47points

Samsung Galaxy A21s

58points

Samsung Galaxy A31

vs
vs

132 facts in comparison

Samsung Galaxy A21s vs Samsung Galaxy A31

Samsung Galaxy A21s
Samsung Galaxy A31

Why is Samsung Galaxy A21s better than Samsung Galaxy A31?

  • 1.91% faster CPU speed
    ?

    4 x 2GHz & 4 x 2GHzvs2 x 2 & 6 x 1.95GHz
  • 1.56% bigger screen size
    ?

    6.5"vs6.4"
  • 4nm smaller semiconductor size
    ?

    8nmvs12nm
  • Has NX bit
    ?
  • 256GB more external memory supported
    ?

    512GBvs256GB

Why is Samsung Galaxy A31 better than Samsung Galaxy A21s?

  • 1.52x higher pixel density
    ?

    411ppivs270ppi
  • 2.25x higher resolution
    ?

    1080 x 2400pxvs720 x 1600px
  • 10% more megapixels (main camera)
    ?

    48MP & 8MP & 5MP & 5MPvs48 & 8 & 2 & 2MP
  • 1.54x more megapixels (front camera)
    ?

    20MPvs13MP
  • 64GB more internal storage
    ?

    128GBvs64GB
  • 7g lighter
    ?

    185gvs192g
  • 0.3mm thinner
    ?

    8.6mmvs8.9mm
  • Supports two SIM cards
    ?

Price comparison

Samsung Galaxy A21s

ProductStorePrice
Samsung Galaxy A21s AmazonSamsung Galaxy A21S SM-A217M/DS 4G LTE 6...Samsung Galaxy A21S SM-A217M/DS 4G LTE 64GB + 4GB Ram LTE USA w/Four Cameras (48+8+2+2mp) Android International Version (GSM Only, Not CDMA) (Blue)
Amazon logo
$189.99
Samsung Galaxy A21s AmazonSamsung Galaxy A21S 32GB 6.5" 4G LTE Unl...Samsung Galaxy A21S 32GB 6.5" 4G LTE Unlocked, Blue
Amazon logo
$179.00
Samsung Galaxy A21s AmazonSamsung Galaxy A21S 32GB 6.5" 4G LTE Unl...Samsung Galaxy A21S 32GB 6.5" 4G LTE Unlocked, Black
Amazon logo
$179.00
Samsung Galaxy A21s AmazonSamsung Galaxy A20s A207M 32GB DUOS GSM ...Samsung Galaxy A20s A207M 32GB DUOS GSM Unlocked Phone (International Variant/US Compatible LTE) - Black
Amazon logo
$157.00
Samsung Galaxy A21s AmazonSamsung Galaxy A51 (SM-A515F/DS) Dual SI...Samsung Galaxy A51 (SM-A515F/DS) Dual SIM 128GB, GSM Unlocked - Prism Crush Black
Amazon logo
$267.99
Samsung Galaxy A21s aliexpressGlobal Samsung Galaxy A21s A217F/DS 4GB ...Global Samsung Galaxy A21s A217F/DS 4GB 64GB Mobile Phone 5000mAh Octa core 6.5" Quad Camera 48MP Dual SIM 4G Android Smartphone
aliexpress logo
$178.28
Samsung Galaxy A21s walmartTracfone SAMSUNG Galaxy A01, 16GB Black ...Tracfone SAMSUNG Galaxy A01, 16GB Black - Prepaid Smartphone
walmart logo
$9.99

Samsung Galaxy A31

ProductStorePrice
Samsung Galaxy A31 AmazonSamsung Galaxy A31-128GB / 4GB - A315G/D...Samsung Galaxy A31-128GB / 4GB - A315G/DSL Unlocked Dual Sim Phone w/Quad Camera 48MP+8MP+5MP+5MP GSM International Version (Prism Crush Black)
Amazon logo
$229.00
Samsung Galaxy A31 AmazonSamsung Galaxy A31 64GB / 4GB - A315G/DS...Samsung Galaxy A31 64GB / 4GB - A315G/DSL Unlocked Dual Sim Phone w/Quad Camera 48MP+8MP+5MP+5MP GSM International Version (Prism Crush White)
Amazon logo
$217.99
Samsung Galaxy A31 AmazonSamsung Galaxy A51 (128GB, 4GB) 6.5", 48...Samsung Galaxy A51 (128GB, 4GB) 6.5", 48MP Quad Camera, Dual SIM GSM Unlocked A515F/DS- Global 4G LTE International Model - Prism Crush Blue
Amazon logo
$267.99
Samsung Galaxy A31 AmazonSamsung Galaxy A71 (SM-A715F/DS) Dual SI...Samsung Galaxy A71 (SM-A715F/DS) Dual SIM 4G LTE 128GB, GSM Factory Unlocked - International Version - No Warranty - Blue
Amazon logo
$347.99
Samsung Galaxy A31 aliexpressGlobal Version Samsung Galaxy A31 A315G/...Global Version Samsung Galaxy A31 A315G/DS Mobile Phone 6GB RAM 128GB ROM Octa Core 6.4"1080x2400 5000mAh 4Camera NFC Android 10
aliexpress logo
$236.54
Samsung Galaxy A31 walmart[8-Pack] For Samsung Galaxy A31 - SuperG...[8-Pack] For Samsung Galaxy A31 - SuperGuardZ Screen Protector, Ultra Clear, Anti-Scratch, Anti-Bubble
walmart logo
$6.99

