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Which should you buy, the Galaxy S6 edge (USA) 128GB or Oppo A31 (2015) 8GB? We offer a thorough comparison of the differences in functions, specifications and performance between the two

Created date: 2018-09-30 22:42:38, Updated date: 2020-04-16 22:07:48

Galaxy S6 edge (USA) 128GBOppo A31 (2015) 8GB
Galaxy S6 edge (USA) 128GBOppo A31 (2015) 8GB

Here's our thorough comparison of the difference in performance and function between the "Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB". Which one should you buy? We'll compare and explain what differs between the "Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB" in a way that even people who aren't used to choosing between two similar products can understand.

Galaxy S6 edge (USA) 128GBOppo A31 (2015) 8GB
Galaxy S6 edge (USA) 128GB

Oppo A31 (2015) 8GB

General rating:
Holding comfortrating-image3.7
73/100
rating-image4.0
79/100
Weightrating-image3.9
77/100
rating-image3.8
76/100
Screen sizerating-image3.8
75/100
rating-image3.3
66/100
Display qualityrating-image4.5
89/100
rating-image1.8
35/100
Battery liferating-image3.0
59/100
rating-image2.5
50/100
Processing powerrating-image3.7
74/100
rating-image1
14/100
Memory capacityrating-image3.0
60/100
rating-image1.0
20/100
Storage capacityrating-image4.5
90/100
rating-image1.2
24/100
Rear camera performancerating-image3.4
68/100
rating-image2.5
50/100
Front camera performancerating-image2.5
50/100
rating-image2.5
50/100

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", performance comparison

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB" 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 S6 edge (USA) 128GB" has a width of 70.1mm, a length of 142.0mm, and a thickness of 7.1mm. Also, the "Oppo A31 (2015) 8GB" has a width of 65.5mm, a length of 131.9mm, and a thickness of 8.0mm.

Comparing the width and thickness of the body, the "Oppo A31 (2015) 8GB" is smaller and more compact compared to the "Galaxy S6 edge (USA) 128GB". For that reason, the "Oppo A31 (2015) 8GB" is easier to grip firmly and carry one-handed than the "Galaxy S6 edge (USA) 128GB". For that reason, we recommend the "Oppo A31 (2015) 8GB".

Comparing the width and thickness of the body, the "Oppo A31 (2015) 8GB" is considerably smaller and more compact than the "Galaxy S6 edge (USA) 128GB". The "Oppo A31 (2015) 8GB" excels over the "Galaxy S6 edge (USA) 128GB" 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 "Oppo A31 (2015) 8GB" over the "Galaxy S6 edge (USA) 128GB".

Comparing the overall size of the two devices, the "Oppo A31 (2015) 8GB" has a large size compared to the "Galaxy S6 edge (USA) 128GB". For that reason the "Oppo A31 (2015) 8GB" is a size that is easier to use in one hand and comfortably carry than the "Galaxy S6 edge (USA) 128GB". That's why we recommend the "Oppo A31 (2015) 8GB".

ScoreDimensions (width x height x thickness)
Galaxy S6 edge (USA) 128GB73/10070.1mm x 142.0mm x 7.1mm
Oppo A31 (2015) 8GB79/10065.5mm x 131.9mm x 8.0mm

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" is about 132.0g, and the weight of the "Oppo A31 (2015) 8GB" is about 135.0g. Comparing the weight of the two devices, there isn't much difference in weight between the "Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB". That's why the likelihood of fatigue in the fingers and wrists after extended use 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.

ScoreWeight
Galaxy S6 edge (USA) 128GB77/100132.0g
Oppo A31 (2015) 8GB76/100135.0g

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" has a 5.1inch display. Also, the "Oppo A31 (2015) 8GB" has a 4.5inch display. Comparing the screen size, the "Galaxy S6 edge (USA) 128GB" has a larger screen compared to the "Oppo A31 (2015) 8GB", with a roughly 0.5inch difference. As a result, the user is less likely to mistap when using apps on the "Galaxy S6 edge (USA) 128GB" than on the "Oppo A31 (2015) 8GB", and is also able to enjoy videos and games on a larger screen. Therefore, we recommend the "Galaxy S6 edge (USA) 128GB".

ScoreDisplay size
Galaxy S6 edge (USA) 128GB75/1005.1inch
Oppo A31 (2015) 8GB66/1004.5inch

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" is 1440 x 2560, and pixel density is 575ppi. Also, the resolution on the "Oppo A31 (2015) 8GB" is 480 x 854, and pixel density is 217ppi. Comparing the pixel count, the "Galaxy S6 edge (USA) 128GB" has much higher pixel density than the "Oppo A31 (2015) 8GB", with a difference of roughly 358ppi. In terms of having better picture quality and exerting less strain on the eyes, the "Galaxy S6 edge (USA) 128GB" is superior to the "Oppo A31 (2015) 8GB". If you are looking for a smartphone that is easy on the eyes, displaying texts and pictures clearly without any blurring, we recommend the "Galaxy S6 edge (USA) 128GB" over the "Oppo A31 (2015) 8GB".

ScorePixel density
Galaxy S6 edge (USA) 128GB89/100575ppi
Oppo A31 (2015) 8GB35/100217ppi

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" is 2600.0mAh, and the "Oppo A31 (2015) 8GB" is 2000.0mAh. Regarding battery capacity, the "Galaxy S6 edge (USA) 128GB" has greater battery capacity than the "Oppo A31 (2015) 8GB", with a 600mAh difference. If battery is a priority, then the "Galaxy S6 edge (USA) 128GB" is recommended over the "Oppo A31 (2015) 8GB".

