Samsung Galaxy M21 Specs, review, opinions, comparisons

Samsung Galaxy M21 Specs, review, opinions, comparisons
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Samsung Galaxy M21 Top Specs

  • Release Date: 2020, March 18
  • Dimensions: 159 x 75.1 x 8.9 mm
  • Weight: 188 g
  • Screen: 6.4", Super AMOLED
  • Main Camera: Triple, 48 MP
  • Selfi Camera: Single, 20 MP
  • Memory: 64GB 4GB RAM, 128GB 6GB RAM
  • CPU:
  • Battery: 6000 mAh
  • Sensors: Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass

Here you will find everything about the Samsung Galaxy M21

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Technical specifications

General specs
Brand and model Samsung Galaxy M21
Release date 2020, March 18
Dimensions 159 x 75.1 x 8.9 mm (6.26 x 2.96 x 0.35 in)
Weight 188 g (6.63 oz)
Body build Glass front (Gorilla Glass 3), plastic back, plastic frame
Colors Midnight Blue, Raven Black
Battery 6000 mAh,  Non-removable Li-Po
Approximate price160 EUR
Technology Super AMOLED
Touchscreen capacitive touchscreen
Display colors 16M
Screen size 6.4" inc
Screen area 100.5 cm2
Screen format 19.5:9 (height:width)
Screen to body ratio84.2%
Screen resolution 1080 x 2340 px
PPI /points per inch/ 403 PPI
Screen protection Corning Gorilla Glass 3
Other - 420 nits max brightness
Camera and Video
Rear camera, main 48 MP, Triple
Camera specs
-48 MP, f/2.0, 26mm (wide), 1/2.0'', 0.8µm, PDAF
-8 MP, f/2.2, 12mm (ultrawide), 1/4.0'', 1.12µm
-5 MP, f/2.2, (depth)
Functions LED flash, panorama, HDR
Video 2160p@30fps, 1080p@30fps, gyro-EIS
Front camera, selfie 20 MP, Single
Specifications 20 MP, f/2.0, 26mm (wide)
Functions HDR
Video 1080p@30fps
Operating system OS Android 10.0; One UI 2
Chipset - Exynos 9611 (10nm)
Processor CPU
- Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Graphics processor GPU - Mali-G72 MP3
External memory microSDXC (dedicated slot)
Internal memory 64GB 4GB RAM, 128GB 6GB RAM
Antutu 8 score182451
GeekBench 5 Single Core327
GeekBench 5 Multi-Core1210
Communication and Connectivity
SIM card Dual SIM (Nano-SIM, dual stand-by)
Network GSM / HSPA / LTE
Show all network frequencies:
Edge Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB 2.0, Type-C 1.0 reversible connector
Bluetooth 5.0, A2DP, LE
Harmful irradiation
SAR - 0.47 W/kg (head)    
Music and Audio
Radio FM radio, RDS, recording
Headphone jack Yes
Other features
- Sensors - Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
- Fast charging 15W

Samsung Galaxy M21 Video review - click to play

Samsung Galaxy M21 Review

Until a while ago, Samsung had a budget Galaxy J series. Now it's been replaced with the Galaxy M - devices that aren't expensive, feature mid-range processors and basic specs. The Galaxy M21 fits that description. 


The Galaxy M21 is a copy of the M31, but there are quite a few differences with the previous M20 model. Its casing is slightly larger. The dimensions of the Galaxy M21 are 159 x 75.1 x 8.9 mm. The weight is also increased - 188 grams. A distinctive feature of the Galaxy M21 is the three-camera unit. 

The casing is distinguished by the fact that the front side is made of glass and the back cover is made of molded plastic. The entire smartphone has a glossy finish. Due to this, scratches may appear on it over time. We recommend getting a case for it.  


Compared to the M20, the M21 has a slightly larger screen. Its diagonal is now 6.4 inches. The resolution is 2340 x 1080 pixels. The aspect ratio - 19.5:9. The bottom bezel is significantly larger than the others. 

The color rendering of the Super AMOLED display practically coincides with that of the older model. The maximum brightness is 426 cd/sqm. The minimum is 2 cd/sqm. 


For the sake of safety and quick system access, the Galaxy M21 has received a front-facing camera that is tasked with scanning the device owner's face. It works well for her. In the dark, the smartphone slightly increases the brightness level. This helps the unlocking system work smoothly.

The fingerprint scanner also works fast and accurately enough. 


At the heart of the Galaxy M21 lies an 8-core Exynos 9611 processor with a Mali-G72 video accelerator. The user can choose between two versions - 4/64 GB and 6/128 GB. The device works with two SIM cards and a memory card. There is an NFC module. 


Galaxy M21, as already mentioned, has a main camera consisting of three sensors. The main one is 48 MP with an f/2.0 aperture, the auxiliary one is 5 MP with f/2.2 and measures the depth of the scene, and the third one is an ultra-wide 8 MP with f/2.2.

The daytime shots turn out to be of satisfactory quality for this class of phones. 

The Galaxy M21 is capable of recording video up to 4K resolution, but in this case the ultra-wide camera can't be used and image stabilization will be absent. Therefore, it is desirable to shoot in FullHD. 

The selfie camera is 20 MP with an aperture of ƒ/2.2. 

Autonomous operation

The battery capacity of the Galaxy M21 is an impressive 6000 mAh. Considering the other features of the model, the power consumption is similar to that of the M31. Not to be blunt, we immediately give an indicative autonomous operation. In daily use, the battery will discharge after a day or two. Do you rely too much on social networks, messengers, games and heavy applications, keep the charger handy. 

Samsung has introduced fast charging technology on the Galaxy M21. So in just 2 hours and 30 minutes, you'll have a fully recharged phone. 


Samsung Galaxy M21 has changed in a good direction over its predecessor. Its main differences are seen in the cameras, RAM and dimensions. By today's standards, the Galaxy M21 is a good investment for undemanding users. 

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Frequently Asked Questions

The base approximate price of the Samsung Galaxy M21 was around 160 EUR after it was officially announced. At this point, the price may be lower.
The official release date is 2020, March 18.
The weight of the Samsung Galaxy M21 is 188 g.
The screen size of the Samsung Galaxy M21 is 6.4" inches.
The size of the Samsung Galaxy M21 is 159 x 75.1 x 8.9 mm (HxWxD).
No, it does not support 5G
No, it is not waterproof.
Yes, it supports fast charging.
No, it does not support wireless charging.
Yes, it supports the services of Google Play store, gmail, youtube, etc.
There is Triple main camera and Single selfi camera.
To turn on the phone, press and hold the power key until the logo appears on the screen, then release the key. If the phone does not turn on after a few seconds, connect the charger and try again in a minute.
To turn off the phone, press and hold the power button until the power icon appears, then tap the power icon.
To restart the phone, press and hold the volume down key and the power key at the same time until the logo appears on the screen, then release them. This may take up to 30 seconds.
To take a screenshot, press and release the volume down button and the power button at the same time. A thumbnail of the screenshot will appear immediately after that.