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Which one is better, the Xiaomi Mi 9 SE 128GB or Oppo K3 (2019) 256GB? We did a deep-dive comparison categorised by purpose of use!

Created date: 2019-05-24 06:11:50, Updated date: 2020-04-16 22:25:39

Oppo K3 (2019) 256GBXiaomi Mi 9 SE 128GB
Oppo K3 (2019) 256GBXiaomi Mi 9 SE 128GB

How are the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB" different? We have tested and evaluated their differences. We also explain which one may be best for you.

Oppo K3 (2019) 256GBXiaomi Mi 9 SE 128GB
Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

General rating:

74.7/100

(The 3288th of all smartphones)

76.3/100

(The 3183th of all smartphones)

Grip
49/100
63/100
Screen quality
80/100
80/100
Performance
98/100
96/100
Storage size
90/100
90/100
Battery
100/100
94/100
Rear-camera resolution
80/100
100/100
Front-camera resolution
100/100
100/100

What is the difference between the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB"? See a detailed comparison of ease of use and performance

Comparison of weight and size of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB"

The design of Oppo K3 (2019) 256GB

The "Oppo K3 (2019) 256GB" is 161.2mm long, 76.0mm wide, and 9.4mm thick. It weighs 191.0g.

The design of Xiaomi Mi 9 SE 128GB

The "Xiaomi Mi 9 SE 128GB" is 147.5mm long, 70.5mm wide, and 7.5mm thick. It weighs 155.0g.

Which is the better design to use?

In comparison, the size difference is 13.6mm in length, 5.5mm in width, and 1.9mm in thickness. Those who are looking for a phone they can use one-handedly will find the "Xiaomi Mi 9 SE 128GB" easier to use and carry around. Flick typing is easier on the "Xiaomi Mi 9 SE 128GB", making it relatively more user-friendly. Also, "Xiaomi Mi 9 SE 128GB" is more compact than "Oppo K3 (2019) 256GB" and less bulky for the user to carry around.

The difference in weight is 36g. The "Xiaomi Mi 9 SE 128GB" is much lighter, putting less burden on the hand.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

Ease of holding it in one hand59/10071/100
How much it does not feel heavy to hold in one hand25/10049/100
Ease of carrying around57/10064/100

Compare the display of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB"

Display of the Oppo K3 (2019) 256GB

The "Oppo K3 (2019) 256GB" uses a AMOLED liquid crystal. The resolution is 1080 x 2340, and the pixel density is 396ppi. The "Oppo K3 (2019) 256GB" has a 6.5inch screen size.

Display of the Xiaomi Mi 9 SE 128GB

The "Xiaomi Mi 9 SE 128GB" uses a Super AMOLED liquid crystal. The resolution is 1080 x 2340, and the pixel density is 431ppi. The "Xiaomi Mi 9 SE 128GB" has a 5.97inch screen size.

Which has a better screen?

This makes a 0.53inch difference in the display sizes. When you actually look at the screen, "Oppo K3 (2019) 256GB" feels like it has a slightly bigger display. For doing internet research using systems such as SNS, there is not much difference between the two phones. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose. If you compare how well the different phones support mobile games, the display size of "Oppo K3 (2019) 256GB" makes it more suited for playing games. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

There is very little difference in the clarity of the displays of "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB" when used for research, gaming, or other similar purposes. When using the smartphone as a VR, the screen is generally held much closer to the face than when using the smartphone for other purposes, and so the clarity of the screen becomes a rather important factor. The "Xiaomi Mi 9 SE 128GB" also offers a crisp, cleaner display when using a VR headset than the "Oppo K3 (2019) 256GB". The "Xiaomi Mi 9 SE 128GB" has the necessary specs for this kind of purpose.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

How suited is the screen for usual usage?80/10075/100
How suited is the screen to play games on?84/10078/100

Compare the camera performances of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB"

Camera performance of Oppo K3 (2019) 256GB

The main camera of the "Oppo K3 (2019) 256GB" has 16.0MP. The front camera has 16.0MP.

