Browsing this site requires consent to the privacy policy. By continuing to browse, you agree to our privacy policy. If you do not agree, please stop browsing. Privacy policy

All our articles is independent of any advertiser or commercial initiative, and if you buy something through our posts, we may get a small share of the sale. Click here for more information.

Which should you buy, the Ulefone S1 (2018) 8GB or Xiaomi Redmi K20 Pro Premium 512GB? We offer a thorough comparison of the differences in functions, specifications and performance between the two

Created date: 2020-01-08 17:31:51, Updated date: 2021-10-20 19:14:19

Ulefone S1 (2018) 8GBXiaomi Redmi K20 Pro Premium 512GB
Ulefone S1 (2018) 8GBXiaomi Redmi K20 Pro Premium 512GB

Are you having trouble comparing the differences in features and performance of the "Ulefone S1 (2018) 8GB" and "Xiaomi Redmi K20 Pro Premium 512GB", 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.

Ulefone S1 (2018) 8GBXiaomi Redmi K20 Pro Premium 512GB
Ulefone S1 (2018) 8GB

Xiaomi Redmi K20 Pro Premium 512GB

General rating:
Portabilityrating-image3.4
67/100
rating-image3.1
62/100
Weightrating-image2.9
57/100
rating-image2.7
54/100
Size of screenrating-image4.1
82/100
rating-image4.5
90/100
Screen clarityrating-image1.3
25/100
rating-image4.2
84/100
Battery durationrating-image3.3
65/100
rating-image4.0
80/100
Processing capabilityrating-image1
16/100
rating-image4.9
98/100
Memory capacityrating-image1.0
20/100
rating-image5.0
99/100
Storage capacityrating-image1.2
24/100
rating-image4.8
95/100
Rear camera functionrating-image1.4
27/100
rating-image4.9
97/100
Front camera functionrating-image1
15/100
rating-image4.1
81/100

Compare Performance and Usability

Size comparison of "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" is 70.7mm wide, 148.6mm tall, and 9.6mm thick. The "Xiaomi Redmi K20 Pro Premium 512GB" is 74.3mm tall, 156.7mm wide, and 8.8mm thick.

Comparing the width and thickness of the main unit, the "Ulefone S1 (2018) 8GB" is smaller and more compact compared to the "Xiaomi Redmi K20 Pro Premium 512GB". Therefore, it is easier to grip and hold the "Ulefone S1 (2018) 8GB" than the "Xiaomi Redmi K20 Pro Premium 512GB". For this reason, the "Ulefone S1 (2018) 8GB" is recommended.

There is no real difference in length or width between the "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB"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.

ScoreDimensions (width x height x thickness)
Ulefone S1 (2018) 8GB67/10070.7mm x 148.6mm x 9.6mm
Xiaomi Redmi K20 Pro Premium 512GB62/10074.3mm x 156.7mm x 8.8mm

Which one is easier to hold, "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" weighs 183.0g. The "Xiaomi Redmi K20 Pro Premium 512GB" clocks in at 191.0g. The "Ulefone S1 (2018) 8GB" and "Xiaomi Redmi K20 Pro Premium 512GB" have around the same weight, so prolonged use will tire out fingers nd wrists to around the same degree. Because of this, it is better to compare them based on other aspects of performance and function.

ScoreWeight
Ulefone S1 (2018) 8GB57/100183.0g
Xiaomi Redmi K20 Pro Premium 512GB54/100191.0g

Which is better in terms of display, "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" is 5.5inch, and 6.39inch on the "Xiaomi Redmi K20 Pro Premium 512GB". Comparing the size of the display and screen, the screen size of the "Xiaomi Redmi K20 Pro Premium 512GB" is larger than that of the "Ulefone S1 (2018) 8GB", with a difference of approximately 0.88inch. As a result, there will be unintended touches on the "Xiaomi Redmi K20 Pro Premium 512GB" compared to the "Ulefone S1 (2018) 8GB" and it is possible to enjoy games and videos on a large screen. For this reason, the "Xiaomi Redmi K20 Pro Premium 512GB" is recommended.

ScoreDisplay size
Ulefone S1 (2018) 8GB82/1005.5inch
Xiaomi Redmi K20 Pro Premium 512GB90/1006.39inch

Which one has a better display, "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" has a 480 x 960 resolution and a pixel density of 195ppi. 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. Comparing the screen definition, the "Xiaomi Redmi K20 Pro Premium 512GB" has a much higher pixel density than the "Ulefone S1 (2018) 8GB", with a difference of about 208ppi. 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 "Ulefone S1 (2018) 8GB". 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 "Ulefone S1 (2018) 8GB".

ScorePixel density
Ulefone S1 (2018) 8GB25/100195ppi
Xiaomi Redmi K20 Pro Premium 512GB84/100403ppi

How is the battery duration of "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" has a battery capacity of 3000.0mAh, while the "Xiaomi Redmi K20 Pro Premium 512GB" has a 4000.0mAh battery. With regards to battery performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has a substantially larger battery capacity than the "Ulefone S1 (2018) 8GB", with a difference of 1000mAh. The "Xiaomi Redmi K20 Pro Premium 512GB" can be used without charging for a longer time than the "Ulefone S1 (2018) 8GB", 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 "Ulefone S1 (2018) 8GB".

