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Should you buy Galaxy S21 Ultra 5G 512GB or Galaxy J2 Core (2020) 16GB? Compare the differences in functions and specifications/performances thoroughly

Created date: 2021-01-13 14:37:14

Galaxy S21 Ultra 5G 512GBGalaxy J2 Core (2020) 16GB
Galaxy S21 Ultra 5G 512GBGalaxy J2 Core (2020) 16GB

Are you having trouble comparing the differences in features and performance of the "Galaxy S21 Ultra 5G 512GB" and "Galaxy J2 Core (2020) 16GB", 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.

Galaxy S21 Ultra 5G 512GBGalaxy J2 Core (2020) 16GB
Galaxy S21 Ultra 5G 512GB

Galaxy J2 Core (2020) 16GB

General rating:
Portabilityrating-image3.0
59/100
rating-image3.3
66/100
Weightrating-image2.3
46/100
rating-image3.4
68/100
Size of screenrating-image4.6
91/100
rating-image3.7
74/100
Screen clarityrating-image4.4
88/100
rating-image1.8
36/100
Battery durationrating-image
- /100
rating-image3.0
59/100
Processing capabilityrating-image5.0
99/100
rating-image1
18/100
Memory capacityrating-image5.0
100/100
rating-image1.0
20/100
Storage capacityrating-image4.8
95/100
rating-image2.5
50/100
Rear camera functionrating-image5.0
100/100
rating-image2.5
50/100
Front camera functionrating-image5.0
100/100
rating-image2.5
50/100

Compare Performance and Usability

Size comparison of "Galaxy S21 Ultra 5G 512GB" and "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" is 75.6mm wide, 165.1mm tall, and 8.9mm thick. The "Galaxy J2 Core (2020) 16GB" is 72.1mm tall, 143.4mm wide, and 8.9mm thick.

Comparing the width and thickness of the main unit, the "Galaxy J2 Core (2020) 16GB" is smaller and more compact compared to the "Galaxy S21 Ultra 5G 512GB". Therefore, it is easier to grip and hold the "Galaxy J2 Core (2020) 16GB" than the "Galaxy S21 Ultra 5G 512GB". For this reason, the "Galaxy J2 Core (2020) 16GB" is recommended.

Comparing the width and height of the main unit, the "Galaxy J2 Core (2020) 16GB" is smaller and more compact than the "Galaxy S21 Ultra 5G 512GB". As a result, the "Galaxy J2 Core (2020) 16GB" is easier to operate with one hand and it is more portable without getting in your way than the "Galaxy S21 Ultra 5G 512GB". Therefore, the "Galaxy J2 Core (2020) 16GB" is recommended.

Comparing the overall size of the main unit, the "Galaxy J2 Core (2020) 16GB" is smaller than the "Galaxy S21 Ultra 5G 512GB". As a result, it is easier to use the "Galaxy J2 Core (2020) 16GB" with one hand compared to the "Galaxy S21 Ultra 5G 512GB", and its size makes it more comfortable to carry around. For this reason, the "Galaxy J2 Core (2020) 16GB" is recommended.

ScoreDimensions (width x height x thickness)
Galaxy S21 Ultra 5G 512GB59/10075.6mm x 165.1mm x 8.9mm
Galaxy J2 Core (2020) 16GB66/10072.1mm x 143.4mm x 8.9mm

Which one is easier to hold, "Galaxy S21 Ultra 5G 512GB" or "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" weighs 227.0g. The "Galaxy J2 Core (2020) 16GB" clocks in at 154.0g. If you compare the weight of the two, the "Galaxy J2 Core (2020) 16GB" is a considerably lighter smartphone than the "Galaxy S21 Ultra 5G 512GB", with a difference of about 73g. Because of this, the "Galaxy J2 Core (2020) 16GB" puts less of a burden on the fingers and wrists than the "Galaxy S21 Ultra 5G 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 "Galaxy J2 Core (2020) 16GB" rather than the "Galaxy S21 Ultra 5G 512GB".

ScoreWeight
Galaxy S21 Ultra 5G 512GB46/100227.0g
Galaxy J2 Core (2020) 16GB68/100154.0g

Which is better in terms of display, "Galaxy S21 Ultra 5G 512GB" or "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" is 6.8inch, and 5.0inch on the "Galaxy J2 Core (2020) 16GB". Comparing the sizes of the screens and displays, the "Galaxy S21 Ultra 5G 512GB" is considerably larger than the "Galaxy J2 Core (2020) 16GB", with a difference of about 1.7inch. Compared to the "Galaxy J2 Core (2020) 16GB", the "Galaxy S21 Ultra 5G 512GB" makes buttons in apps easier to press, and the visuals look more impressive in videos and games. The larger screen of the "Galaxy S21 Ultra 5G 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 "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScoreDisplay size
Galaxy S21 Ultra 5G 512GB91/1006.8inch
Galaxy J2 Core (2020) 16GB74/1005.0inch

Which one has a better display, "Galaxy S21 Ultra 5G 512GB" or "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" has a 1440 x 3200 resolution and a pixel density of 516ppi. The "Galaxy J2 Core (2020) 16GB", on the other hand, has a screen resolution of 540 x 960 and a pixel density of 220ppi. Comparing the screen definition, the "Galaxy S21 Ultra 5G 512GB" has a much higher pixel density than the "Galaxy J2 Core (2020) 16GB", with a difference of about 296ppi. The screen on the "Galaxy S21 Ultra 5G 512GB" is clear and crisp, and puts less strain on the eyes than that of the "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScorePixel density
Galaxy S21 Ultra 5G 512GB88/100516ppi
Galaxy J2 Core (2020) 16GB36/100220ppi

How is the battery duration of "Galaxy S21 Ultra 5G 512GB" different from that of "Galaxy J2 Core (2020) 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.

