Written by Jesper

Compare the Samsung Galaxy M31 to the M21

The Samsung Galaxy M31 and M21 look alike. When we look on the insde, it becomes clear why the Samsung M31 is ranked higher in the Samsung M series. This smartphone clearly has a better camera, and is faster in use. In this article, we'll tell you more about the similarities and differences between these mobile phones.

Samsung Galaxy M31

Gratis databundel t.w.v. € 45,-
64GB storage capacity | 6.4-inch Full HD screen | Android 10
temporarily sold out
  • You take better photos with multiple cameras.
  • With the large 6000mAh battery, your smartphone won't run out of battery quickly.
  • Rarely slows down during daily use.
  • It's difficult to operate with just one hand if your hands are small.

Samsung Galaxy M21

64GB storage capacity | 6.4-inch Full HD screen | Android 10
no longer available
  • With the large 6000mAh battery, your smartphone won't run out of battery quickly.
  • Rarely slows down during daily use.
  • Your photos aren't as nice as with the Samsung M31.
  • It's difficult to operate with just one hand, if your hands are small.

Comparison between the Samsung Galaxy M31 and the Samsung Galaxy M21

Samsung M31 Samsung M21
Camera quality Standard Mediocre
Speed class Good Good
Screen 6.4 inches Full HD 6.4 inches Full HD
Battery capacity 6000mAh 6000mAh


Samsung M31 vs Samsung M21 camera

Samsung M31: average photos

The photos you take with the Samsung M31 are great photos to share on your Facebook timeline. This phone has an 8-megapixel wide-angle lens, in addition to the 64-megapixel standard camera. This makes it possible to fit large buildings and wide landscapes completely in one photo. The macro lens helps you to take sharp photos of objects that are only centimeters away from you. Also, the 32-megapixel camera in the front takes great selfies.

Samsung M21 or Samsung M31 photos

Samsung M21: worse cameras, especially in low light

The cameras of the Samsung M21 are significantly less. The 48-megapixel camera has a smaller aperture and smaller image sensor. Especially in photos taken in little light you'll see less detail. The photos aren't as sharp when you print them. The 8-megapixel wide-angle lens is exactly the same as the one on the Samsung M31. The 20-megapixel camera in the front takes decent photos, but when there's little light, they'll quickly become less sharp.


Samsung M31 vs M21 speed

Samsung M31: suitable for daily use, 64GB storage

The Exynos 9611 processor makes the Samsung Galaxy M31 suitable for average use. When you scroll through social media, watch a movie on YouTube, or play a simple game like Wordfeud, the phone works fine. You easily switch between different apps, thanks to the 6GB RAM. The 64GB storage isn't very large. Do you keep lots of photos, movies, and music on your smartphone? Expand the storage of the M31 with a memory card.

Samsung M21 or M31 processing power

Samsung M21: same processor, less RAM

The Samsung M21 is almost as good as the M31, performance wise. The smartphone has the same Exynos 9611 processor, so you use the M21 for similar tasks. The 4GB RAM is a little smaller. The smartphone can handle less apps and tasks in the background. So, switching between apps can take a little longer. This doesn't take more than a second. As with the M31, you can expand the 64GB storage with a memory card.

Battery, screen and size

Samsung M31 or Samsung M21 screen battery

Samsung M31: large battery, 6.4-inch Full HD screen

The 6000mAh battery is remarkably large compared to other smartphones. Your mobile phone easily lasts a day and a half. You quickly charge the M31 with the included charger. This phone has a 6.4-inch screen. When your hands are small, it's hard to operate the entire screen with just one hand. Thanks to the Full HD resolution, the device is suitable for watching movies and series.

Samsung M21 vs M31 battery screen

Samsung M21: same battery and screen

The large 6000mAh battery is equal to the one of the M31. This battery is suitable for the Samsung Adaptive Fast Charge as well. You quickly charge the device with the included charger. Both the screen size and quality of the M21 are equal to those of the M31. Keep in mind that it's hard to operate this device with just one hand as well, if you have small hands. Do you prefer a device with a smaller screen? Read our comparison between the Samsung A41 and the Samsung M21.


The biggest difference between the Samsung M31 and the M21 is the cameras. The camera of the Samsung M31 is a lot more advanced. You notice the difference in settings with low light or when you print your photos. Both smartphones are suitable for daily use, but thanks to the larger RAM, the M31 is slightly faster. The Samsung Galaxy M31 and M21 are equal when it comes to screen, size and battery.

Article by:
Jesper Smartphone Expert.

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