Should you buy Oppo A91 (2019) 128GB or Xiaomi Redmi K20 Pro Premium 512GB? Compare the differences in functions and specifications/performances thoroughly
Created date: 2019-12-19 17:01:30, Updated date: 2021-10-20 13:27:20
How did the evaluations between the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB" 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!
Contents
- 1.Compare Performance and Usability
- 1-0.Which one is easier to hold, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"? Compare weight
- 1-2.Size comparison of "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB". Which one would you choose?
- 1-3.Compare the rear cameras of "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB". Which one has better picture quality?
- 1-4.Which has a front camera with better picture quality, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
- 1-5.Which one has a better display, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
- 1-6.Which is better in terms of display, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
- 1-7.Which has a better storage capacity, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
- 1-8.How is "Oppo A91 (2019) 128GB" different from "Xiaomi Redmi K20 Pro Premium 512GB" in terms of memory capacity?
- 1-9.Which is better in terms of CPU function, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
- 1-10.How is the battery duration of "Oppo A91 (2019) 128GB" different from that of "Xiaomi Redmi K20 Pro Premium 512GB" ? See the differences
- 2.Compare Performance Specs
Compare Performance and Usability
Size comparison of "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB". Which one would you choose?
Your device's size has a huge influence on how easy it is to hold or to operate with one hand. The smaller your device's width, the easier it will be to hold, but you'll also need to take device thickness into account. And when the length and width are both smaller, you'll find that it's much easier for you to operate it one-handed, since your fingers will find it much easier to reach where you want them to. On the other hand, longer lengths and wider widths might lead to devices that are hard to carry in your pocket, bulky even when you keep them in your bag, and all around less portable.
The "Oppo A91 (2019) 128GB" is 73.3mm wide, 160.2mm tall, and 7.9mm thick. The "Xiaomi Redmi K20 Pro Premium 512GB" is 74.3mm tall, 156.7mm wide, and 8.8mm thick.
There is no real difference between the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB" when comparing their width, thickness, and slimness; they are both around the same in terms of one-handed ease of use and carry. Because of this, it is better to compare them based on other aspects of performance and function.
There is no real difference in length or width between the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB", so they are both about the same in terms of usability, ease of carry, and bulkiness. Because of this, it is better to compare them based on other aspects of performance and function.
When comparing their sizes as a whole, there is no real difference between the "Oppo A91 (2019) 128GB"and "Xiaomi Redmi K20 Pro Premium 512GB". Thus they are roughly the same in terms of ease of carry and one-handed use. Because of this, it is better to compare them based on other aspects of performance and function.
Score | Dimensions (width x height x thickness) | |
---|---|---|
Oppo A91 (2019) 128GB | 65/100 | 73.3mm x 160.2mm x 7.9mm |
Xiaomi Redmi K20 Pro Premium 512GB | 62/100 | 74.3mm x 156.7mm x 8.8mm |
Which one is easier to hold, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"? Compare weight
The device weight will effect how quickly you tire from holding it, and how much stress is put on your wrist. The lighter it is, the longer you can hold it without feeling tired. Also, less stress on your wrist will make using it easier and more pleasant. Unless the weight is right for you, it might put too much strain on your body and make using it more stressful.
The "Oppo A91 (2019) 128GB" weighs 172.0g. The "Xiaomi Redmi K20 Pro Premium 512GB" clocks in at 191.0g. Comparing the weight of the main unit, the "Oppo A91 (2019) 128GB" is a lighter phone than the "Xiaomi Redmi K20 Pro Premium 512GB", with a difference of approximately 19g. Therefore, there is less strain on your fingers and wrists even when you use your phone for a long time on the "Oppo A91 (2019) 128GB" compared to the "Xiaomi Redmi K20 Pro Premium 512GB". For this reason, the "Oppo A91 (2019) 128GB" is recommended.
Score | Weight | |
---|---|---|
Oppo A91 (2019) 128GB | 61/100 | 172.0g |
Xiaomi Redmi K20 Pro Premium 512GB | 54/100 | 191.0g |
Which is better in terms of display, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
Screen size influences how well you can control your device, as well as how clear the display is. With a large screen, the text and buttons in apps will display large enough so you'll be less likely to accidentally tap the button next to the one you were aiming for. Plus, you'll be able to enjoy more high-impact visuals for games and movies.
The screen size on the "Oppo A91 (2019) 128GB" is 6.4inch, and 6.39inch on the "Xiaomi Redmi K20 Pro Premium 512GB". The screens of the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB" are roughly the same size, and so the ease of pressing app buttons are the same on both devices. Because of this, it is better to compare them based on other aspects of performance and function.
