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Which should you buy, the Galaxy J2 Pro (2018) 16GB or Cat S31 (2017) 16GB? We offer a thorough comparison of the differences in functions, specifications and performance between the two

Created date: 2018-09-30 22:20:36, Updated date: 2020-04-16 15:42:06

Galaxy J2 Pro (2018) 16GBCat S31 (2017) 16GB
Galaxy J2 Pro (2018) 16GBCat S31 (2017) 16GB

How did the evaluations between the "Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB" differ when we compared the two? We reviewed each of the most commonly scrutinized features. If you are thinking about which smartphone to get, check out this review immediately!

Galaxy J2 Pro (2018) 16GBCat S31 (2017) 16GB
Galaxy J2 Pro (2018) 16GB

Cat S31 (2017) 16GB

General rating:
Holding comfortrating-image3.3
72.3mm x 143.8mm x 8.4mm
rating-image2.8
74.4mm x 146.0mm x 12.6mm
Weightrating-image3.5
153.0g
rating-image2.5
200.0g
Screen sizerating-image3.7
5.0inch
rating-image3.5
4.7inch
Display qualityrating-image1.8
220ppi
rating-image3.2
312ppi
Battery liferating-image3.0
2600.0mAh
rating-image4.0
4000.0mAh
Processing powerrating-image2.0
1.4GHz×4(4.0-cores)
rating-image1.8
1.3GHz×4(4.0-cores)
Memory capacityrating-image2.5
2.0GB
rating-image2.5
2.0GB
Storage capacityrating-image2.5
16.0GB
rating-image2.5
16.0GB
Rear camera performancerating-image2.5
8.0MP
rating-image2.5
8.0MP
Front camera performancerating-image2.5
5.0MP
rating-image1
2.0MP

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", performance comparison

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB" 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 "Galaxy J2 Pro (2018) 16GB" has a width of 72.3mm, a length of 143.8mm, and a thickness of 8.4mm. Also, the "Cat S31 (2017) 16GB" has a width of 74.4mm, a length of 146.0mm, and a thickness of 12.6mm.

Comparing the width and thickness of the body, the "Galaxy J2 Pro (2018) 16GB" is considerably smaller and more compact than the "Cat S31 (2017) 16GB". The "Galaxy J2 Pro (2018) 16GB" excels over the "Cat S31 (2017) 16GB" in terms of being easier to hold with one hand and is therefore less likely to be accidentally dropped. If you're looking for a smart phone with superior grip and hand fit, we recommend purchasing the "Galaxy J2 Pro (2018) 16GB" over the "Cat S31 (2017) 16GB".

Comparing the width and thickness of the body, there isn't a large difference in size between the "Galaxy J2 Pro (2018) 16GB" and the "Cat S31 (2017) 16GB". 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, the "Galaxy J2 Pro (2018) 16GB" has a large size compared to the "Cat S31 (2017) 16GB". For that reason the "Galaxy J2 Pro (2018) 16GB" is a size that is easier to use in one hand and comfortably carry than the "Cat S31 (2017) 16GB". That's why we recommend the "Galaxy J2 Pro (2018) 16GB".

ScoreDimensions (width x height x thickness)
Galaxy J2 Pro (2018) 16GB66/10072.3mm x 143.8mm x 8.4mm
Cat S31 (2017) 16GB55/10074.4mm x 146.0mm x 12.6mm

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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 "Galaxy J2 Pro (2018) 16GB" is about 153.0g, and the weight of the "Cat S31 (2017) 16GB" is about 200.0g. Comparing the weight of the two devices, the "Galaxy J2 Pro (2018) 16GB" is a considerably lighter smart phone than the "Cat S31 (2017) 16GB", and there is a difference of about 47g. In terms of the burden placed upon your fingers and wrist, the "Galaxy J2 Pro (2018) 16GB" is superior to the "Cat S31 (2017) 16GB". If you are going for a smart phone that won't lead to hand fatigue even after extended use, and is less likely to place a burden on your fingers, we recommend purchasing the "Galaxy J2 Pro (2018) 16GB" over the "Cat S31 (2017) 16GB".

ScoreWeight
Galaxy J2 Pro (2018) 16GB69/100153.0g
Cat S31 (2017) 16GB50/100200.0g

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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 "Galaxy J2 Pro (2018) 16GB" has a 5.0inch display. Also, the "Cat S31 (2017) 16GB" has a 4.7inch display. Comparing the screen size, there is a negligible difference in screen size between the "Galaxy J2 Pro (2018) 16GB" and the "Cat S31 (2017) 16GB". 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
Galaxy J2 Pro (2018) 16GB74/1005.0inch
Cat S31 (2017) 16GB69/1004.7inch

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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 "Galaxy J2 Pro (2018) 16GB" is 540 x 960, and pixel density is 220ppi. Also, the resolution on the "Cat S31 (2017) 16GB" is 720 x 1280, and pixel density is 312ppi. Comparing the pixel count, the "Cat S31 (2017) 16GB" has much higher pixel density than the "Galaxy J2 Pro (2018) 16GB", with a difference of roughly 92ppi. In terms of having better picture quality and exerting less strain on the eyes, the "Cat S31 (2017) 16GB" is superior to the "Galaxy J2 Pro (2018) 16GB". If you are looking for a smartphone that is easy on the eyes, displaying texts and pictures clearly without any blurring, we recommend the "Cat S31 (2017) 16GB" over the "Galaxy J2 Pro (2018) 16GB".

