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Samsung Galaxy M21 128GB vs Samsung Galaxy M40 128GB: Specs & Scores

Created date: 2020-03-17 15:55:34, Updated date: 2020-04-16 18:00:04

Samsung Galaxy M21 128GBSamsung Galaxy M40 128GB
Samsung Galaxy M21 128GBSamsung Galaxy M40 128GB

Are you having trouble comparing the differences in features and performance of the "Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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.

Samsung Galaxy M21 128GBSamsung Galaxy M40 128GB
Samsung Galaxy M21 128GB

Samsung Galaxy M40 128GB

General rating:
Holding comfortrating-image3.0
60/100
rating-image3.2
64/100
Weightrating-image2.8
55/100
rating-image3.2
63/100
Screen sizerating-image4.5
90/100
rating-image4.5
90/100
Display qualityrating-image4.2
84/100
rating-image4.3
85/100
Battery liferating-image4.3
86/100
rating-image3.6
72/100
Processing powerrating-image4.5
90/100
rating-image4.5
89/100
Memory capacityrating-image4.5
90/100
rating-image4.5
90/100
Storage capacityrating-image4.5
90/100
rating-image4.5
90/100
Rear camera performancerating-image4.9
97/100
rating-image4.6
92/100
Front camera performancerating-image4.1
81/100
rating-image3.8
75/100

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 128GB", performance comparison

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" has a width of 75.1mm, a length of 159.0mm, and a thickness of 8.9mm. Also, the "Samsung Galaxy M40 128GB" has a width of 73.9mm, a length of 155.3mm, and a thickness of 7.9mm.

Comparing the width and thickness of the body, there isn't much difference between the "Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" and the "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" and the "Samsung Galaxy M40 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)
Samsung Galaxy M21 128GB60/10075.1mm x 159.0mm x 8.9mm
Samsung Galaxy M40 128GB64/10073.9mm x 155.3mm x 7.9mm

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" is about 188.0g, and the weight of the "Samsung Galaxy M40 128GB" is about 168.0g. Comparing the weight of the two devices, the "Samsung Galaxy M40 128GB" is a lighter smart phone than the "Samsung Galaxy M21 128GB", with a difference of about 20g. For that reason the "Samsung Galaxy M40 128GB" is a smart phone that is less likely than the "Samsung Galaxy M21 128GB"to put a burden on your fingers and wrist when used for an extended period. That's why we recommend the "Samsung Galaxy M40 128GB" over the "Samsung Galaxy M21 128GB".

ScoreWeight
Samsung Galaxy M21 128GB55/100188.0g
Samsung Galaxy M40 128GB63/100168.0g

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" has a 6.4inch display. Also, the "Samsung Galaxy M40 128GB" has a 6.3inch display. Comparing the screen size, there is a negligible difference in screen size between the "Samsung Galaxy M21 128GB" and the "Samsung Galaxy M40 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
Samsung Galaxy M21 128GB90/1006.4inch
Samsung Galaxy M40 128GB90/1006.3inch

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" is 1080 x 2340, and pixel density is 402ppi. Also, the resolution on the "Samsung Galaxy M40 128GB" is 1080 x 2340, and pixel density is 409ppi. Comparing the pixel count, the difference in pixel density between the "Samsung Galaxy M21 128GB" and the "Samsung Galaxy M40 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
Samsung Galaxy M21 128GB84/100402ppi
Samsung Galaxy M40 128GB85/100409ppi

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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.

The "Samsung Galaxy M21 128GB" is 6000.0mAh, and the "Samsung Galaxy M40 128GB" is 3500.0mAh. Regarding battery capacity, the "Samsung Galaxy M21 128GB" has greater battery capacity than the "Samsung Galaxy M40 128GB", with a 2500mAh difference. Since the "Samsung Galaxy M21 128GB" can be used for longer periods without recharging than the "Samsung Galaxy M40 128GB", it is great for outdoor use. If you want a smartphone with a longer battery life, we recommend the "Samsung Galaxy M21 128GB" over the "Samsung Galaxy M40 128GB".

