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Xiaomi Redmi K20 Pro Premium 512GB vs Xperia A4 SO-04G docomo 16GB: Full Comparison!

Created date: 2019-09-20 04:43:26, Updated date: 2020-04-16 15:29:15

Xiaomi Redmi K20 Pro Premium 512GBXperia A4 SO-04G docomo 16GB
Xiaomi Redmi K20 Pro Premium 512GBXperia A4 SO-04G docomo 16GB

Here's our thorough comparison of the difference in performance and function between the "Xiaomi Redmi K20 Pro Premium 512GB" and "Xperia A4 SO-04G docomo 16GB". Which one should you buy? We'll compare and explain what differs between the "Xiaomi Redmi K20 Pro Premium 512GB" and "Xperia A4 SO-04G docomo 16GB" in a way that even people who aren't used to choosing between two similar products can understand.

Xiaomi Redmi K20 Pro Premium 512GBXperia A4 SO-04G docomo 16GB
Xiaomi Redmi K20 Pro Premium 512GB

Xperia A4 SO-04G docomo 16GB

General rating:
Portabilityrating-image3.1
74.3mm x 156.7mm x 8.8mm
rating-image3.8
66.0mm x 128.0mm x 9.1mm
Weightrating-image2.7
191.0g
rating-image3.9
129.0g
Size of screenrating-image4.5
6.39inch
rating-image3.4
4.6inch
Screen clarityrating-image4.2
403ppi
rating-image3.3
319ppi
Battery durationrating-image4.0
4000.0mAh
rating-image3.0
2600.0mAh
Processing capabilityrating-image4.9
2.96GHz+2.42GHz+1.8GHz×8(8.0-cores)
rating-image2.8
2.5GHz×4(4.0-cores)
Memory capacityrating-image5.0
12.0GB
rating-image2.5
2.0GB
Storage capacityrating-image4.8
512.0GB
rating-image2.5
16.0GB
Rear camera functionrating-image4.9
48.0MP
rating-image4.0
20.7MP
Front camera functionrating-image4.1
20.0MP
rating-image1
2.2MP

Compare Performance and Usability

Size comparison of "Xiaomi Redmi K20 Pro Premium 512GB" and "Xperia A4 SO-04G docomo 16GB". 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 "Xiaomi Redmi K20 Pro Premium 512GB" is 74.3mm wide, 156.7mm tall, and 8.8mm thick. The "Xperia A4 SO-04G docomo 16GB" is 66.0mm tall, 128.0mm wide, and 9.1mm thick.

The "Xperia A4 SO-04G docomo 16GB" is also more compact than the "Xiaomi Redmi K20 Pro Premium 512GB" in terms of the thickness of the devices. The "Xperia A4 SO-04G docomo 16GB" is easier than the "Xiaomi Redmi K20 Pro Premium 512GB" to hold with one hand, and you are less likely to accidentally drop it. If you're looking for a smartphone that fits nicely in your hand and can be gripped firmly, we recommend buying the "Xperia A4 SO-04G docomo 16GB" rather than the "Xiaomi Redmi K20 Pro Premium 512GB".

Comparing the width and height of the devices, the "Xperia A4 SO-04G docomo 16GB" is more compact than the "Xiaomi Redmi K20 Pro Premium 512GB". The "Xperia A4 SO-04G docomo 16GB" is easier to carry around than the "Xiaomi Redmi K20 Pro Premium 512GB" and easier to use with one hand. For a smartphone that is comfortable and easy to operate with one hand, and can fit neatly in your pocket or bag, we recommend that you buy the "Xperia A4 SO-04G docomo 16GB" rather than the "Xiaomi Redmi K20 Pro Premium 512GB".

Comparing the overall sizes, the "Xperia A4 SO-04G docomo 16GB" is significantly smaller than the "Xiaomi Redmi K20 Pro Premium 512GB". The "Xperia A4 SO-04G docomo 16GB" is more convenient than the "Xiaomi Redmi K20 Pro Premium 512GB" to use with one hand, and it is less likely to get in your way when not using it. If you prefer a smartphone that is easy to carry around and easy to use with one hand, we recommend that you buy the "Xperia A4 SO-04G docomo 16GB" rather than the "Xiaomi Redmi K20 Pro Premium 512GB".

ScoreDimensions (width x height x thickness)
Xiaomi Redmi K20 Pro Premium 512GB62/10074.3mm x 156.7mm x 8.8mm
Xperia A4 SO-04G docomo 16GB76/10066.0mm x 128.0mm x 9.1mm

Which one is easier to hold, "Xiaomi Redmi K20 Pro Premium 512GB" or "Xperia A4 SO-04G docomo 16GB"? 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 "Xiaomi Redmi K20 Pro Premium 512GB" weighs 191.0g. The "Xperia A4 SO-04G docomo 16GB" clocks in at 129.0g. If you compare the weight of the two, the "Xperia A4 SO-04G docomo 16GB" is a considerably lighter smartphone than the "Xiaomi Redmi K20 Pro Premium 512GB", with a difference of about 62g. Because of this, the "Xperia A4 SO-04G docomo 16GB" puts less of a burden on the fingers and wrists than the "Xiaomi Redmi K20 Pro Premium 512GB". 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 "Xperia A4 SO-04G docomo 16GB" rather than the "Xiaomi Redmi K20 Pro Premium 512GB".

