y51 (2020, September) 128GB" is superior to the "Lenovo K12 (China) 64GB". If you are looking for a smartphone that is easy on the eyes, displaying texts and pictures clearly without any blurring, we recommend the "vivo Y51 (2020, September) 128GB" over the "Lenovo K12 (China) 64GB".

ScorePixel density
Lenovo K12 (China) 64GB54/100269ppi
vivo Y51 (2020, September) 128GB84/100403ppi

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", a summary of the differences in battery life

Battery performance greatly affects battery life, but greater battery capacity does not necessarily mean greater battery life, since battery efficiency should also be considered. Bigger screens and higher CPU performance will mean the batteries are depleted more quickly.

ScoreBattery capacity
Lenovo K12 (China) 64GB - /100
vivo Y51 (2020, September) 128GB - /100

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", which has better CPU?

CPU performance affects the ability to process programs, and the ability to process programs is determined by the product of the number of cores in the CPU and the CPU frequency. The higher this performance is, the more smoothly apps and games will run, and with low performance apps and games become heavy and stress is experienced.

The "Lenovo K12 (China) 64GB"'s CPU is a Qualcomm SM4250 Snapdragon 460, with performance measured at 1.8GHz+1.6GHz×8(8.0-cores). Also, the "vivo Y51 (2020, September) 128GB"'s CPU is a Qualcomm SDM665 Snapdragon 665, with performance measured at 2.0GHz+1.8GHz×8(8.0-cores). Comparing CPU performance, the "vivo Y51 (2020, September) 128GB" has higher specs compared to the "Lenovo K12 (China) 64GB". For that reason, the "vivo Y51 (2020, September) 128GB" allows for more comfortable use of apps, and games that run more smoothly. That's why we recommend the "vivo Y51 (2020, September) 128GB" over the "Lenovo K12 (China) 64GB".

ScoreCPU specs
Lenovo K12 (China) 64GB77/1001.8GHz+1.6GHz×8(8.0-cores)
vivo Y51 (2020, September) 128GB83/1002.0GHz+1.8GHz×8(8.0-cores)

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", what's the difference in memory capacity?

RAM affects multitasking ability and the stability of apps. The larger the amount of RAM is, the more stability there will be even in situations where multiple apps are running simultaneously, allowing for comfortable use. In addition, animation will be more smooth, and apps will be less likely to freeze or crash. Also, without sufficient RAM, there are games you won't be able to run, so it is necessary to be careful.

The weight of the "Lenovo K12 (China) 64GB" is 4.0GB and the weight of the "vivo Y51 (2020, September) 128GB" is 4.0GB. Comparing the devices in terms of RAM, there is almost no difference in the amount of RAM of the "Lenovo K12 (China) 64GB" and the "vivo Y51 (2020, September) 128GB". For that reason they have about the same level of multitasking performance and 3D game and VR smoothness. That's why it is better to make a comparison in terms of other aspects of performance and functionality.

ScoreRAM size
Lenovo K12 (China) 64GB70/1004.0GB
vivo Y51 (2020, September) 128GB70/1004.0GB

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", which has more data storage?

Storage capacity affects the amount of data that is capable of being stored. The larger the storage capacity, the more pictures you can take and the more applications you can install. In addition, if your smartphone accepts SD cards, then you can increase its storage capacity. However, there are performance related drawbacks, including a slower data transfer rate than the primary memory, and you cannot transfer all your data on the card, so be warned.

The data storage capacity of the "Lenovo K12 (China) 64GB" is 64.0GB. Also the "vivo Y51 (2020, September) 128GB" is 128.0GB. Regarding storage capacity, the "vivo Y51 (2020, September) 128GB" has a much larger data storage capacity compared to the "Lenovo K12 (China) 64GB", with a roughly 64GB difference. In terms of the number of pictures you can save and the applications that you can install, the "vivo Y51 (2020, September) 128GB" is superior to the "Lenovo K12 (China) 64GB". If you are looking for a smartphone that can save more data, we recommend the "vivo Y51 (2020, September) 128GB" over the "Lenovo K12 (China) 64GB".

ScoreStorage size
Lenovo K12 (China) 64GB67/10064.0GB
vivo Y51 (2020, September) 128GB90/100128.0GB

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB" rear camera performance comparison. Which has a higher resolution?

One factor that determines the performance of the exterior camera located on the back of the device (the rear/back camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"Lenovo K12 (China) 64GB" has a 48.0MP main camera. Also, "vivo Y51 (2020, September) 128GB" has a 48.0MP main camera. Comparing rear camera performance, the "Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB" have approximately the same pixel count. As a result, they can both take pictures and shoot videos of roughly the same quality. Therefore, we recommend comparing the two based on other aspects of performance and functionality.

ScoreRear-camera resolution
Lenovo K12 (China) 64GB97/10048.0MP
vivo Y51 (2020, September) 128GB97/10048.0MP

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", whose front camera has a better picture quality?

One factor that determines the performance of the exterior camera located on the front of the device (the in/front camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"Lenovo K12 (China) 64GB" has an 8.0MP front camera and "vivo Y51 (2020, September) 128GB" has an 16.0MP front camera. Comparing rear camera performance, the front camera of the "vivo Y51 (2020, September) 128GB" has a much higher pixel count compared to the "Lenovo K12 (China) 64GB", with a roughly 8MP difference. As a result, the "vivo Y51 (2020, September) 128GB" is more suited than the "Lenovo K12 (China) 64GB" for shooting videos and taking pictures. If you are looking for a smartphone that is suited for shooting high resolution selfies which will look clean when printed, we recommend the "vivo Y51 (2020, September) 128GB" over the "Lenovo K12 (China) 64GB".

ScoreFront-camera resolution
Lenovo K12 (China) 64GB58/1008.0MP
vivo Y51 (2020, September) 128GB75/10016.0MP

"Lenovo K12 (China) 64GB" and "vivo Y51 (2020, September) 128GB", performance comparison by specification sheet

Lenovo K12 (China) 64GBvivo Y51 (2020, September) 128GB
ImageLenovo K12 (China) 64GBvivo Y51 (2020, September) 128GB
MakerLenovovivo
Release date2020-12-122020-09-19
ColorNavy Blue/GrayMystic Black/Jazzy Blue/Dreamy White
OSAndroidAndroid
Dimensions (width x height x thickness)75.7mm x 165.2mm x 9.2mm75.2mm x 159.3mm x 8.7mm
Weight200.0g186.7g
Display size6.5inch6.38inch
Display typeIPS LCDSuper AMOLED
Screen resolution (width x height)720 x 16001080 x 2340
Pixel density269ppi403ppi
ChipsetQualcomm SM4250 Snapdragon 460Qualcomm SDM665 Snapdragon 665
CPU specs1.8GHz+1.6GHz×8(8.0-cores)2.0GHz+1.8GHz×8(8.0-cores)
RAM size4.0GB4.0GB
Storage size64.0GB128.0GB
Rear-camera resolution48.0MP48.0MP
Front-camera resolution8.0MP16.0MP

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