ScoreBattery capacity
Galaxy S6 edge (USA) 128GB59/1002600.0mAh
Oppo A31 (2015) 8GB50/1002000.0mAh

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB"'s CPU is a Exynos 7420 Octa, with performance measured at 2.1GHz+1.5GHz×8(8.0-cores). Also, the "Oppo A31 (2015) 8GB"'s CPU is a Qualcomm MSM8916 Snapdragon 410, with performance measured at 1.2GHz×4(4.0-cores). Comparing CPU performance, the "Galaxy S6 edge (USA) 128GB" has considerably higher specs than the "Oppo A31 (2015) 8GB". In terms of being able to comfortably play games and run apps smoothly, the "Galaxy S6 edge (USA) 128GB" is superior to the "Oppo A31 (2015) 8GB". If you're going for a high spec smart phone that runs smoothly and comfortably handles games, we recommend purchasing the "Galaxy S6 edge (USA) 128GB" over the "Oppo A31 (2015) 8GB".

ScoreCPU specs
Galaxy S6 edge (USA) 128GB74/1002.1GHz+1.5GHz×8(8.0-cores)
Oppo A31 (2015) 8GB14/1001.2GHz×4(4.0-cores)

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" is 3.0GB and the weight of the "Oppo A31 (2015) 8GB" is 1.0GB. Comparing the devices in terms of RAM, the "Galaxy S6 edge (USA) 128GB" has a significantly larger amount of RAM than the "Oppo A31 (2015) 8GB", with a difference of about 2GB. In terms of the unlikeliness of crashing and the ease of multitasking, 3D games and VR, the "Galaxy S6 edge (USA) 128GB" is superior to the "Oppo A31 (2015) 8GB". If you're looking for a smart phone that can run multiple apps simultaneously with stability and also allows you to comfortably enjoy 3D games and VR, then we recommend purchasing the "Galaxy S6 edge (USA) 128GB" over the "Oppo A31 (2015) 8GB".

ScoreRAM size
Galaxy S6 edge (USA) 128GB60/1003.0GB
Oppo A31 (2015) 8GB20/1001.0GB

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" is 128.0GB. Also the "Oppo A31 (2015) 8GB" is 8.0GB. Regarding storage capacity, the "Galaxy S6 edge (USA) 128GB" has a much larger data storage capacity compared to the "Oppo A31 (2015) 8GB", with a roughly 120GB difference. In terms of the number of pictures you can save and the applications that you can install, the "Galaxy S6 edge (USA) 128GB" is superior to the "Oppo A31 (2015) 8GB". If you are looking for a smartphone that can save more data, we recommend the "Galaxy S6 edge (USA) 128GB" over the "Oppo A31 (2015) 8GB".

ScoreStorage size
Galaxy S6 edge (USA) 128GB90/100128.0GB
Oppo A31 (2015) 8GB24/1008.0GB

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB" 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 S6 edge (USA) 128GB" has a 16.0MP main camera. Also, "Oppo A31 (2015) 8GB" has a 8.0MP main camera. Comparing rear camera performance, the "Galaxy S6 edge (USA) 128GB" has a much higher pixel count compared to the "Oppo A31 (2015) 8GB", with a roughly 8MP difference. In terms of taking or shooting high resolution pictures or videos that will look clean when printed, the "Galaxy S6 edge (USA) 128GB" is superior to the "Oppo A31 (2015) 8GB". If you are looking for a smartphone that is suited for shooting videos and taking pictures, we recommend the "Galaxy S6 edge (USA) 128GB" over the "Oppo A31 (2015) 8GB".

ScoreRear-camera resolution
Galaxy S6 edge (USA) 128GB68/10016.0MP
Oppo A31 (2015) 8GB50/1008.0MP

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", 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 S6 edge (USA) 128GB" has an 5.0MP front camera and "Oppo A31 (2015) 8GB" has an 5.0MP front camera. Comparing rear camera performance, the "Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB" 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.

ScoreFront-camera resolution
Galaxy S6 edge (USA) 128GB50/1005.0MP
Oppo A31 (2015) 8GB50/1005.0MP

"Galaxy S6 edge (USA) 128GB" and "Oppo A31 (2015) 8GB", performance comparison by specification sheet

Galaxy S6 edge (USA) 128GBOppo A31 (2015) 8GB
ImageGalaxy S6 edge (USA) 128GBOppo A31 (2015) 8GB
MakerSamsungOppo
Release date2015-042015-04-17
ColorWhite Pearl/Black Sapphire/Gold PlatinumWhite/Blue
OSAndroidAndroid
Dimensions (width x height x thickness)70.1mm x 142.0mm x 7.1mm65.5mm x 131.9mm x 8.0mm
Weight132.0g135.0g
Display size5.1inch4.5inch
Display typeSuper AMOLEDIPS LCD
Screen resolution (width x height)1440 x 2560480 x 854
Pixel density575ppi217ppi
Battery capacity2600.0mAh2000.0mAh
ChipsetExynos 7420 OctaQualcomm MSM8916 Snapdragon 410
CPU specs2.1GHz+1.5GHz×8(8.0-cores)1.2GHz×4(4.0-cores)
RAM size3.0GB1.0GB
Storage size128.0GB8.0GB
Rear-camera resolution16.0MP8.0MP
Front-camera resolution5.0MP5.0MP

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