ScoreBattery capacity
Ulefone S1 (2018) 8GB65/1003000.0mAh
Xiaomi Redmi K20 Pro Premium 512GB80/1004000.0mAh

Which is better in terms of CPU function, "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" is equipped with a Mediatek MT6580 processor, and its performance speed is 1.3GHz×4(4.0-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 CPU performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has significantly higher specs than the "Ulefone S1 (2018) 8GB". The "Xiaomi Redmi K20 Pro Premium 512GB" proves to be more advanced than the "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB".

ScoreCPU specs
Ulefone S1 (2018) 8GB16/1001.3GHz×4(4.0-cores)
Xiaomi Redmi K20 Pro Premium 512GB98/1002.96GHz+2.42GHz+1.8GHz×8(8.0-cores)

How is "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" has 1.0GB of memory. The "Xiaomi Redmi K20 Pro Premium 512GB", on the other hand, has 12.0GB. As for memory performance, the "Xiaomi Redmi K20 Pro Premium 512GB" has a larger memory capacity than the "Ulefone S1 (2018) 8GB", with a difference of about 11GB. The "Xiaomi Redmi K20 Pro Premium 512GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "Ulefone S1 (2018) 8GB". 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 "Ulefone S1 (2018) 8GB".

ScoreRAM size
Ulefone S1 (2018) 8GB20/1001.0GB
Xiaomi Redmi K20 Pro Premium 512GB99/10012.0GB

Which has a better storage capacity, "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" has 8.0GB of storage, while the "Xiaomi Redmi K20 Pro Premium 512GB" has 512.0GB. In terms of ROM and data storage, the "Xiaomi Redmi K20 Pro Premium 512GB" has a much larger capacity than the "Ulefone S1 (2018) 8GB", with a difference of about 504GB. The "Xiaomi Redmi K20 Pro Premium 512GB" can save more photos and keep more apps installed than the "Ulefone S1 (2018) 8GB". 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 "Ulefone S1 (2018) 8GB".

ScoreStorage size
Ulefone S1 (2018) 8GB24/1008.0GB
Xiaomi Redmi K20 Pro Premium 512GB95/100512.0GB

Compare the rear cameras of "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" has 5.0MP. The "Xiaomi Redmi K20 Pro Premium 512GB" has 48.0MP. The rear-facing camera of the "Xiaomi Redmi K20 Pro Premium 512GB" also has a higher pixel count than the "Ulefone S1 (2018) 8GB", with a difference of about 43MP. The "Xiaomi Redmi K20 Pro Premium 512GB" is more capable than the "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB".

ScoreRear-camera resolution
Ulefone S1 (2018) 8GB27/1005.0MP
Xiaomi Redmi K20 Pro Premium 512GB97/10048.0MP

Which has a front camera with better picture quality, "Ulefone S1 (2018) 8GB" 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 "Ulefone S1 (2018) 8GB" has a resolution of 2.0MP. The "Xiaomi Redmi K20 Pro Premium 512GB"'s has 20.0MP. The front-facing camera of the "Xiaomi Redmi K20 Pro Premium 512GB" has a significantly higher number of pixels than the "Ulefone S1 (2018) 8GB", with a difference of about 18MP. Therefore, the "Xiaomi Redmi K20 Pro Premium 512GB" is more suitable for taking photos and videos than the "Ulefone S1 (2018) 8GB". If you want to take and print high-quality selfies, we recommend buying the "Xiaomi Redmi K20 Pro Premium 512GB" rather than the "Ulefone S1 (2018) 8GB".

ScoreFront-camera resolution
Ulefone S1 (2018) 8GB15/1002.0MP
Xiaomi Redmi K20 Pro Premium 512GB81/10020.0MP

Compare Performance Specs

Ulefone S1 (2018) 8GBXiaomi Redmi K20 Pro Premium 512GB
ImageUlefone S1 (2018) 8GBXiaomi Redmi K20 Pro Premium 512GB
MakerUlefoneXiaomi
Release date2018-082019-09
ColorGold/BlackCarbon black/Flame red/Glacier blue/Summer Honey/Pearl White
OSAndroidAndroid
Dimensions (width x height x thickness)70.7mm x 148.6mm x 9.6mm74.3mm x 156.7mm x 8.8mm
Weight183.0g191.0g
Display size5.5inch6.39inch
Display typeIPS LCDSuper AMOLED
Screen resolution (width x height)480 x 9601080 x 2340
Pixel density195ppi403ppi
Battery capacity3000.0mAh4000.0mAh
ChipsetMediatek MT6580Qualcomm SM8150 Snapdragon 855+
CPU specs1.3GHz×4(4.0-cores)2.96GHz+2.42GHz+1.8GHz×8(8.0-cores)
RAM size1.0GB12.0GB
Storage size8.0GB512.0GB
Rear-camera resolution5.0MP48.0MP
Front-camera resolution2.0MP20.0MP

Look at a smartphone

Compare smartphones

Look at a smartphone

Compare smartphones

Check price

Articles related to Ulefone S1 (2018) 8GB
Articles related to Xiaomi Redmi K20 Pro Premium 512GB

Ulefone S1 (2018) 8GB

Search for smartphone with similar ratings as Ulefone S1 (2018) 8GB

Articles related to Ulefone S1 (2018) 8GB
Articles related to Xiaomi Redmi K20 Pro Premium 512GB

Xiaomi Redmi K20 Pro Premium 512GB

Search for smartphone with similar ratings as Xiaomi Redmi K20 Pro Premium 512GB

New articles