Should you buy Samsung Galaxy A21s 64GB or Samsung Galaxy A51 128GB? Compare the differences in functions and specifications/performances thoroughly
Created date: 2020-05-14 18:20:18
Are you having trouble comparing the differences in features and performance of the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB", 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.
Contents
- 1.Compare Performance and Usability
- 1-0.Which one is easier to hold, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"? Compare weight
- 1-2.Size comparison of "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB". Which one would you choose?
- 1-3.Compare the rear cameras of "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB". Which one has better picture quality?
- 1-4.Which has a front camera with better picture quality, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
- 1-5.Which one has a better display, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
- 1-6.Which is better in terms of display, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
- 1-7.Which has a better storage capacity, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
- 1-8.How is "Samsung Galaxy A21s 64GB" different from "Samsung Galaxy A51 128GB" in terms of memory capacity?
- 1-9.Which is better in terms of CPU function, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
- 1-10.How is the battery duration of "Samsung Galaxy A21s 64GB" different from that of "Samsung Galaxy A51 128GB" ? See the differences
- 2.Compare Performance Specs
Compare Performance and Usability
Size comparison of "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB". 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 "Samsung Galaxy A21s 64GB" is 75.3mm wide, 163.6mm tall, and 8.9mm thick. The "Samsung Galaxy A51 128GB" is 73.6mm tall, 158.5mm wide, and 7.9mm thick.
There is no real difference between the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB" 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 "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB", 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 "Samsung Galaxy A21s 64GB"and "Samsung Galaxy A51 128GB". 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) | |
---|---|---|
Samsung Galaxy A21s 64GB | 60/100 | 75.3mm x 163.6mm x 8.9mm |
Samsung Galaxy A51 128GB | 65/100 | 73.6mm x 158.5mm x 7.9mm |
Which one is easier to hold, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"? 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 "Samsung Galaxy A21s 64GB" weighs 192.0g. The "Samsung Galaxy A51 128GB" clocks in at 172.0g. Comparing the weight of the main unit, the "Samsung Galaxy A51 128GB" is a lighter phone than the "Samsung Galaxy A21s 64GB", with a difference of approximately 20g. Therefore, there is less strain on your fingers and wrists even when you use your phone for a long time on the "Samsung Galaxy A51 128GB" compared to the "Samsung Galaxy A21s 64GB". For this reason, the "Samsung Galaxy A51 128GB" is recommended.
Score | Weight | |
---|---|---|
Samsung Galaxy A21s 64GB | 53/100 | 192.0g |
Samsung Galaxy A51 128GB | 61/100 | 172.0g |
Which is better in terms of display, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
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 "Samsung Galaxy A21s 64GB" is 6.5inch, and 6.5inch on the "Samsung Galaxy A51 128GB". The screens of the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB" 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 | |
---|---|---|
Samsung Galaxy A21s 64GB | 90/100 | 6.5inch |
Samsung Galaxy A51 128GB | 90/100 | 6.5inch |
Which one has a better display, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
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 "Samsung Galaxy A21s 64GB" has a 720 x 1600 resolution and a pixel density of 269ppi. The "Samsung Galaxy A51 128GB", on the other hand, has a screen resolution of 1080 x 2400 and a pixel density of 404ppi. Comparing the screen definition, the "Samsung Galaxy A51 128GB" has a much higher pixel density than the "Samsung Galaxy A21s 64GB", with a difference of about 135ppi. The screen on the "Samsung Galaxy A51 128GB" is clear and crisp, and puts less strain on the eyes than that of the "Samsung Galaxy A21s 64GB". 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 "Samsung Galaxy A51 128GB" rather than the "Samsung Galaxy A21s 64GB".
Score | Pixel density | |
---|---|---|
Samsung Galaxy A21s 64GB | 54/100 | 269ppi |
Samsung Galaxy A51 128GB | 84/100 | 404ppi |
How is the battery duration of "Samsung Galaxy A21s 64GB" different from that of "Samsung Galaxy A51 128GB" ? 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 "Samsung Galaxy A21s 64GB" has a battery capacity of 5000.0mAh, while the "Samsung Galaxy A51 128GB" has a 4000.0mAh battery. The batteries of both the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB" perform to the same extent. There is also no difference in the battery capacities of the "Samsung Galaxy A21s 64GB" and the "Samsung Galaxy A51 128GB". 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 | |
---|---|---|
Samsung Galaxy A21s 64GB | 83/100 | 5000.0mAh |
Samsung Galaxy A51 128GB | 80/100 | 4000.0mAh |
Which is better in terms of CPU function, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
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 "Samsung Galaxy A21s 64GB" is equipped with a Exynos 850 processor, and its performance speed is 2.0GHz+2.0GHz×8(8.0-cores). The "Samsung Galaxy A51 128GB" uses an Exynos 9611 CPU that performs at a speed of 2.3GHz+1.7GHz×8(8.0-cores). There is also no real discrepancy between the CPU performances of the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB". 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.
