October 14, 2021



m21 review

Samsung M21 Review


Samsung M21 Full Specifications


ModelGalaxy M21
Release date18th March 2020
Launched in IndiaYes
Form factorTouchscreen
Weight (g)188.00
Battery capacity (mAh)6000
Removable batteryNo
Fast chargingProprietary
Wireless chargingNo
ColoursBlack, Midnight Blue, Raven Black


Screen size (inches)6.40
Resolution2340×1080 pixels
Protection typeGorilla Glass
Aspect ratio19.5:9


Processor1.7GHz octa-core (4×1.7GHz + 4×2.3GHz)
Processor makeSamsung Exynos 9611
Internal storage64GB
Expandable storageYes
Expandable storage typemicroSD
Expandable storage up to (GB)512


Rear camera48-megapixel + 8-megapixel + 5-megapixel
Rear autofocusYes
Rear flashYes
Front camera20-megapixel
Front flashNo


Operating systemAndroid 10
SkinOne UI 2.0


Wi-Fi standards supported802.11 a/b/g
USB Type-CYes
Number of SIMs2
SIM TypeNano-SIM
4G/ LTEYes
Supports 4G in India (Band 40)Yes
SIM TypeNano-SIM
4G/ LTEYes
Supports 4G in India (Band 40)Yes


Face unlockYes
Fingerprint sensorYes
Compass/ MagnetometerYes
Proximity sensorYes
Ambient light sensorYes
samsung m21

Samsung M21 Design

Samsung makes phones in the Galaxy M series to keep its costs down. The Samsung M21 was made for the mid-budget lineup. It has a glossy finish with a plastic back. Fingerprints are very fast and pickups very easily. You won’t get a protective case in the box, so you’ll have to purchase the case in order to keep the device safe..

Samsung Galaxy M21 is the successor of the Samsung Galaxy M20 but looks much more like the Galaxy M30s which was launched in 2019. However, you will get only Blue and Black colors in this device.

It has a big display that measures 6.4 inches and has thin bezels at the top and the sides. The chin is quite thicker. At the top, you will get a selfie camera with a waterdrop notch with a tiny earpiece right above it. The screen is big so you can reach the top of the display if you have big hands, else you’ll need to shuffle a little to reach the top.

Volume buttons are positioned a bit too high which is quite annoying for some users.. The power button and the fingerprint scanner are well placed and are easy to reach when using the device single-handed. The device measures 8.9mm in thickness which is due to the big battery. Surprisingly, the device does not feel too bulky in the hand as the sides are curved. The phone weighs at 188g.

Samsung offers a USB Type-C port at the bottom and a 15W charger in the box. You will also get a 3.5mm headphone jack at the bottom along with the loudspeaker and the primary microphone.

Samsung M21 Specifications and Softwares

For selfie, lovers Samsung Galaxy M21 comes with a 20-megapixel selfie camera. The device is running on top of Android 10.

Samsung Galaxy M21 comes with a 6.4-inch AMOLED display with a Full-HD+ resolution. Getting an AMOLED panel in this price range isn’t very common. Viewing angles are also very good. It also gets bright enough outdoors to be visible under sunlight.

Samsung uses the Exynos 9611 SoC again. This is an octa-core processor with four performance ARM Cortex-A73 cores clocked at 2.3GHz and four efficiency Cortex-A53 cores clocked at 1.7GHz. It comes with integrated Mali-G72 graphics. You will get two variants of this device, one with 4GB of RAM and 64GB of storage, and the second one with 6GB of RAM and 128GB of storage. The phone is priced at Rs. 12,699 on Amazon.

This is a dual-SIM smartphone and supports two Nano-SIM slots. You will also get a dedicated microSD card slot for storage expansion. There is support for dual 4G VoLTE, Bluetooth 5, dual-band Wi-Fi, and four satellite navigation systems. Samsung M21 comes with a 6,000mAh battery which is quite big.

The Galaxy M21 runs One UI 2.0 on the latest of the Android. You will get a February security patch. The UI is somewhat similar to the Galaxy M31. While setting up the device you will need to be careful, or Samsung will send you marketing notifications.

We found some preinstalled apps on smartphones, including Amazon, Netflix, Prime Video, Helo, and Dailyhunt. Earlier we have seen that Helo and Dailyhunt are generating spammy notifications, so I would recommend that you uninstall them if you don’t use them. One more thing My Galaxy app will push notifications throughout the day.

Other Features

You will get an Always-on display mode. Dolby Atmos is also available for earphones and Bluetooth headsets. You can also switch to gesture-based navigation instead of the traditional three-button layout. Other features include a Dark Mode, which takes full advantage of the Super AMOLED panel on the Galaxy M21. Samsung has also added a Game Booster feature that can block notifications and provides quick shortcuts for apps of your choice.

samsung m21


Samsung has used Exynos 9611 which is a capable processor and can easily take care of your basic apps without any lag. But sometimes I noticed that heavy apps took some time to load. Multitasking was a breeze and you can easily switch between multiple apps without waiting for them to load all over again.
The fingerprint scanner which is placed at the backside of the device is quick to unlock the phone. You can also get the option of face-unlock which is very fast. What I liked is the AMOLED display of this device which is the best part of the Samsung Galaxy M21 and you can enjoy watching videos on this smartphone. Speaker is tiny, which dampened the overall experience slightly.

It’s the time to play PUBG Mobile on the Samsung Galaxy M21 to see how the phone handles it. The game defaulted to the High settings with graphics set to HD and the frame rate set to High. You will notice some occasional stutter in gameplay which prompted us to drop the graphics quality. After playing the game for 15 minutes the device was slightly warm and we also noticed a 3 2battery drop.

samsung m21

Battery life was excellent. Samsung M21 comes with a 6,000mAh big battery. The phone lasted for two full days of regular use. In the HD video loop test, it managed to last for 21 hours and 48 minutes, but as you already know Samsung phones do automatically reduce brightness once the battery falls below a certain level. It will take approximately 2 hours to fully charge the device. You will get a 15W charger in the box, the device goes to 21 percent in 30 minutes and 42 percent in an hour.

samsung m21

Final Words

The Samsung Galaxy M21 looks a lot like the Samsung Galaxy M30s. Its key specifications are very similar to the older device. The main differences are Android 10 and a higher resolution selfie shooter, but the Galaxy M30s recently got an update to One UI 2.0, in which the selfie camera is pretty much the only differentiator. Surprisingly, the price of Samsung Galaxy M21 lower than the Galaxy M30s. The lower price and the better chance of getting updated to Android 11 at some point tip the scales in the Galaxy M21’s favor.

However, Galaxy M21 is just an average device at this price segment. You can also take a look at competitors such as the Realme 6 and the Redmi Note 9 Pro which offers much more impressive performance and better cameras at nearly the same price.

I will be glad to know if you have any questions regarding this phone or about anything in the comment box below.

Check out my pevious post on Redmi Note 9 Pro Max.