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Should you buy Oppo A9 (2020) 128GB or Oppo K1 (2018) 64GB? Compare the differences in functions and specifications/performances thoroughly

Created date: 2019-09-11 03:28:24, Updated date: 2021-10-20 22:02:49

Oppo A9 (2020) 128GBOppo K1 (2018) 64GB
Oppo A9 (2020) 128GBOppo K1 (2018) 64GB

Are you having trouble comparing the differences in features and performance of the "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB", or unsure about their differences in ease-of-use, and wondering which to buy? We did a deep-dive comparison of the features, specs, and capabilities of these two smartphone, and provided our rating of which one was a better buy.

Oppo A9 (2020) 128GBOppo K1 (2018) 64GB
Oppo A9 (2020) 128GB

Oppo K1 (2018) 64GB

General rating:
Portabilityrating-image3.0
75.6mm x 163.6mm x 9.1mm
rating-image3.1
75.5mm x 158.3mm x 7.4mm
Weightrating-image2.6
195.0g
rating-image3.4
156.0g
Size of screenrating-image4.5
6.5inch
rating-image4.5
6.4inch
Screen clarityrating-image2.7
269ppi
rating-image4.2
402ppi
Battery durationrating-image4.2
5000.0mAh
rating-image3.7
3600.0mAh
Processing capabilityrating-image4.6
2.0GHz+1.8GHz×8(8.0-cores)
rating-image4.5
2.0GHz+1.8GHz×8(8.0-cores)
Memory capacityrating-image4.7
8.0GB
rating-image4.5
6.0GB
Storage capacityrating-image4.5
128.0GB
rating-image3.4
64.0GB
Rear camera functionrating-image4.9
48.0MP
rating-image3.4
16.0MP
Front camera functionrating-image3.8
16.0MP
rating-image4.4
25.0MP

Compare Performance and Usability

Size comparison of "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB". 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 A9 (2020) 128GB" is 75.6mm wide, 163.6mm tall, and 9.1mm thick. The "Oppo K1 (2018) 64GB" is 75.5mm tall, 158.3mm wide, and 7.4mm thick.

There is no real difference between the "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB" 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 A9 (2020) 128GB" and "Oppo K1 (2018) 64GB", 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 A9 (2020) 128GB"and "Oppo K1 (2018) 64GB". 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.

ScoreDimensions (width x height x thickness)
Oppo A9 (2020) 128GB59/10075.6mm x 163.6mm x 9.1mm
Oppo K1 (2018) 64GB62/10075.5mm x 158.3mm x 7.4mm

Which one is easier to hold, "Oppo A9 (2020) 128GB" or "Oppo K1 (2018) 64GB"? 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 A9 (2020) 128GB" weighs 195.0g. The "Oppo K1 (2018) 64GB" clocks in at 156.0g. If you compare the weight of the two, the "Oppo K1 (2018) 64GB" is a considerably lighter smartphone than the "Oppo A9 (2020) 128GB", with a difference of about 39g. Because of this, the "Oppo K1 (2018) 64GB" puts less of a burden on the fingers and wrists than the "Oppo A9 (2020) 128GB". If you want a smartphone that won't tire your hands out even when using it for a long time, we recommend that you buy the "Oppo K1 (2018) 64GB" rather than the "Oppo A9 (2020) 128GB".

ScoreWeight
Oppo A9 (2020) 128GB52/100195.0g
Oppo K1 (2018) 64GB67/100156.0g

Which is better in terms of display, "Oppo A9 (2020) 128GB" or "Oppo K1 (2018) 64GB"?

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 A9 (2020) 128GB" is 6.5inch, and 6.4inch on the "Oppo K1 (2018) 64GB". The screens of the "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB" 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.

ScoreDisplay size
Oppo A9 (2020) 128GB90/1006.5inch
Oppo K1 (2018) 64GB90/1006.4inch

Which one has a better display, "Oppo A9 (2020) 128GB" or "Oppo K1 (2018) 64GB"?

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 A9 (2020) 128GB" has a 720 x 1600 resolution and a pixel density of 269ppi. The "Oppo K1 (2018) 64GB", on the other hand, has a screen resolution of 1080 x 2340 and a pixel density of 402ppi. Comparing the screen definition, the "Oppo K1 (2018) 64GB" has a much higher pixel density than the "Oppo A9 (2020) 128GB", with a difference of about 133ppi. The screen on the "Oppo K1 (2018) 64GB" is clear and crisp, and puts less strain on the eyes than that of the "Oppo A9 (2020) 128GB". If you want to choose a smartphone that is gentle on your eyes with a display that shows text and images clearly, we recommend that you buy the "Oppo K1 (2018) 64GB" rather than the "Oppo A9 (2020) 128GB".

ScorePixel density
Oppo A9 (2020) 128GB54/100269ppi
Oppo K1 (2018) 64GB84/100402ppi

How is the battery duration of "Oppo A9 (2020) 128GB" different from that of "Oppo K1 (2018) 64GB" ? 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 A9 (2020) 128GB" has a battery capacity of 5000.0mAh, while the "Oppo K1 (2018) 64GB" has a 3600.0mAh battery. Regarding the battery performance, the "Oppo A9 (2020) 128GB" has a larger battery capacity than the "Oppo K1 (2018) 64GB", with a difference of 1400mAh. If you are choosing based on the battery, the "Oppo A9 (2020) 128GB" is recommended over the "Oppo K1 (2018) 64GB".