Score | Display size | |
---|---|---|
Oppo A91 (2019) 128GB | 90/100 | 6.4inch |
Xiaomi Redmi K20 Pro Premium 512GB | 90/100 | 6.39inch |
Which one has a better display, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
Pixel density influences how nice your device's screen looks, with high pixel densities making screens look more beautiful, and letting you get more out of your games and movies. Plus, the nicer you screen looks, the less strain you'll be putting on your eyes, so you'll tend to be able to use your device for longer before your eyes get tired.
The screen on the "Oppo A91 (2019) 128GB" has a 1080 x 2400 resolution and a pixel density of 411ppi. The "Xiaomi Redmi K20 Pro Premium 512GB", on the other hand, has a screen resolution of 1080 x 2340 and a pixel density of 403ppi. There is not much of a difference in the pixel resolutions of the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB", so they are about the same in terms of clarity of image and gentleness on the eyes. For this reason it is better to compare them based on other aspects of performance and function.
Score | Pixel density | |
---|---|---|
Oppo A91 (2019) 128GB | 85/100 | 411ppi |
Xiaomi Redmi K20 Pro Premium 512GB | 84/100 | 403ppi |
How is the battery duration of "Oppo A91 (2019) 128GB" different from that of "Xiaomi Redmi K20 Pro Premium 512GB" ? See the differences
Battery performance has a big effect on the battery life of your device. However, a high battery capacity doesn't necessarily mean a long battery life. Rather, the rate of power consumption needs to be taken into consideration as well. The larger the screen and the higher the CPU performance, the higher the rate of power consumption on your battery.
The "Oppo A91 (2019) 128GB" has a battery capacity of 4025.0mAh, while the "Xiaomi Redmi K20 Pro Premium 512GB" has a 4000.0mAh battery. The batteries of both the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB" perform to the same extent. There is also no difference in the battery capacities of the "Oppo A91 (2019) 128GB" and the "Xiaomi Redmi K20 Pro Premium 512GB". Since their battery life is practically identical, it would be better to compare them based on other aspects of performance and function.
Score | Battery capacity | |
---|---|---|
Oppo A91 (2019) 128GB | 80/100 | 4025.0mAh |
Xiaomi Redmi K20 Pro Premium 512GB | 80/100 | 4000.0mAh |
Which is better in terms of CPU function, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
Your CPU's speed will influence the processing power of the applications you run, and together with the number of cores in the CPU, as well as its clock frequency, will determine the processing power available for apps. The higher these performance factors, the smoother your games and apps will run. Conversely, if these factors are too low, your apps and games will be sluggish and struggle to run.
The "Oppo A91 (2019) 128GB" is equipped with a Mediatek MT6771V Helio P70 processor, and its performance speed is 2.1GHz+2.0GHz×8(8.0-cores). The "Xiaomi Redmi K20 Pro Premium 512GB" uses an Qualcomm SM8150 Snapdragon 855+ CPU that performs at a speed of 2.96GHz+2.42GHz+1.8GHz×8(8.0-cores). Comparing their CPU performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has higher specs than the "Oppo A91 (2019) 128GB". For this reason, applications run better on the "Xiaomi Redmi K20 Pro Premium 512GB" compared to the "Oppo A91 (2019) 128GB", and games run very smoothly. Therefore, the "Xiaomi Redmi K20 Pro Premium 512GB" is recommended.
Score | CPU specs | |
---|---|---|
Oppo A91 (2019) 128GB | 92/100 | 2.1GHz+2.0GHz×8(8.0-cores) |
Xiaomi Redmi K20 Pro Premium 512GB | 98/100 | 2.96GHz+2.42GHz+1.8GHz×8(8.0-cores) |
How is "Oppo A91 (2019) 128GB" different from "Xiaomi Redmi K20 Pro Premium 512GB" in terms of memory capacity?
Your device's multimedia performance and app stability are both influenced by the amount of memory it has available. The more memory, the more apps you can use simultaneously, while keeping everything stable and smooth. Plus, there'll be less chance of animations lagging or apps crashing. You also need to keep in mind that some games won't run at all if there's not enough memory available.
The "Oppo A91 (2019) 128GB" has 8.0GB of memory. The "Xiaomi Redmi K20 Pro Premium 512GB", on the other hand, has 12.0GB. Comparing the memory performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has a larger memory capacity than the "Oppo A91 (2019) 128GB", with a difference of approximately 4GB. For this reason, multitasking is smoother on the "Xiaomi Redmi K20 Pro Premium 512GB" than the "Oppo A91 (2019) 128GB", and applications are less likely to crash. Also, it is more enjoyable to play 3D games and VR on the "Xiaomi Redmi K20 Pro Premium 512GB". For this reason, the "Xiaomi Redmi K20 Pro Premium 512GB" is recommended.