ScoreBattery capacity
Galaxy S21 Ultra 5G 512GB - /100
Galaxy J2 Core (2020) 16GB59/1002600.0mAh

Which is better in terms of CPU function, "Galaxy S21 Ultra 5G 512GB" or "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" is equipped with a Exynos 2100 processor, and its performance speed is 2.9GHz+2.8GHz+2.2GHz×8(8.0-cores). The "Galaxy J2 Core (2020) 16GB" uses an Exynos 7570 Quad CPU that performs at a speed of 1.4GHz×4(4.0-cores). Comparing CPU performance, the "Galaxy S21 Ultra 5G 512GB" has significantly higher specs than the "Galaxy J2 Core (2020) 16GB". The "Galaxy S21 Ultra 5G 512GB" proves to be more advanced than the "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScoreCPU specs
Galaxy S21 Ultra 5G 512GB99/1002.9GHz+2.8GHz+2.2GHz×8(8.0-cores)
Galaxy J2 Core (2020) 16GB18/1001.4GHz×4(4.0-cores)

How is "Galaxy S21 Ultra 5G 512GB" different from "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" has 16.0GB of memory. The "Galaxy J2 Core (2020) 16GB", on the other hand, has 1.0GB. As for memory performance, the "Galaxy S21 Ultra 5G 512GB" has a larger memory capacity than the "Galaxy J2 Core (2020) 16GB", with a difference of about 15GB. The "Galaxy S21 Ultra 5G 512GB" has better multitasking, less crashing, and runs 3D games and VR video better than the "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScoreRAM size
Galaxy S21 Ultra 5G 512GB100/10016.0GB
Galaxy J2 Core (2020) 16GB20/1001.0GB

Which has a better storage capacity, "Galaxy S21 Ultra 5G 512GB" or "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" has 512.0GB of storage, while the "Galaxy J2 Core (2020) 16GB" has 16.0GB. In terms of ROM and data storage, the "Galaxy S21 Ultra 5G 512GB" has a much larger capacity than the "Galaxy J2 Core (2020) 16GB", with a difference of about 496GB. The "Galaxy S21 Ultra 5G 512GB" can save more photos and keep more apps installed than the "Galaxy J2 Core (2020) 16GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScoreStorage size
Galaxy S21 Ultra 5G 512GB95/100512.0GB
Galaxy J2 Core (2020) 16GB50/10016.0GB

Compare the rear cameras of "Galaxy S21 Ultra 5G 512GB" and "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" has 108.0MP. The "Galaxy J2 Core (2020) 16GB" has 8.0MP. The rear-facing camera of the "Galaxy S21 Ultra 5G 512GB" also has a higher pixel count than the "Galaxy J2 Core (2020) 16GB", with a difference of about 100MP. The "Galaxy S21 Ultra 5G 512GB" is more capable than the "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScoreRear-camera resolution
Galaxy S21 Ultra 5G 512GB100/100108.0MP
Galaxy J2 Core (2020) 16GB50/1008.0MP

Which has a front camera with better picture quality, "Galaxy S21 Ultra 5G 512GB" or "Galaxy J2 Core (2020) 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 "Galaxy S21 Ultra 5G 512GB" has a resolution of 40.0MP. The "Galaxy J2 Core (2020) 16GB"'s has 5.0MP. The front-facing camera of the "Galaxy S21 Ultra 5G 512GB" has a significantly higher number of pixels than the "Galaxy J2 Core (2020) 16GB", with a difference of about 35MP. Therefore, the "Galaxy S21 Ultra 5G 512GB" is more suitable for taking photos and videos than the "Galaxy J2 Core (2020) 16GB". If you want to take and print high-quality selfies, we recommend buying the "Galaxy S21 Ultra 5G 512GB" rather than the "Galaxy J2 Core (2020) 16GB".

ScoreFront-camera resolution
Galaxy S21 Ultra 5G 512GB100/10040.0MP
Galaxy J2 Core (2020) 16GB50/1005.0MP

Compare Performance Specs

Galaxy S21 Ultra 5G 512GBGalaxy J2 Core (2020) 16GB
ImageGalaxy S21 Ultra 5G 512GBGalaxy J2 Core (2020) 16GB
MakerSamsungSamsung
Release date2021-01-292020-04-27
ColorPhantom Black/Phantom Silver/Phantom Titanium/Phantom Navy/Phantom BrownBlack/Gold/Blue
OSAndroidAndroid
Dimensions (width x height x thickness)75.6mm x 165.1mm x 8.9mm72.1mm x 143.4mm x 8.9mm
Weight227.0g154.0g
Display size6.8inch5.0inch
Display typeDynamic AMOLED 2XPLS TFT
Screen resolution (width x height)1440 x 3200540 x 960
Pixel density516ppi220ppi
ChipsetExynos 2100Exynos 7570 Quad
CPU specs2.9GHz+2.8GHz+2.2GHz×8(8.0-cores)1.4GHz×4(4.0-cores)
RAM size16.0GB1.0GB
Storage size512.0GB16.0GB
Rear-camera resolution108.0MP8.0MP
Front-camera resolution40.0MP5.0MP

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