Design

1.weather-sealed (splashproof)
Samsung Galaxy A21s
Samsung Galaxy A31
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
2.weight

192g

185g

We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
3.thickness

8.9mm

8.6mm

We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
4.width

75.3mm

73.1mm

The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
5.height

163.6mm

159.3mm

The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
6.volume

109.64cm³

100.15cm³

Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.

Display

1.pixel density

270ppi

411ppi

Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
2.resolution

720 x 1600px

1080 x 2400px

Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
3.screen size

6.5"

6.4"

The bigger the screen size is, the better the user experience.
4.has branded damage-resistant glass
Samsung Galaxy A21s
Samsung Galaxy A31
Damage-resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
5.Has an OLED or AMOLED display
Samsung Galaxy A21s
Samsung Galaxy A31
OLED (Organic Light-Emitting Diode) displays are formed of organic materials that emit light. They have higher contrast ratios and wider viewing angles compared to LCDs. AMOLED and POLED are types of OLED displays.
6.has a touch screen
Samsung Galaxy A21s
Samsung Galaxy A31
You can operate the device easily, by pressing the screen with your fingers.

Performance

1.CPU speed

4 x 2GHz & 4 x 2GHz (Samsung Exynos 850)

2 x 2GHz & 6 x 1.95GHz (MediaTek Helio P65)

The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
2.RAM

6GB

6GB

Random-access memory (RAM) is a form of volatile memory used to store working data and machine code currently in use. It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.
3.has an external memory slot
Samsung Galaxy A21s
Samsung Galaxy A31
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.
4.internal storage

64GB

128GB

The internal storage refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
5.Has integrated LTE
Samsung Galaxy A21s (Samsung Exynos 850)
Samsung Galaxy A31 (MediaTek Helio P65)
The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.
6.semiconductor size
Small semiconductors provide better performance and reduced power consumption. Chipsets with a higher number of transistors, semiconductor components of electronic devices, offer more computational power. A small form factor allows more transistors to fit on a chip, therefore increasing its performance.

Cameras

1.megapixels (main camera)

48MP & 8MP & 2MP & 2MP

48MP & 8MP & 5MP & 5MP

The number of megapixels determines the resolution of the images captured with the main camera. A higher megapixel count means that the camera is capable of capturing more details. However, the megapixel count is not the only important element determining the quality of an image.
2.megapixels (front camera)

13MP

20MP

The number of megapixels determines the resolution of the images captured with the front camera. A higher megapixel count means that the front camera is capable of capturing more details, an essential factor for taking high-resolution selfies.
3.has built-in optical image stabilization
Samsung Galaxy A21s
Samsung Galaxy A31
Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.
4.video recording (main camera)

1080 x 30fps

1080 x 30fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.
5.wide aperture (main camera)

f/2 & f/2.2 & f/2.4 & f/2.4

f/2 & f/2.2 & f/2.4 & f/2.4

With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.
6.Has a dual-tone LED flash
Samsung Galaxy A21s
Samsung Galaxy A31
A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.

Audio

1.has stereo speakers
Samsung Galaxy A21s
Samsung Galaxy A31
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
2.has a socket for a 3.5 mm audio jack
Samsung Galaxy A21s
Samsung Galaxy A31
With a standard mini jack socket, you can use the device with most headphones.
3.Has a radio
Samsung Galaxy A21s
Samsung Galaxy A31
A built-in FM radio tuner allows you to listen to most of the live-broadcasted FM radio stations without using the internet.
4.number of microphones

2

2

More microphones result in better sound quality and enable the device to filter out background noise.

Battery

1.battery power

5000mAh

5000mAh

Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
2.has wireless charging
Samsung Galaxy A21s
Samsung Galaxy A31
The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
3.has a removable battery
Samsung Galaxy A21s
Samsung Galaxy A31
The battery is removable and can be replaced by the user if broken.
4.Supports fast charging
Samsung Galaxy A21s
Samsung Galaxy A31
Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.
5.Has an ultra power-saving mode
Samsung Galaxy A21s (Android 10)
Samsung Galaxy A31 (Android 10)
The ultra power-saving mode, also called low power mode, is an effective way to extend the battery life of the device. Usually, it involves limiting screen brightness and contrast, disabling location services, restricting connectivity, and turning off nonessential apps.
6.has a battery level indicator
Samsung Galaxy A21s
Samsung Galaxy A31
An indicator shows you when the device has low battery.