Score | CPU specs | |
---|---|---|
Samsung Galaxy A21s 64GB | 89/100 | 2.0GHz+2.0GHz×8(8.0-cores) |
Samsung Galaxy A51 128GB | 90/100 | 2.3GHz+1.7GHz×8(8.0-cores) |
How is "Samsung Galaxy A21s 64GB" different from "Samsung Galaxy A51 128GB" 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 "Samsung Galaxy A21s 64GB" has 6.0GB of memory. The "Samsung Galaxy A51 128GB", on the other hand, has 6.0GB. Memory performance is roughly the same for both the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB"; 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.
Score | RAM size | |
---|---|---|
Samsung Galaxy A21s 64GB | 90/100 | 6.0GB |
Samsung Galaxy A51 128GB | 90/100 | 6.0GB |
Which has a better storage capacity, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
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 "Samsung Galaxy A21s 64GB" has 64.0GB of storage, while the "Samsung Galaxy A51 128GB" has 128.0GB. In terms of ROM and data storage, the "Samsung Galaxy A51 128GB" has a much larger capacity than the "Samsung Galaxy A21s 64GB", with a difference of about 64GB. The "Samsung Galaxy A51 128GB" can save more photos and keep more apps installed than the "Samsung Galaxy A21s 64GB". If you're searching for a smartphone that can store more data, we recommended that you buy the "Samsung Galaxy A51 128GB" rather than the "Samsung Galaxy A21s 64GB".
Score | Storage size | |
---|---|---|
Samsung Galaxy A21s 64GB | 67/100 | 64.0GB |
Samsung Galaxy A51 128GB | 90/100 | 128.0GB |
Compare the rear cameras of "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB". 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 "Samsung Galaxy A21s 64GB" has 48.0MP. The "Samsung Galaxy A51 128GB" has 48.0MP. The rear facing cameras of the "Samsung Galaxy A21s 64GB" and "Samsung Galaxy A51 128GB" 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 | |
---|---|---|
Samsung Galaxy A21s 64GB | 97/100 | 48.0MP |
Samsung Galaxy A51 128GB | 97/100 | 48.0MP |
Which has a front camera with better picture quality, "Samsung Galaxy A21s 64GB" or "Samsung Galaxy A51 128GB"?
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 "Samsung Galaxy A21s 64GB" has a resolution of 13.0MP. The "Samsung Galaxy A51 128GB"'s has 32.0MP. The front-facing camera of the "Samsung Galaxy A51 128GB" has a significantly higher number of pixels than the "Samsung Galaxy A21s 64GB", with a difference of about 19MP. Therefore, the "Samsung Galaxy A51 128GB" is more suitable for taking photos and videos than the "Samsung Galaxy A21s 64GB". If you want to take and print high-quality selfies, we recommend buying the "Samsung Galaxy A51 128GB" rather than the "Samsung Galaxy A21s 64GB".
Score | Front-camera resolution | |
---|---|---|
Samsung Galaxy A21s 64GB | 71/100 | 13.0MP |
Samsung Galaxy A51 128GB | 97/100 | 32.0MP |
Compare Performance Specs
Samsung Galaxy A21s 64GB | Samsung Galaxy A51 128GB | |
Image | ||
Maker | Samsung | Samsung |
Release date | 2020-06-19 | 2019-12-26 |
Color | Black/White/Blue/Red | Prism/Crush Black/White/Blue/Pink |
OS | Android | Android |
Dimensions (width x height x thickness) | 75.3mm x 163.6mm x 8.9mm | 73.6mm x 158.5mm x 7.9mm |
Weight | 192.0g | 172.0g |
Display size | 6.5inch | 6.5inch |
Display type | Super AMOLED | Super AMOLED |
Screen resolution (width x height) | 720 x 1600 | 1080 x 2400 |
Pixel density | 269ppi | 404ppi |
Battery capacity | 5000.0mAh | 4000.0mAh |
Chipset | Exynos 850 | Exynos 9611 |
CPU specs | 2.0GHz+2.0GHz×8(8.0-cores) | 2.3GHz+1.7GHz×8(8.0-cores) |
RAM size | 6.0GB | 6.0GB |
Storage size | 64.0GB | 128.0GB |
Rear-camera resolution | 48.0MP | 48.0MP |
Front-camera resolution | 13.0MP | 32.0MP |
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