ScorePixel density
Galaxy J2 Pro (2018) 16GB36/100220ppi
Cat S31 (2017) 16GB64/100312ppi

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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.

The "Galaxy J2 Pro (2018) 16GB" is 2600.0mAh, and the "Cat S31 (2017) 16GB" is 4000.0mAh. Regarding battery capacity, the "Cat S31 (2017) 16GB" has greater battery capacity than the "Galaxy J2 Pro (2018) 16GB", with a 1400mAh difference. Since the "Cat S31 (2017) 16GB" can be used for longer periods without recharging than the "Galaxy J2 Pro (2018) 16GB", it is great for outdoor use. If you want a smartphone with a longer battery life, we recommend the "Cat S31 (2017) 16GB" over the "Galaxy J2 Pro (2018) 16GB".

ScoreBattery capacity
Galaxy J2 Pro (2018) 16GB59/1002600.0mAh
Cat S31 (2017) 16GB80/1004000.0mAh

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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 "Galaxy J2 Pro (2018) 16GB"'s CPU is a Qualcomm MSM8917 Snapdragon 425, with performance measured at 1.4GHz×4(4.0-cores). Also, the "Cat S31 (2017) 16GB"'s CPU is a Qualcomm MSM8909 Snapdragon 210, with performance measured at 1.3GHz×4(4.0-cores). Comparing CPU performance, there is almost no difference in the specs of the "Galaxy J2 Pro (2018) 16GB" and the "Cat S31 (2017) 16GB". For that reason the level of smoothness felt when using apps and comfortable handling of games is about the same. For that reason it is better to compare them in terms of other aspects of performance and functionality.

ScoreCPU specs
Galaxy J2 Pro (2018) 16GB39/1001.4GHz×4(4.0-cores)
Cat S31 (2017) 16GB36/1001.3GHz×4(4.0-cores)

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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 "Galaxy J2 Pro (2018) 16GB" is 2.0GB and the weight of the "Cat S31 (2017) 16GB" is 2.0GB. Comparing the devices in terms of RAM, there is almost no difference in the amount of RAM of the "Galaxy J2 Pro (2018) 16GB" and the "Cat S31 (2017) 16GB". 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
Galaxy J2 Pro (2018) 16GB50/1002.0GB
Cat S31 (2017) 16GB50/1002.0GB

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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 "Galaxy J2 Pro (2018) 16GB" is 16.0GB. Also the "Cat S31 (2017) 16GB" is 16.0GB. Regarding storage capacity, there is a negligible difference in storage capacity between the "Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB". As a result, you can save roughly the same amount of pictures, and install roughly the same amount of applications, on either phone. You are better off comparing them based on other aspects of performance and functionality.

ScoreStorage size
Galaxy J2 Pro (2018) 16GB50/10016.0GB
Cat S31 (2017) 16GB50/10016.0GB

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB" 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.

"Galaxy J2 Pro (2018) 16GB" has a 8.0MP main camera. Also, "Cat S31 (2017) 16GB" has a 8.0MP main camera. Comparing rear camera performance, the "Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB" 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
Galaxy J2 Pro (2018) 16GB50/1008.0MP
Cat S31 (2017) 16GB50/1008.0MP

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", 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.

"Galaxy J2 Pro (2018) 16GB" has an 5.0MP front camera and "Cat S31 (2017) 16GB" has an 2.0MP front camera. Comparing rear camera performance, the front camera of the "Galaxy J2 Pro (2018) 16GB" has a much higher pixel count compared to the "Cat S31 (2017) 16GB", with a roughly 3MP difference. As a result, the "Galaxy J2 Pro (2018) 16GB" is more suited than the "Cat S31 (2017) 16GB" 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 "Galaxy J2 Pro (2018) 16GB" over the "Cat S31 (2017) 16GB".

ScoreFront-camera resolution
Galaxy J2 Pro (2018) 16GB50/1005.0MP
Cat S31 (2017) 16GB15/1002.0MP

"Galaxy J2 Pro (2018) 16GB" and "Cat S31 (2017) 16GB", performance comparison by specification sheet

Galaxy J2 Pro (2018) 16GBCat S31 (2017) 16GB
ImageGalaxy J2 Pro (2018) 16GBCat S31 (2017) 16GB
MakerSamsungCat
Release date2018-012017-10
ColorBlack/Gold/Blue/PinkBlack
OSAndroidAndroid
Dimensions (width x height x thickness)72.3mm x 143.8mm x 8.4mm74.4mm x 146.0mm x 12.6mm
Weight153.0g200.0g
Display size5.0inch4.7inch
Display typeSuper AMOLEDTFT
Screen resolution (width x height)540 x 960720 x 1280
Pixel density220ppi312ppi
Battery capacity2600.0mAh4000.0mAh
ChipsetQualcomm MSM8917 Snapdragon 425Qualcomm MSM8909 Snapdragon 210
CPU specs1.4GHz×4(4.0-cores)1.3GHz×4(4.0-cores)
RAM size2.0GB2.0GB
Storage size16.0GB16.0GB
Rear-camera resolution8.0MP8.0MP
Front-camera resolution5.0MP2.0MP

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