ScoreBattery capacity
Oppo A9 (2020) 128GB83/1005000.0mAh
Oppo K1 (2018) 64GB74/1003600.0mAh

Which is better in terms of CPU function, "Oppo A9 (2020) 128GB" or "Oppo K1 (2018) 64GB"?

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 A9 (2020) 128GB" is equipped with a Qualcomm SDM665 Snapdragon 665 processor, and its performance speed is 2.0GHz+1.8GHz×8(8.0-cores). The "Oppo K1 (2018) 64GB" uses an Qualcomm SDM660 Snapdragon 660 CPU that performs at a speed of 2.0GHz+1.8GHz×8(8.0-cores). There is also no real discrepancy between the CPU performances of the "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB". Because of this, both phones will feel practically identical in terms of smoothness when running apps and ease of game play. This is why it is better to compare them based on other aspects of performance and function.

ScoreCPU specs
Oppo A9 (2020) 128GB91/1002.0GHz+1.8GHz×8(8.0-cores)
Oppo K1 (2018) 64GB89/1002.0GHz+1.8GHz×8(8.0-cores)

How is "Oppo A9 (2020) 128GB" different from "Oppo K1 (2018) 64GB" 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 A9 (2020) 128GB" has 8.0GB of memory. The "Oppo K1 (2018) 64GB", on the other hand, has 6.0GB. Memory performance is roughly the same for both the "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB"; as a result, multitasking, playing 3D games, and using VR feels the same on both devices. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreRAM size
Oppo A9 (2020) 128GB93/1008.0GB
Oppo K1 (2018) 64GB90/1006.0GB

Which has a better storage capacity, "Oppo A9 (2020) 128GB" or "Oppo K1 (2018) 64GB"?

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 A9 (2020) 128GB" has 128.0GB of storage, while the "Oppo K1 (2018) 64GB" has 64.0GB. In terms of ROM and data storage, the "Oppo A9 (2020) 128GB" has a much larger capacity than the "Oppo K1 (2018) 64GB", with a difference of about 64GB. The "Oppo A9 (2020) 128GB" can save more photos and keep more apps installed than the "Oppo K1 (2018) 64GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Oppo A9 (2020) 128GB" rather than the "Oppo K1 (2018) 64GB".

ScoreStorage size
Oppo A9 (2020) 128GB90/100128.0GB
Oppo K1 (2018) 64GB67/10064.0GB

Compare the rear cameras of "Oppo A9 (2020) 128GB" and "Oppo K1 (2018) 64GB". 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 A9 (2020) 128GB" has 48.0MP. The "Oppo K1 (2018) 64GB" has 16.0MP. The rear-facing camera of the "Oppo A9 (2020) 128GB" also has a higher pixel count than the "Oppo K1 (2018) 64GB", with a difference of about 32MP. The "Oppo A9 (2020) 128GB" is more capable than the "Oppo K1 (2018) 64GB" of taking high-definition photos and videos, and produces better results when printing out the photos you have taken. If you want a smartphone that is designed for video and photography, we recommend buying the "Oppo A9 (2020) 128GB" rather than the "Oppo K1 (2018) 64GB".

ScoreRear-camera resolution
Oppo A9 (2020) 128GB97/10048.0MP
Oppo K1 (2018) 64GB68/10016.0MP

Which has a front camera with better picture quality, "Oppo A9 (2020) 128GB" or "Oppo K1 (2018) 64GB"?

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 A9 (2020) 128GB" has a resolution of 16.0MP. The "Oppo K1 (2018) 64GB"'s has 25.0MP. The front-facing camera of the "Oppo K1 (2018) 64GB" has a significantly higher number of pixels than the "Oppo A9 (2020) 128GB", with a difference of about 9MP. Therefore, the "Oppo K1 (2018) 64GB" is more suitable for taking photos and videos than the "Oppo A9 (2020) 128GB". If you want to take and print high-quality selfies, we recommend buying the "Oppo K1 (2018) 64GB" rather than the "Oppo A9 (2020) 128GB".

ScoreFront-camera resolution
Oppo A9 (2020) 128GB75/10016.0MP
Oppo K1 (2018) 64GB88/10025.0MP

Compare Performance Specs

Oppo A9 (2020) 128GBOppo K1 (2018) 64GB
ImageOppo A9 (2020) 128GBOppo K1 (2018) 64GB
MakerOppoOppo
Release date2019-092018-10
ColorMarine Green/Space Purple/Vanilla MintBlue/Red/Silver Green
OSAndroidAndroid
Dimensions (width x height x thickness)75.6mm x 163.6mm x 9.1mm75.5mm x 158.3mm x 7.4mm
Weight195.0g156.0g
Display size6.5inch6.4inch
Display typeIPS LCDSuper AMOLED
Screen resolution (width x height)720 x 16001080 x 2340
Pixel density269ppi402ppi
Battery capacity5000.0mAh3600.0mAh
ChipsetQualcomm SDM665 Snapdragon 665Qualcomm SDM660 Snapdragon 660
CPU specs2.0GHz+1.8GHz×8(8.0-cores)2.0GHz+1.8GHz×8(8.0-cores)
RAM size8.0GB6.0GB
Storage size128.0GB64.0GB
Rear-camera resolution48.0MP16.0MP
Front-camera resolution16.0MP25.0MP

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