Score | RAM size | |
---|---|---|
Oppo A91 (2019) 128GB | 93/100 | 8.0GB |
Xiaomi Redmi K20 Pro Premium 512GB | 99/100 | 12.0GB |
Which has a better storage capacity, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
Storage capacity determines the amount of data you'll be able to save on your device. The more storage you have, the more photos you can take and the more apps you can install. Plus, if your smartphone is compatible with SD cards, then you can increase the amount of available storage. However, SD cards have a slower writespeed, making them less desirable in terms of performance, and users should be aware that it won't be possible to transfer all kinds of data to the card.
The "Oppo A91 (2019) 128GB" has 128.0GB of storage, while the "Xiaomi Redmi K20 Pro Premium 512GB" has 512.0GB. There is no real difference between the "Oppo A91 (2019) 128GB"and "Xiaomi Redmi K20 Pro Premium 512GB" 's ROMs and storage capacities, so both can store roughly the same amount of photographs and apps. Because of this, it is better to compare them based on other aspects of performance and function.
Score | Storage size | |
---|---|---|
Oppo A91 (2019) 128GB | 90/100 | 128.0GB |
Xiaomi Redmi K20 Pro Premium 512GB | 95/100 | 512.0GB |
Compare the rear cameras of "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB". Which one has better picture quality?
One factor in how well your rear camera (the camera on the back of your device) performs is its megapixel count. With a higher megapixel count, you'll be able to take photos with sharper detail, photos that stay clear and sharp even when printed.
The main camera on the "Oppo A91 (2019) 128GB" has 48.0MP. The "Xiaomi Redmi K20 Pro Premium 512GB" has 48.0MP. The rear facing cameras of the "Oppo A91 (2019) 128GB" and "Xiaomi Redmi K20 Pro Premium 512GB" have roughly the same performance, so the quality of the photograph and video footage they can capture is around the same. Because of this, it is better to compare them based on other aspects of performance and function.
Score | Rear-camera resolution | |
---|---|---|
Oppo A91 (2019) 128GB | 97/100 | 48.0MP |
Xiaomi Redmi K20 Pro Premium 512GB | 97/100 | 48.0MP |
Which has a front camera with better picture quality, "Oppo A91 (2019) 128GB" or "Xiaomi Redmi K20 Pro Premium 512GB"?
One indication of how well your forward facing camera (the camera on the same side as your device's screen) performs is how many megapixels it has. More megapixels means you'll be able to take photos with sharper detail, that still look amazing printed out.
The forward-facing camera on the "Oppo A91 (2019) 128GB" has a resolution of 16.0MP. The "Xiaomi Redmi K20 Pro Premium 512GB"'s has 20.0MP. Comparing the front-facing camera performance, the number of pixels of the front-facing camera on the "Xiaomi Redmi K20 Pro Premium 512GB" is higher than the "Oppo A91 (2019) 128GB", with a difference of approximately 4MP. For this reason, it is possible to take higher quality selfies and make clear prints with the "Xiaomi Redmi K20 Pro Premium 512GB" than the "Oppo A91 (2019) 128GB". Therefore, the "Xiaomi Redmi K20 Pro Premium 512GB" is recommended.
Score | Front-camera resolution | |
---|---|---|
Oppo A91 (2019) 128GB | 75/100 | 16.0MP |
Xiaomi Redmi K20 Pro Premium 512GB | 81/100 | 20.0MP |
Compare Performance Specs
Oppo A91 (2019) 128GB | Xiaomi Redmi K20 Pro Premium 512GB | |
Image | ||
Maker | Oppo | Xiaomi |
Release date | 2019-12-20 | 2019-09 |
Color | Lightening Black/Unicorn White/Blazing Blue/Red | Carbon black/Flame red/Glacier blue/Summer Honey/Pearl White |
OS | Android | Android |
Dimensions (width x height x thickness) | 73.3mm x 160.2mm x 7.9mm | 74.3mm x 156.7mm x 8.8mm |
Weight | 172.0g | 191.0g |
Display size | 6.4inch | 6.39inch |
Display type | AMOLED | Super AMOLED |
Screen resolution (width x height) | 1080 x 2400 | 1080 x 2340 |
Pixel density | 411ppi | 403ppi |
Battery capacity | 4025.0mAh | 4000.0mAh |
Chipset | Mediatek MT6771V Helio P70 | Qualcomm SM8150 Snapdragon 855+ |
CPU specs | 2.1GHz+2.0GHz×8(8.0-cores) | 2.96GHz+2.42GHz+1.8GHz×8(8.0-cores) |
RAM size | 8.0GB | 12.0GB |
Storage size | 128.0GB | 512.0GB |
Rear-camera resolution | 48.0MP | 48.0MP |
Front-camera resolution | 16.0MP | 20.0MP |
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