ScoreWeight
Xiaomi Redmi K20 Pro Premium 512GB54/100191.0g
Xperia A4 SO-04G docomo 16GB78/100129.0g

Which is better in terms of display, "Xiaomi Redmi K20 Pro Premium 512GB" or "Xperia A4 SO-04G docomo 16GB"?

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 "Xiaomi Redmi K20 Pro Premium 512GB" is 6.39inch, and 4.6inch on the "Xperia A4 SO-04G docomo 16GB". Comparing the sizes of the screens and displays, the "Xiaomi Redmi K20 Pro Premium 512GB" is considerably larger than the "Xperia A4 SO-04G docomo 16GB", with a difference of about 1.79inch. Compared to the "Xperia A4 SO-04G docomo 16GB", the "Xiaomi Redmi K20 Pro Premium 512GB" makes buttons in apps easier to press, and the visuals look more impressive in videos and games. The larger screen of the "Xiaomi Redmi K20 Pro Premium 512GB" also has the advantage of being less tiring on the eyes. If you want to avoid tapping the wrong place, enjoy videos and games on a large screen, and not get tired eyes while using it, we recommend that you buy the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreDisplay size
Xiaomi Redmi K20 Pro Premium 512GB90/1006.39inch
Xperia A4 SO-04G docomo 16GB67/1004.6inch

Which one has a better display, "Xiaomi Redmi K20 Pro Premium 512GB" or "Xperia A4 SO-04G docomo 16GB"?

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 "Xiaomi Redmi K20 Pro Premium 512GB" has a 1080 x 2340 resolution and a pixel density of 403ppi. The "Xperia A4 SO-04G docomo 16GB", on the other hand, has a screen resolution of 720 x 1280 and a pixel density of 319ppi. Comparing the screen definition, the "Xiaomi Redmi K20 Pro Premium 512GB" has a much higher pixel density than the "Xperia A4 SO-04G docomo 16GB", with a difference of about 84ppi. The screen on the "Xiaomi Redmi K20 Pro Premium 512GB" is clear and crisp, and puts less strain on the eyes than that of the "Xperia A4 SO-04G docomo 16GB". 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 "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScorePixel density
Xiaomi Redmi K20 Pro Premium 512GB84/100403ppi
Xperia A4 SO-04G docomo 16GB65/100319ppi

How is the battery duration of "Xiaomi Redmi K20 Pro Premium 512GB" different from that of "Xperia A4 SO-04G docomo 16GB" ? 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 "Xiaomi Redmi K20 Pro Premium 512GB" has a battery capacity of 4000.0mAh, while the "Xperia A4 SO-04G docomo 16GB" has a 2600.0mAh battery. With regards to battery performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has a substantially larger battery capacity than the "Xperia A4 SO-04G docomo 16GB", with a difference of 1400mAh. The "Xiaomi Redmi K20 Pro Premium 512GB" can be used without charging for a longer time than the "Xperia A4 SO-04G docomo 16GB", so it can be used when out and about. If you want a smartphone with a longer-lasting battery, we recommend that you buy the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreBattery capacity
Xiaomi Redmi K20 Pro Premium 512GB80/1004000.0mAh
Xperia A4 SO-04G docomo 16GB59/1002600.0mAh

Which is better in terms of CPU function, "Xiaomi Redmi K20 Pro Premium 512GB" or "Xperia A4 SO-04G docomo 16GB"?

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 "Xiaomi Redmi K20 Pro Premium 512GB" is equipped with a Qualcomm SM8150 Snapdragon 855+ processor, and its performance speed is 2.96GHz+2.42GHz+1.8GHz×8(8.0-cores). The "Xperia A4 SO-04G docomo 16GB" uses an Qualcomm Snapdragon 801 MSM8974AC CPU that performs at a speed of 2.5GHz×4(4.0-cores). Comparing CPU performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has significantly higher specs than the "Xperia A4 SO-04G docomo 16GB". The "Xiaomi Redmi K20 Pro Premium 512GB" proves to be more advanced than the "Xperia A4 SO-04G docomo 16GB" in the way that apps run quickly and games play smoothly. If you're looking for a high-spec smartphone that runs quickly and plays games smoothly, we recommend that you buy the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreCPU specs
Xiaomi Redmi K20 Pro Premium 512GB98/1002.96GHz+2.42GHz+1.8GHz×8(8.0-cores)
Xperia A4 SO-04G docomo 16GB56/1002.5GHz×4(4.0-cores)

