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Oppo A15s vs Xiaomi Mi 9: Full Comparison!

Created date: 01/04/2021, 10:21:04, Updated date: 01/04/2021, 13:18:17

Oppo A15sXiaomi Mi 9
Oppo A15sXiaomi Mi 9

Here's our thorough comparison of the difference in performance and function between the Oppo A15s and Xiaomi Mi 9. Which one should you buy? We'll compare and explain what differs between the Oppo A15s and Xiaomi Mi 9 in a way that even people who aren't used to choosing between two similar products can understand.

Oppo A15sXiaomi Mi 9
Oppo A15s

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Xiaomi Mi 9

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General rating:

59.6/100

(The - of all smartphones)

80.7/100

(The 45th of all smartphones)

Holding comfort
62/100
63/100
Weight
59/100
61/100
Screen size
90/100
90/100
Display quality
54/100
84/100
Battery life
- /100
69/100
Processing power
88/100
96/100
Memory capacity
70/100
93/100
Storage capacity
67/100
91/100
Rear camera performance
61/100
97/100
Front camera performance
58/100
81/100

Oppo A15s and Xiaomi Mi 9, performance comparison

Oppo A15s and Xiaomi Mi 9 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 Oppo A15s has a width of 3.0 inches (75.4 mm), a length of 6.5 inches (164 mm), and a thickness of 0.3 inches (7.9 mm). Also, the Xiaomi Mi 9 has a width of 2.9 inches (74.7 mm), a length of 6.2 inches (157.5 mm), and a thickness of 0.3 inches (7.6 mm).

Comparing the width and thickness of the body, there isn't much difference between the Oppo A15s and Xiaomi Mi 9 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 Oppo A15s and the Xiaomi Mi 9. 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 Oppo A15s and the Xiaomi Mi 9. 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)
Oppo A15s62/1003.0 inches (75.4 mm) x 6.5 inches (164 mm) x 0.3 inches (7.9 mm)
Xiaomi Mi 963/1002.9 inches (74.7 mm) x 6.2 inches (157.5 mm) x 0.3 inches (7.6 mm)

Oppo A15s and Xiaomi Mi 9, 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 Oppo A15s is about 177 oz (177 g), and the weight of the Xiaomi Mi 9 is about 173 oz (173 g). Comparing the weight of the two devices, there isn't much difference in weight between the Oppo A15s and Xiaomi Mi 9. 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
Oppo A15s59/100177 oz (177 g)
Xiaomi Mi 961/100173 oz (173 g)

Oppo A15s and Xiaomi Mi 9, 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 Oppo A15s has a 6.52 inch display. Also, the Xiaomi Mi 9 has a 6.39 inch display. Comparing the screen size, there is a negligible difference in screen size between the Oppo A15s and the Xiaomi Mi 9. 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
Oppo A15s90/1006.52 inch
Xiaomi Mi 990/1006.39 inch

Oppo A15s and Xiaomi Mi 9, 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 Oppo A15s is 720 x 1600, and pixel density is 269 ppi. Also, the resolution on the Xiaomi Mi 9 is 1080 x 2340, and pixel density is 403 ppi. Comparing the pixel count, the Xiaomi Mi 9 has much higher pixel density than the Oppo A15s, with a difference of roughly 134 ppi. In terms of having better picture quality and exerting less strain on the eyes, the Xiaomi Mi 9 is superior to the Oppo A15s. If you are looking for a smartphone that is easy on the eyes, displaying texts and pictures clearly without any blurring, we recommend the Xiaomi Mi 9 over the Oppo A15s.

ScorePixel density
Oppo A15s54/100269 ppi
Xiaomi Mi 984/100403 ppi

Oppo A15s and Xiaomi Mi 9, 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
Oppo A15s - /100
Xiaomi Mi 969/1003300 mAh

Oppo A15s and Xiaomi Mi 9, 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 Oppo A15s's CPU is a Mediatek MT6765 Helio P35, with performance measured at 2.35GHz+1.8GHz×8(OctaCore). Also, the Xiaomi Mi 9's CPU is a Qualcomm SM8150 Snapdragon 855, with performance measured at 2.84GHz+2.42GHz+1.78GHz×8(OctaCore). Comparing CPU performance, the Xiaomi Mi 9 has higher specs compared to the Oppo A15s. For that reason, the Xiaomi Mi 9 allows for more comfortable use of apps, and games that run more smoothly. That's why we recommend the Xiaomi Mi 9 over the Oppo A15s.