Camera performance of Xiaomi Mi 9 SE 128GB

The main camera of the "Xiaomi Mi 9 SE 128GB" has 48.0MP. The front camera has 20.0MP.

Which camera performance is better?

The back cameras thus have a 32MP difference in comparison. The "Xiaomi Mi 9 SE 128GB" also functions better for long-shot photos for the perfect group photo or a picturesque shot of a beautiful location. Also, when using the rear camera to snap close shots of photogenic sweets or meals, there is very little difference between the pixel counts of the two phones. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

There is a 4MP difference in front camera pixel number. When shooting objects or people with the front phone camera from a short distance, such as taking a selfie with a selfie-stick, there is very little difference between the pixel counts of the two phones, even when it comes to the scenery in the background of such photographs. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose. There is not much difference between the pixel counts of "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB" when it comes to taking close-up photographs such as selfies or profile pics with the front phone camera.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

Is is suited to taking far away objects with the rear camera?80/100100/100
Is it suited for taking close objects with the built-in camera?100/100100/100

Comparison of the processing capabilities of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB"

The processing capability of the Oppo K3 (2019) 256GB

Performance is defined by the chipset, and the "Oppo K3 (2019) 256GB" uses the Qualcomm SDM710 Snapdragon 710 SoC. The CPU performance is 2.2GHz+1.7GHz×8(8.0-cores). The memory capacity is 8.0GB.

The processing capability of the Xiaomi Mi 9 SE 128GB

Performance is defined by the chipset, and the "Xiaomi Mi 9 SE 128GB" uses the Qualcomm SDM712 Snapdragon 712 SoC. The CPU performance is 2.3GHz+1.7GHz×8(8.0-cores). The memory capacity is 6.0GB.

Which has the better processing capability?

The CPU specs are the same for both phones. This is a 2GB difference in memory capacity. The memory of "Oppo K3 (2019) 256GB" is slightly larger, so "Oppo K3 (2019) 256GB" is recommended over "Xiaomi Mi 9 SE 128GB" for multitasking.

For phone calls, emails, messaging, using SNS or most fundamental features, the differences between the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" are not large at all. For people who mainly use their phones to look things up online, watch videos and play games occasionally I can recommend the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" equally. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

There is basically no difference between "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB" when playing 2D games or basic 3D games. Functionality is about the same for full-scale 3D games, no matter which phone model is used. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

Review on the CPU capbility and memory capacity when using Social Networks or the Internet100/10099/100
Review on the CPU speed and the memory capacity while playing 3D games97/10094/100

Comparison of the battery life of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB"

Battery performance of Oppo K3 (2019) 256GB

The "Oppo K3 (2019) 256GB" has a battery capacity of 3765.0mAh.

Battery performance of Xiaomi Mi 9 SE 128GB

The "Xiaomi Mi 9 SE 128GB" has a battery capacity of 3070.0mAh.

Which battery perfomances is better?

This makes a difference in battery capacity of 695mAh, but it is not enough to only compare the capacity. With a high-performance CPU, the battery drains faster, and a larger screen also uses more battery.

The "Oppo K3 (2019) 256GB" is also a great choice for those who only use their phone for occasional phone calls or for checking the time. For average daily use, for example looking things up online, SNS, gaming or occasionally checking your screen I can recommend the "Oppo K3 (2019) 256GB" slightly more. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

The battery life of the "Oppo K3 (2019) 256GB" is well equipped to handle long hours of gaming, video playback, and other kinds of frequent daily use. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

Review on the battery life of a phone mainly using Social Networks and the Internet100/10094/100
Review on the battery life of a phone mainly using mainly games and videos98/10085/100

Compare the storage capacity of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB"

The storage capacity of the Oppo K3 (2019) 256GB

The "Oppo K3 (2019) 256GB" has 256.0GB of internal memory. It is also compatible with SD cards, so when there is insufficient storage space, then a SD card can be used to add more storage.

The storage capacity of the Xiaomi Mi 9 SE 128GB

The "Xiaomi Mi 9 SE 128GB" has 128.0GB of internal memory.