How is "Xiaomi Redmi K20 Pro Premium 512GB" different from "Xperia A4 SO-04G docomo 16GB" 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 "Xiaomi Redmi K20 Pro Premium 512GB" has 12.0GB of memory. The "Xperia A4 SO-04G docomo 16GB", on the other hand, has 2.0GB. As for memory performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has a larger memory capacity than the "Xperia A4 SO-04G docomo 16GB", with a difference of about 10GB. The "Xiaomi Redmi K20 Pro Premium 512GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "Xperia A4 SO-04G docomo 16GB". If you're looking for a smartphone that will remain stable even when you are using multiple apps at the same time, and which will allow you to play 3D games and VR video comfortably, we recommend that you buy the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreRAM size
Xiaomi Redmi K20 Pro Premium 512GB99/10012.0GB
Xperia A4 SO-04G docomo 16GB50/1002.0GB

Which has a better storage capacity, "Xiaomi Redmi K20 Pro Premium 512GB" or "Xperia A4 SO-04G docomo 16GB"?

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 "Xiaomi Redmi K20 Pro Premium 512GB" has 512.0GB of storage, while the "Xperia A4 SO-04G docomo 16GB" has 16.0GB. In terms of ROM and data storage, the "Xiaomi Redmi K20 Pro Premium 512GB" has a much larger capacity than the "Xperia A4 SO-04G docomo 16GB", with a difference of about 496GB. The "Xiaomi Redmi K20 Pro Premium 512GB" can save more photos and keep more apps installed than the "Xperia A4 SO-04G docomo 16GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreStorage size
Xiaomi Redmi K20 Pro Premium 512GB95/100512.0GB
Xperia A4 SO-04G docomo 16GB50/10016.0GB

Compare the rear cameras of "Xiaomi Redmi K20 Pro Premium 512GB" and "Xperia A4 SO-04G docomo 16GB". 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 "Xiaomi Redmi K20 Pro Premium 512GB" has 48.0MP. The "Xperia A4 SO-04G docomo 16GB" has 20.7MP. The rear-facing camera of the "Xiaomi Redmi K20 Pro Premium 512GB" also has a higher pixel count than the "Xperia A4 SO-04G docomo 16GB", with a difference of about 27.3MP. The "Xiaomi Redmi K20 Pro Premium 512GB" is more capable than the "Xperia A4 SO-04G docomo 16GB" 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 "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreRear-camera resolution
Xiaomi Redmi K20 Pro Premium 512GB97/10048.0MP
Xperia A4 SO-04G docomo 16GB79/10020.7MP

Which has a front camera with better picture quality, "Xiaomi Redmi K20 Pro Premium 512GB" or "Xperia A4 SO-04G docomo 16GB"?

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 "Xiaomi Redmi K20 Pro Premium 512GB" has a resolution of 20.0MP. The "Xperia A4 SO-04G docomo 16GB"'s has 2.2MP. The front-facing camera of the "Xiaomi Redmi K20 Pro Premium 512GB" has a significantly higher number of pixels than the "Xperia A4 SO-04G docomo 16GB", with a difference of about 17.8MP. Therefore, the "Xiaomi Redmi K20 Pro Premium 512GB" is more suitable for taking photos and videos than the "Xperia A4 SO-04G docomo 16GB". If you want to take and print high-quality selfies, we recommend buying the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Xperia A4 SO-04G docomo 16GB".

ScoreFront-camera resolution
Xiaomi Redmi K20 Pro Premium 512GB81/10020.0MP
Xperia A4 SO-04G docomo 16GB18/1002.2MP

Compare Performance Specs

Xiaomi Redmi K20 Pro Premium 512GBXperia A4 SO-04G docomo 16GB
ImageXiaomi Redmi K20 Pro Premium 512GBXperia A4 SO-04G docomo 16GB
MakerXiaomi
Release date2019-092015-06-18
ColorCarbon black/Flame red/Glacier blue/Summer Honey/Pearl WhiteBlue/White/Gray/Pink
OSAndroidAndroid
Dimensions (width x height x thickness)74.3mm x 156.7mm x 8.8mm66.0mm x 128.0mm x 9.1mm
Weight191.0g129.0g
Display size6.39inch4.6inch
Display typeSuper AMOLEDfor mobile
Screen resolution (width x height)1080 x 2340720 x 1280
Pixel density403ppi319ppi
Battery capacity4000.0mAh2600.0mAh
ChipsetQualcomm SM8150 Snapdragon 855+Qualcomm Snapdragon 801 MSM8974AC
CPU specs2.96GHz+2.42GHz+1.8GHz×8(8.0-cores)2.5GHz×4(4.0-cores)
RAM size12.0GB2.0GB
Storage size512.0GB16.0GB
Rear-camera resolution48.0MP20.7MP
Front-camera resolution20.0MP2.2MP

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