ScoreBattery capacity
Samsung Galaxy M21 128GB86/1006000.0mAh
Samsung Galaxy M40 128GB72/1003500.0mAh

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB"'s CPU is a Exynos 9611, with performance measured at 2.3GHz+1.7GHz×8(8.0-cores). Also, the "Samsung Galaxy M40 128GB"'s CPU is a Qualcomm SDM675 Snapdragon 675, with performance measured at 2.0GHz+1.7GHz×8(8.0-cores). Comparing CPU performance, there is almost no difference in the specs of the "Samsung Galaxy M21 128GB" and the "Samsung Galaxy M40 128GB". For that reason the level of smoothness felt when using apps and comfortable handling of games is about the same. For that reason it is better to compare them in terms of other aspects of performance and functionality.

ScoreCPU specs
Samsung Galaxy M21 128GB90/1002.3GHz+1.7GHz×8(8.0-cores)
Samsung Galaxy M40 128GB89/1002.0GHz+1.7GHz×8(8.0-cores)

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" is 6.0GB and the weight of the "Samsung Galaxy M40 128GB" is 6.0GB. Comparing the devices in terms of RAM, there is almost no difference in the amount of RAM of the "Samsung Galaxy M21 128GB" and the "Samsung Galaxy M40 128GB". For that reason they have about the same level of multitasking performance and 3D game and VR smoothness. That's why it is better to make a comparison in terms of other aspects of performance and functionality.

ScoreRAM size
Samsung Galaxy M21 128GB90/1006.0GB
Samsung Galaxy M40 128GB90/1006.0GB

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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 "Samsung Galaxy M21 128GB" is 128.0GB. Also the "Samsung Galaxy M40 128GB" is 128.0GB. Regarding storage capacity, there is a negligible difference in storage capacity between the "Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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
Samsung Galaxy M21 128GB90/100128.0GB
Samsung Galaxy M40 128GB90/100128.0GB

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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.

"Samsung Galaxy M21 128GB" has a 48.0MP main camera. Also, "Samsung Galaxy M40 128GB" has a 32.0MP main camera. Comparing rear camera performance, the "Samsung Galaxy M21 128GB" has a higher pixel count than the "Samsung Galaxy M40 128GB", with a roughly 16MP difference. As a result, the "Samsung Galaxy M21 128GB" is better able to take high quality landscape pictures than the "Samsung Galaxy M40 128GB", and the pictures will look cleaner when printed. Therefore, we recommend the "Samsung Galaxy M21 128GB".

ScoreRear-camera resolution
Samsung Galaxy M21 128GB97/10048.0MP
Samsung Galaxy M40 128GB92/10032.0MP

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 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.

"Samsung Galaxy M21 128GB" has an 20.0MP front camera and "Samsung Galaxy M40 128GB" has an 16.0MP front camera. Comparing rear camera performance, the front camera of the "Samsung Galaxy M21 128GB" has a higher pixel count than the "Samsung Galaxy M40 128GB", with a roughly 4MP difference. As a result, the "Samsung Galaxy M21 128GB" is better able to take high quality selfies than the "Samsung Galaxy M40 128GB", and the pictures will look cleaner when printed. Therefore, we recommend the "Samsung Galaxy M21 128GB".

ScoreFront-camera resolution
Samsung Galaxy M21 128GB81/10020.0MP
Samsung Galaxy M40 128GB75/10016.0MP

"Samsung Galaxy M21 128GB" and "Samsung Galaxy M40 128GB", performance comparison by specification sheet

Samsung Galaxy M21 128GBSamsung Galaxy M40 128GB
ImageSamsung Galaxy M21 128GBSamsung Galaxy M40 128GB
MakerSamsungSamsung
Release date2020-03-232019-06
ColorMidnight Blue/Raven BlackSeawater Blue/Midnight Blue/Cocktail Orange
OSAndroidAndroid
Dimensions (width x height x thickness)75.1mm x 159.0mm x 8.9mm73.9mm x 155.3mm x 7.9mm
Weight188.0g168.0g
Display size6.4inch6.3inch
Display typeSuper AMOLEDPLS TFT
Screen resolution (width x height)1080 x 23401080 x 2340
Pixel density402ppi409ppi
Battery capacity6000.0mAh3500.0mAh
ChipsetExynos 9611Qualcomm SDM675 Snapdragon 675
CPU specs2.3GHz+1.7GHz×8(8.0-cores)2.0GHz+1.7GHz×8(8.0-cores)
RAM size6.0GB6.0GB
Storage size128.0GB128.0GB
Rear-camera resolution48.0MP32.0MP
Front-camera resolution20.0MP16.0MP

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