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Which is better, vivo iQOO 7 (2021) 256GB or Samsung Galaxy M21 128GB? We compared their features and specs in detail

Created date: 2021-01-11 16:34:13

vivo iQOO 7 (2021) 256GBSamsung Galaxy M21 128GB
vivo iQOO 7 (2021) 256GBSamsung Galaxy M21 128GB

How did the evaluations between the "vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB" differ when we compared the two? We reviewed each of the most commonly scrutinized features. If you are thinking about which smartphone to get, check out this review immediately!

vivo iQOO 7 (2021) 256GBSamsung Galaxy M21 128GB
vivo iQOO 7 (2021) 256GB

Samsung Galaxy M21 128GB

General rating:

78.7/100

(The 4165th of all smartphones)

74.9/100

(The 3273th of all smartphones)

Holding comfort
59/100
60/100
Weight
48/100
55/100
Screen size
91/100
90/100
Display quality
84/100
84/100
Battery life
- /100
86/100
Processing power
98/100
90/100
Memory capacity
99/100
90/100
Storage capacity
91/100
90/100
Rear camera performance
97/100
97/100
Front camera performance
75/100
81/100

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", performance comparison

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB" size comparison. Which to choose?

The size of the body has a big influence on the ease of carrying and one-handed operation. The narrower the width, the easier it is to firmly grasp and hold, but you also have to take into account the device's thickness. Also, if the width and height are smaller, its easier to operate one-handed since its easier to extend your fingers. On the contrary, if the width and height are large, it's difficult to fit in your pocket and is bulky even when put in a bag, and portability is impaired.

The "vivo iQOO 7 (2021) 256GB" has a width of 75.8mm, a length of 162.2mm, and a thickness of 8.7mm. Also, the "Samsung Galaxy M21 128GB" has a width of 75.1mm, a length of 159.0mm, and a thickness of 8.9mm.

Comparing the width and thickness of the body, there isn't much difference between the "vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB" in terms of size. For that reason, the ease of gripping and carrying the devices in one hand is about the same for both. Therefore it's better to compare them in terms of performance and functionality.

Comparing the width and thickness of the body, there isn't a large difference in size between the "vivo iQOO 7 (2021) 256GB" and the "Samsung Galaxy M21 128GB". For that reason their one-handed operability, portability, and bulkiness when carried is about the same. That's why I think it's better to compare them in terms of other aspects of performance and functionality.

Comparing the overall size of the two devices, there isn't a big difference in size between the "vivo iQOO 7 (2021) 256GB" and the "Samsung Galaxy M21 128GB". For that reason the ease of carrying and use with one hand is about the same for both. That's why it is better to compare the two in terms of other aspects of performance and functionality.

ScoreDimensions (width x height x thickness)
vivo iQOO 7 (2021) 256GB59/10075.8mm x 162.2mm x 8.7mm
Samsung Galaxy M21 128GB60/10075.1mm x 159.0mm x 8.9mm

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", which is more comfortable to hold? Weight comparison

The weight of the device affects hand fatigue and the burden placed upon the wrist. The lighter it is, the longer you'll be able to operate the device without tiring. Also, if the burden placed on the wrist is lower, you'll be able to use the device more comfortably. However if the weight isn't right for you, it could place more of a burden on your body, causing you to feel stress.

The weight of the "vivo iQOO 7 (2021) 256GB" is about 209.5g, and the weight of the "Samsung Galaxy M21 128GB" is about 188.0g. Comparing the weight of the two devices, the "Samsung Galaxy M21 128GB" is a lighter smart phone than the "vivo iQOO 7 (2021) 256GB", with a difference of about 21.5g. For that reason the "Samsung Galaxy M21 128GB" is a smart phone that is less likely than the "vivo iQOO 7 (2021) 256GB"to put a burden on your fingers and wrist when used for an extended period. That's why we recommend the "Samsung Galaxy M21 128GB" over the "vivo iQOO 7 (2021) 256GB".

ScoreWeight
vivo iQOO 7 (2021) 256GB48/100209.5g
Samsung Galaxy M21 128GB55/100188.0g

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", whose display is easier to use?