Features

1.supports Wi-Fi 5 (802.11ac)
Samsung Galaxy A21s
Samsung Galaxy A31
802.11ac wireless works on the 5GHz frequency range. It offers higher transfer rates, improved reliability, and improved power consumption. It provides advantages for gaming and HD video streaming.
2.has NFC
Samsung Galaxy A21s
Samsung Galaxy A31
NFC (near-field communication) allows a device to perform simple wireless transactions.
3.Has a fingerprint scanner
Samsung Galaxy A21s
Samsung Galaxy A31
The device has a fingerprint scanner which identifies the user.
4.is DLNA-certified
Samsung Galaxy A21s
Samsung Galaxy A31
All DLNA-certified products are compatible with one another. When different devices are connected to the same network, data can be transferred easily between them.
5.Bluetooth version

5

5

Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
6.supports two SIM cards
Samsung Galaxy A21s
Samsung Galaxy A31
A dual-SIM mobile phone can work with two SIM cards at the same time.

Price comparison

Samsung Galaxy A21s

ProductStorePrice
Samsung Galaxy A21s AmazonSamsung Galaxy A21S SM-A217M/DS 4G LTE 6...Samsung Galaxy A21S SM-A217M/DS 4G LTE 64GB + 4GB Ram LTE USA w/Four Cameras (48+8+2+2mp) Android International Version (GSM Only, Not CDMA) (Blue)
Amazon logo
$189.99
Samsung Galaxy A21s AmazonSamsung Galaxy A21S 32GB 6.5" 4G LTE Unl...Samsung Galaxy A21S 32GB 6.5" 4G LTE Unlocked, Blue
Amazon logo
$179.00
Samsung Galaxy A21s AmazonSamsung Galaxy A21S 32GB 6.5" 4G LTE Unl...Samsung Galaxy A21S 32GB 6.5" 4G LTE Unlocked, Black
Amazon logo
$179.00
Samsung Galaxy A21s AmazonSamsung Galaxy A20s A207M 32GB DUOS GSM ...Samsung Galaxy A20s A207M 32GB DUOS GSM Unlocked Phone (International Variant/US Compatible LTE) - Black
Amazon logo
$157.00
Samsung Galaxy A21s AmazonSamsung Galaxy A51 (SM-A515F/DS) Dual SI...Samsung Galaxy A51 (SM-A515F/DS) Dual SIM 128GB, GSM Unlocked - Prism Crush Black
Amazon logo
$267.99
Samsung Galaxy A21s aliexpressGlobal Samsung Galaxy A21s A217F/DS 4GB ...Global Samsung Galaxy A21s A217F/DS 4GB 64GB Mobile Phone 5000mAh Octa core 6.5" Quad Camera 48MP Dual SIM 4G Android Smartphone
aliexpress logo
$178.28
Samsung Galaxy A21s walmartTracfone SAMSUNG Galaxy A01, 16GB Black ...Tracfone SAMSUNG Galaxy A01, 16GB Black - Prepaid Smartphone
walmart logo
$9.99

Samsung Galaxy A31

ProductStorePrice
Samsung Galaxy A31 AmazonSamsung Galaxy A31-128GB / 4GB - A315G/D...Samsung Galaxy A31-128GB / 4GB - A315G/DSL Unlocked Dual Sim Phone w/Quad Camera 48MP+8MP+5MP+5MP GSM International Version (Prism Crush Black)
Amazon logo
$229.00
Samsung Galaxy A31 AmazonSamsung Galaxy A31 64GB / 4GB - A315G/DS...Samsung Galaxy A31 64GB / 4GB - A315G/DSL Unlocked Dual Sim Phone w/Quad Camera 48MP+8MP+5MP+5MP GSM International Version (Prism Crush White)
Amazon logo
$217.99
Samsung Galaxy A31 AmazonSamsung Galaxy A51 (128GB, 4GB) 6.5", 48...Samsung Galaxy A51 (128GB, 4GB) 6.5", 48MP Quad Camera, Dual SIM GSM Unlocked A515F/DS- Global 4G LTE International Model - Prism Crush Blue
Amazon logo
$267.99
Samsung Galaxy A31 AmazonSamsung Galaxy A71 (SM-A715F/DS) Dual SI...Samsung Galaxy A71 (SM-A715F/DS) Dual SIM 4G LTE 128GB, GSM Factory Unlocked - International Version - No Warranty - Blue
Amazon logo
$347.99
Samsung Galaxy A31 aliexpressGlobal Version Samsung Galaxy A31 A315G/...Global Version Samsung Galaxy A31 A315G/DS Mobile Phone 6GB RAM 128GB ROM Octa Core 6.4"1080x2400 5000mAh 4Camera NFC Android 10
aliexpress logo
$236.54
Samsung Galaxy A31 walmart[8-Pack] For Samsung Galaxy A31 - SuperG...[8-Pack] For Samsung Galaxy A31 - SuperGuardZ Screen Protector, Ultra Clear, Anti-Scratch, Anti-Bubble
walmart logo
$6.99

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