ScoreCPU specs
Oppo A15s88/1002.35GHz+1.8GHz×8(OctaCore)
Xiaomi Mi 996/1002.84GHz+2.42GHz+1.78GHz×8(OctaCore)

Oppo A15s and Xiaomi Mi 9, 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 Oppo A15s is 4GB and the weight of the Xiaomi Mi 9 is 8GB. Comparing the devices in terms of RAM, the Xiaomi Mi 9 has a significantly larger amount of RAM than the Oppo A15s, with a difference of about 4GB. In terms of the unlikeliness of crashing and the ease of multitasking, 3D games and VR, the Xiaomi Mi 9 is superior to the Oppo A15s. 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 Xiaomi Mi 9 over the Oppo A15s.

ScoreRAM size
Oppo A15s70/1004GB
Xiaomi Mi 993/1008GB

Oppo A15s and Xiaomi Mi 9, 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 Oppo A15s is 64GB. Also the Xiaomi Mi 9 is 256GB. Regarding storage capacity, the Xiaomi Mi 9 has a much larger data storage capacity compared to the Oppo A15s, with a roughly 192GB difference. In terms of the number of pictures you can save and the applications that you can install, the Xiaomi Mi 9 is superior to the Oppo A15s. If you are looking for a smartphone that can save more data, we recommend the Xiaomi Mi 9 over the Oppo A15s.

ScoreStorage size
Oppo A15s67/10064GB
Xiaomi Mi 991/100256GB

Oppo A15s and Xiaomi Mi 9 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.

Oppo A15s has a 13 MP main camera. Also, Xiaomi Mi 9 has a 48 MP main camera. Comparing rear camera performance, the Xiaomi Mi 9 has a much higher pixel count compared to the Oppo A15s, with a roughly 35 MP difference. In terms of taking or shooting high resolution pictures or videos that will look clean when printed, the Xiaomi Mi 9 is superior to the Oppo A15s. If you are looking for a smartphone that is suited for shooting videos and taking pictures, we recommend the Xiaomi Mi 9 over the Oppo A15s.

ScoreRear-camera resolution
Oppo A15s61/10013 MP
Xiaomi Mi 997/10048 MP

Oppo A15s and Xiaomi Mi 9, 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.

Oppo A15s has an 8 MP front camera and Xiaomi Mi 9 has an 20 MP front camera. Comparing rear camera performance, the front camera of the Xiaomi Mi 9 has a much higher pixel count compared to the Oppo A15s, with a roughly 12 MP difference. As a result, the Xiaomi Mi 9 is more suited than the Oppo A15s 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 Xiaomi Mi 9 over the Oppo A15s.

ScoreFront-camera resolution
Oppo A15s58/1008 MP
Xiaomi Mi 981/10020 MP

Oppo A15s and Xiaomi Mi 9, performance comparison by specification sheet

Oppo A15sXiaomi Mi 9
ImageOppo A15sXiaomi Mi 9
MakerOppoXiaomi
Release date12/18, 20203, 2019
ColorDynamic Black/Fancy WhiteLavender Violet/Ocean Blue/Piano Black
OSAndroidAndroid
Dimensions (width x height x thickness)3.0 inches (75.4 mm) x 6.5 inches (164 mm) x 0.3 inches (7.9 mm)2.9 inches (74.7 mm) x 6.2 inches (157.5 mm) x 0.3 inches (7.6 mm)
Weight177 oz (177 g)173 oz (173 g)
Display size6.52 inch6.39 inch
Display typeIPS LCDSuper AMOLED
Screen resolution (width x height)720 x 16001080 x 2340
Pixel density269 ppi403 ppi
ChipsetMediatek MT6765 Helio P35Qualcomm SM8150 Snapdragon 855
CPU specs2.35GHz+1.8GHz×8(OctaCore)2.84GHz+2.42GHz+1.78GHz×8(OctaCore)
RAM size4GB8GB
Storage size64GB256GB
Rear-camera resolution13 MP48 MP
Front-camera resolution8 MP20 MP

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