The size of the screen affects usability and screen visibility. A larger screen means larger letters and buttons on apps, so the user is less likely to tap adjacent buttons by mistake. In addition, the user can enjoy a more intense experience when playing games and watching videos.

The "vivo iQOO 7 (2021) 256GB" has a 6.62inch display. Also, the "Samsung Galaxy M21 128GB" has a 6.4inch display. Comparing the screen size, there is a negligible difference in screen size between the "vivo iQOO 7 (2021) 256GB" and the "Samsung Galaxy M21 128GB". As a result, the app buttons on both are equally easy to press. We recommend comparing them based on other aspects of performance and functionality.

ScoreDisplay size
vivo iQOO 7 (2021) 256GB91/1006.62inch
Samsung Galaxy M21 128GB90/1006.4inch

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", which has a clearer display?

Pixel density affects picture quality, and the higher the pixel density, the better the picture quality, which means the user can gain more enjoyment from games and videos. In addition, higher picture quality decreases eyestrain, which means that the user will experience less eye fatigue after prolonged use.

The resolution on the "vivo iQOO 7 (2021) 256GB" is 1080 x 2400, and pixel density is 397ppi. Also, the resolution on the "Samsung Galaxy M21 128GB" is 1080 x 2340, and pixel density is 402ppi. Comparing the pixel count, the difference in pixel density between the "vivo iQOO 7 (2021) 256GB" and the "Samsung Galaxy M21 128GB" is negligible. As a result, they are both evenly matched in terms of picture quality and easiness on the eyes. Therefore, we recommend comparing them based on other aspects of performance and functionality.

ScorePixel density
vivo iQOO 7 (2021) 256GB84/100397ppi
Samsung Galaxy M21 128GB84/100402ppi

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", a summary of the differences in battery life

Battery performance greatly affects battery life, but greater battery capacity does not necessarily mean greater battery life, since battery efficiency should also be considered. Bigger screens and higher CPU performance will mean the batteries are depleted more quickly.

ScoreBattery capacity
vivo iQOO 7 (2021) 256GB - /100
Samsung Galaxy M21 128GB86/1006000.0mAh

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", which has better CPU?

CPU performance affects the ability to process programs, and the ability to process programs is determined by the product of the number of cores in the CPU and the CPU frequency. The higher this performance is, the more smoothly apps and games will run, and with low performance apps and games become heavy and stress is experienced.

The "vivo iQOO 7 (2021) 256GB"'s CPU is a Qualcomm SM8350 Snapdragon 888, with performance measured at 2.84GHz+2.42GHz+1.8GHz×8(8.0-cores). Also, the "Samsung Galaxy M21 128GB"'s CPU is a Exynos 9611, with performance measured at 2.3GHz+1.7GHz×8(8.0-cores). Comparing CPU performance, the "vivo iQOO 7 (2021) 256GB" has higher specs compared to the "Samsung Galaxy M21 128GB". For that reason, the "vivo iQOO 7 (2021) 256GB" allows for more comfortable use of apps, and games that run more smoothly. That's why we recommend the "vivo iQOO 7 (2021) 256GB" over the "Samsung Galaxy M21 128GB".

ScoreCPU specs
vivo iQOO 7 (2021) 256GB98/1002.84GHz+2.42GHz+1.8GHz×8(8.0-cores)
Samsung Galaxy M21 128GB90/1002.3GHz+1.7GHz×8(8.0-cores)

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", what's the difference in memory capacity?

RAM affects multitasking ability and the stability of apps. The larger the amount of RAM is, the more stability there will be even in situations where multiple apps are running simultaneously, allowing for comfortable use. In addition, animation will be more smooth, and apps will be less likely to freeze or crash. Also, without sufficient RAM, there are games you won't be able to run, so it is necessary to be careful.

The weight of the "vivo iQOO 7 (2021) 256GB" is 12.0GB and the weight of the "Samsung Galaxy M21 128GB" is 6.0GB. Comparing the devices in terms of RAM, the "vivo iQOO 7 (2021) 256GB" has more RAM than the "Samsung Galaxy M21 128GB", with a difference of about 6GB. For that reason the "vivo iQOO 7 (2021) 256GB" allows for smoother multitasking than the "Samsung Galaxy M21 128GB", and apps are less likely to crash. In addition the "vivo iQOO 7 (2021) 256GB" allows for smoother enjoyment of 3D games and VR. For this reason, we recommend the "vivo iQOO 7 (2021) 256GB".