Which has the easier storage to use?

The difference in internal memory is about 128GB. If you are only downloading a few games and apps (such as SNS) to use on your phone, it really doesn't matter if you choose "Oppo K3 (2019) 256GB" or "Xiaomi Mi 9 SE 128GB". If you are hoping to install many different games on their phone, the amount of storage is the same no matter which of these two devices you choose to buy. Both the "Oppo K3 (2019) 256GB" and the "Xiaomi Mi 9 SE 128GB" can be easily used for this kind of purpose.

Because the speed of loading from or saving to the SD card is slow, it is suited for saving pictures or videos.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

Review on the storage capacity when playing many games90/10090/100
Review on when you store many pictures and videos95/100 -

Which to buy, the "Oppo K3 (2019) 256GB" or "Xiaomi Mi 9 SE 128GB"

At the end of the day which is better, the "Oppo K3 (2019) 256GB" or "Xiaomi Mi 9 SE 128GB"?

If you're looking for something that's easy to hold, the compact "Xiaomi Mi 9 SE 128GB" is a great choice. If choosing based on screen size, there is hardly any difference between "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB". There isn't much difference between "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB" in terms of performance or specifications. Because both have advantages and disadvantages, I think that it is best to stick to the most important points that you want to emphasize.

Oppo K3 (2019) 256GB

Xiaomi Mi 9 SE 128GB

Handling49/10063/100
Display80/10080/100
CPU specs98/10096/100
General rating84/10084/100

Is it recommended to buy the Oppo K3 (2019) 256GB, compared with other smartphones?

Compared to other smartphones, the "Oppo K3 (2019) 256GB" is averagely easy to hold. Although it can be a little difficult, it is the right size to be able to operate with one hand. The screen size is larger than that of standard smartphones. It is suited for typing long texts and so can be used to read or edit office texts. In addition, its processing capability is quite excellent compared to the average smart phone. It is suitable for almost all uses, including games and VR. It may be a bit extravagant for normal use. Looking at the overall specifications, the "Oppo K3 (2019) 256GB" is a high-end smart phone.

Is it recommended to buy the Xiaomi Mi 9 SE 128GB, compared with other smartphones?

Compared to other smart phones, the "Xiaomi Mi 9 SE 128GB" has a size that is easy to hold, and looks compact. It can be easily operated with one hand. The screen size is larger than that of standard smartphones. It is suited for typing long texts and so can be used to read or edit office texts. In addition, its processing capability is quite excellent compared to the average smart phone. It is suitable for almost all uses, including games and VR. It may be a bit extravagant for normal use. Looking at the overall specifications, the "Xiaomi Mi 9 SE 128GB" is a high-end smart phone.

What are the spec differences between the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB" ?

A summary of the technical specifications of the "Oppo K3 (2019) 256GB" and "Xiaomi Mi 9 SE 128GB". Functions and performance variations on the same model will be highlighted in red.

Oppo K3 (2019) 256GBXiaomi Mi 9 SE 128GB
Oppo K3 (2019) 256GBXiaomi Mi 9 SE 128GB
ColorBlack/Nebula Purple/Morning WhiteViolet/Blue/Gray
OSAndroidAndroid
Dimensions (width x height x thickness)76.0mm x 161.2mm x 9.4mm70.5mm x 147.5mm x 7.5mm
Weight191.0g155.0g
Display size6.5inch5.97inch
Display typeAMOLEDSuper AMOLED
Screen resolution (width x height)1080 x 23401080 x 2340
Pixel density396ppi431ppi
Battery capacity3765.0mAh3070.0mAh
ChipsetQualcomm SDM710 Snapdragon 710Qualcomm SDM712 Snapdragon 712
CPU specs2.2GHz+1.7GHz×8(8.0-cores)2.3GHz+1.7GHz×8(8.0-cores)
RAM size8.0GB6.0GB
Storage size256.0GB128.0GB
Rear-camera resolution16.0MP48.0MP
Front-camera resolution16.0MP20.0MP

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