Samsung Galaxy M21

10 / 10 based on 2 reviews
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Samsung Galaxy M21 (M215)
Samsung Galaxy M21 black front left side
Samsung Galaxy M21 blue back
Samsung Galaxy M21 black front right side
Samsung Galaxy M21 black left side
Samsung Galaxy M21 black back
Samsung Galaxy M21 black bottom
Samsung Galaxy M21 black overview
Samsung Galaxy M21 black right side
Samsung Galaxy M21 black top
Samsung Galaxy M21 green back

Samsung Galaxy M21 reviews

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Samsung Galaxy M21 product description

The Samsung Galaxy M21 is a mid-ranger from Samsung's M-series. M-models are known for their large battery. Whether that is also true for this M21 is something we are going to find out. And then we will immediately look at all its other plus and minus points.

Plastic housing, large battery

The housing of the Galaxy M21 is streamlined with rounded glass and a glossy finish. In other words, the M21 lies comfortably in the hand without sharp corners. This is a plastic housing, also known as polycarbonate. This has the advantage that it is reasonably strong and never feels cold to the touch. This is of course convenient during a cold winter, but it is usually found to be less premium than, for example, metal or glass. Samsung has done this in order to keep the costs as low as possible. Now Samsung has phones in its assortment that are cheaper, so it is more likely that Samsung has put that money into other things. A larger battery for example. The one in the M21, with a capacity of 6000 mAh, is very large. A battery life of 2 days is therefore certainly feasible.

Samsung Galaxy M21 black overview

Triple Camera with 4K video

Samsung has further equipped the Galaxy M21 with a more than 6.4 inch screen. They themselves call it an 'Infinity-U Display'. That 'U' is a reference to the u-shaped notch for the 20MP selfie camera. That is spacious enough for sharp self-portraits. There's even a Live Focus function with which you can add a blurry background to your selfies. Your selfies stand out more and generally look better. On the back there are 3 more cameras; a 48MP main camera with lots of detail, 8MP ultra wide angle lens with 123° angle of view and a 5MP depth camera. Thanks to this Triple Camera you have enough resources in hand to take beautiful pictures. Videos can be shot in a maximum 4K resolution and there is a slow-motion option of 240fps.

Main Samsung Galaxy M21 specifications

  • 6.4-inch large Infinity-U Display with Super AMOLED FHD+ panel
  • Triple Camera with 48 + 8 + 5 MP sensor (main camera + ultra-wide camera + depth camera) and 4K video
  • 20MP selfie camera at the top in U-shaped notch
  • 6000mAh large battery with 15 Watts fast charging
  • Octacore processor with 4 GB RAM and 64 GB storage
  • Unlock with fingerprint scanner on the back or face recognition on the front
  • Dual SIM slot + memory card slot (up to 512 GB)

Game Booster

The Samsung Galaxy M21 runs under its own chipset; the Exynos 9611 on a maximum clock frequency of 2.3 GHz. This is an octa-core processor, i.e. consisting of 8 cores. Combined with 4 GB of RAM memory, this is enough for every-day activities. Gaming will also be possible but don't expect miracles. Samsung did add a special feature called Game Booster. Once activated, it monitors the temperature and memory usage and adjusts the settings accordingly. Game Booster can also disable notifications and Bixby so that they do not bother you during gaming. Finally, the storage memory is 64 GB and can be expanded by up to 512 GB via a memory card. More than enough for all your content.

Samsung Galaxy M21 specification summary

Dimensions 159 x 75,1 x 8,9 mm
Weight 188 gr
Product code SM-M215
EAN code 8806090494925, 8806090486821, 8806090486807, 8806090485879, 8806090485862, 8806090472602, 8806090472596, 8806090472572
Fingerprint recognition
Operating system
Android 9.0 (Pie)
Colour display 6.4 inch, Infinity U Full HD+, notch
Camera 48 MP, 5 MP, 8 MP
Front camera 20 MP
Processor Samsung Exynos 9611, octa core
Dual SIM
Data network
4G (LTE)
Build-in memory
Internal memory 64 GB (Storage)
Power supply
Battery 6000 mAh
Fast charging

All Samsung Galaxy M21 specifications

Videos about the Samsung Galaxy M21

This YouTuber would rather go for the Samsung Galaxy M21 than the M11. She has her reasons for doing so, as she explains. But the M21 is also a bit more expensive than the M11. In other words; pros and cons

Samsung introduces the Galaxy M21; a phone with gigantic battery, colourful and sharp screen and a 48MP triple camera

Samsung Galaxy M21 alternatives

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Product images at scale
Samsung Galaxy M21 (M215)
Samsung Galaxy M32
Huawei P30 lite
OnePlus 7 Pro
OnePlus 8 Pro

Photos at scale

 Current product    
Fingerprint recognition
Android9.0 (Pie)109.0 (Pie)
Colour display6.4 inch, Infinity U Full HD+, notch6.4 inch, Super AMOLED Infinity-O Display, hole-punch display6.15 inch, FullView IPS FHD+, notch6.67 inch, Fluid AMOLED6.78 inch, Fluid AMOLED, hole-punch display
Camera48 MP, 5 MP, 8 MP2 MP, 2 MP, 64 MP, 8 MP2 MP, 48 MP, 8 MP16 MP, 48 MP, 8 MP48 MP, 48 MP, 5 MP, 8 MP
Front camera20 MP20 MP24 MP16 MP16 MP
ProcessorSamsung Exynos 9611, octa coreMediaTek Helio G80, octa core1.7 GHz, 2.2 GHz, HiSilicon Kirin 710, octa core2.84 GHz, Qualcomm Snapdragon 855, octa core1.8 GHz, 2.42 GHz, 2.84 GHz, Qualcomm Snapdragon 865, octa core
Dual SIM
4G (LTE)
Internal memory64 GB (Storage)128 GB (Storage), 64 GB (Storage)128 GB (Storage)128 GB (Storage), 256 GB (Storage)128 GB (Storage), 256 GB (Storage)
Battery6000 mAh6000 mAh3340 mAh4000 mAh4510 mAh
Fast charging

Complete comparison between the Samsung Galaxy M21 and these alternatives or compare with other models

FAQs about the Samsung M21