ScoreRAM size
vivo iQOO 7 (2021) 256GB99/10012.0GB
Samsung Galaxy M21 128GB90/1006.0GB

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", which has more data storage?

Storage capacity affects the amount of data that is capable of being stored. The larger the storage capacity, the more pictures you can take and the more applications you can install. In addition, if your smartphone accepts SD cards, then you can increase its storage capacity. However, there are performance related drawbacks, including a slower data transfer rate than the primary memory, and you cannot transfer all your data on the card, so be warned.

The data storage capacity of the "vivo iQOO 7 (2021) 256GB" is 256.0GB. Also the "Samsung Galaxy M21 128GB" is 128.0GB. Regarding storage capacity, there is a negligible difference in storage capacity between the "vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB". As a result, you can save roughly the same amount of pictures, and install roughly the same amount of applications, on either phone. You are better off comparing them based on other aspects of performance and functionality.

ScoreStorage size
vivo iQOO 7 (2021) 256GB91/100256.0GB
Samsung Galaxy M21 128GB90/100128.0GB

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB" rear camera performance comparison. Which has a higher resolution?

One factor that determines the performance of the exterior camera located on the back of the device (the rear/back camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"vivo iQOO 7 (2021) 256GB" has a 48.0MP main camera. Also, "Samsung Galaxy M21 128GB" has a 48.0MP main camera. Comparing rear camera performance, the "vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB" have approximately the same pixel count. As a result, they can both take pictures and shoot videos of roughly the same quality. Therefore, we recommend comparing the two based on other aspects of performance and functionality.

ScoreRear-camera resolution
vivo iQOO 7 (2021) 256GB97/10048.0MP
Samsung Galaxy M21 128GB97/10048.0MP

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", whose front camera has a better picture quality?

One factor that determines the performance of the exterior camera located on the front of the device (the in/front camera) is the pixel count. The larger the pixel count, the higher the resolution of the pictures you can take, and the cleaner the pictures will look when printed.

"vivo iQOO 7 (2021) 256GB" has an 16.0MP front camera and "Samsung Galaxy M21 128GB" has an 20.0MP front camera. Comparing rear camera performance, the front camera of the "Samsung Galaxy M21 128GB" has a higher pixel count than the "vivo iQOO 7 (2021) 256GB", with a roughly 4MP difference. As a result, the "Samsung Galaxy M21 128GB" is better able to take high quality selfies than the "vivo iQOO 7 (2021) 256GB", and the pictures will look cleaner when printed. Therefore, we recommend the "Samsung Galaxy M21 128GB".

ScoreFront-camera resolution
vivo iQOO 7 (2021) 256GB75/10016.0MP
Samsung Galaxy M21 128GB81/10020.0MP

"vivo iQOO 7 (2021) 256GB" and "Samsung Galaxy M21 128GB", performance comparison by specification sheet

vivo iQOO 7 (2021) 256GBSamsung Galaxy M21 128GB
Imagevivo iQOO 7 (2021) 256GBSamsung Galaxy M21 128GB
MakervivoSamsung
Release date2021-01-162020-03-23
ColorGray/Blue/WhiteMidnight Blue/Raven Black
OSAndroidAndroid
Dimensions (width x height x thickness)75.8mm x 162.2mm x 8.7mm75.1mm x 159.0mm x 8.9mm
Weight209.5g188.0g
Display size6.62inch6.4inch
Display typeAMOLEDSuper AMOLED
Screen resolution (width x height)1080 x 24001080 x 2340
Pixel density397ppi402ppi
ChipsetQualcomm SM8350 Snapdragon 888Exynos 9611
CPU specs2.84GHz+2.42GHz+1.8GHz×8(8.0-cores)2.3GHz+1.7GHz×8(8.0-cores)
RAM size12.0GB6.0GB
Storage size256.0GB128.0GB
Rear-camera resolution48.0MP48.0MP
Front-camera resolution16.0MP20.0MP

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