Comparison: Samsung Galaxy M21s or M51; Which one is the best? | Cell

THE Galaxy M21s it’s the Galaxy M51 are intermediary smartphones from Samsung announced in Brazil in November 2020. Cell phones stand out for their large battery capacity, 6,000 mAh and 7,000 mAh respectively. However, there are differences in technical data that can make all the difference when deciding which model is ideal for your daily life. Find out what they are next.

Comparative: Galaxy M21s or M51

Comparison: Galaxy M21s or Galaxy M51 (Image: Vitor Pádua / Tecnoblog)

Galaxy M21s vs Galaxy M51 – Specs

Samsung Galaxy M21s Samsung Galaxy M51
Launch November 2020 November 2020
Launch price R $ 1,699 R $ 2,899
Screen 6.4 inch Super AMOLED (Full HD +) 6.7 inch Super AMOLED Plus (Full HD +)
Processor Exynos 9611 Snapdragon 730G
Operational system Android 10 Android 10
RAM memory 4 GB 6 GB
Storage 64 GB (expandable via microSD up to 512 GB) 128 GB (expandable via microSD up to 512 GB)
Back camera
  • 64 MP (f / 1.8)
  • 8 MP (f / 2.2) ultrawide
  • 5 MP (f / 2.2) depth
  • 64 MP (f / 1.8)
  • 12 MP (f / 2.2) ultrawide
  • 5 MP (f / 2.4) macro
  • 5 MP (f / 2.4) depth
Video 4K @ 30 fps 4K @ 30 fps
Frontal camera 32 MP (f / 2.0) 32 MP (f / 2.2)
Drums 6,000 mAh 7,000 mAh
Dimensions (mm) 159.2 x 75.1 x 8.9 mm 163.9 x 76.3 x 9.5 mm
Weight 191 grams 213 grams

Super AMOLED screens and attractive design

The Galaxy M21s and Galaxy M51 have great panels for the middle segment. Both have Full HD + resolution and Super AMOLED technology. The setting provides good image sharpness, vivid colors and excellent contrast. In addition, this type of screen uses less energy, which helps with battery life.

For those who have smaller hands or prefer to use with one hand, the Galaxy M21s tends to be more comfortable, since its display is 6.4 inches. The M51 has a 6.7-inch panel, which will please users who love big-screen phones to watch movies and series or run games.

Samsung Galaxy M21s (Image: Darlan Helder / Tecnoblog)

Samsung Galaxy M21s (Image: Darlan Helder / Tecnoblog)

Moving on to design considerations, both are coated with plastic, and have rear cameras arranged in a rectangular frame. However, the Galaxy M51 manages to pass even more premium air with its discreet circular hole to the front camera, instead of a drop notch on the screen. In addition, the fingerprint sensor is positioned on the on / off button on the side, while the M21s is on the back of the phone.

Samsung Galaxy M51 (Image: André Fogaça / Tecnoblog)

Samsung Galaxy M51 (Image: André Fogaça / Tecnoblog)

Cameras up to 64 megapixels

Both Samsung phones have a 64 MP main sensor along with a lens with an f / 1.8 aperture. In relation to the Galaxy M21s, the practical tests of Tecnoblog made by Darlan Helder reveal images with a good level of detail and controlled noise even in adverse scenarios, such as on a cloudy day, for example. The M51 also delivered very satisfactory results with the main camera, according to the review by André Fogaça, with emphasis on the night mode.

At ultrawide, we have differences between the sensors, going from one with 8 MP (f / 2.2) on the M21s to another with 12 MP (f / 2.2) on the Galaxy M51. In practice, we have photos with more distorted edges in the most basic model, as well as a higher level of noise, which is not something extremely disappointing for most ordinary users, especially in scenes with good lighting. The Galaxy M51 does better in ultra wide angle photos, although it still provides some level of distortion at the edges.

Moving on to the depth sensor, responsible for the background blur in the “Dynamic Focus” effect (the popular portrait mode), we have the same resolution: 5 megapixels. However, the M51 has a smaller aperture (f / 2.4). In more complex scenarios, the Galaxy M21s can get confused when cropping the background and applying the blur, but in other environments it performs convincingly.

The macro lens is an exclusive feature of the Galaxy M51, but it shouldn’t be much needed for the Galaxy M21s, as it is a very specific camera option, and it doesn’t even deliver such a good resolution. In addition, whoever chooses the M51 will be able to make some images with a very close focus to post on social networks, but don’t expect much more than that with the 5 MP sensor.

For selfies, we have a 32 MP front sensor on both phones. They deliver good dynamic range and satisfactory contrasts, without exaggerating skin smoothing (which is great for those who don’t want to look like a wax figure in the photo). The portrait mode also does a nice job, considering that we only have one lens and we are talking about intermediate phones.

The videos on both devices can be made in a resolution of up to 4K at 30 frames per second with the main camera. At the front, the M51 records at 4K @ 30 fps, but the M21s only reaches 1080p @ 30 fps.

Hardware and battery

Here, cell phones move a little bit apart – the Galaxy M21s consolidates itself more as an intermediary with the Exynos 9611 processor + 4 GB of RAM, while the Galaxy M51 moves to a premium intermediate level with the Snapdragon 730G + 6 GB of RAM.

In Tecnoblog tests, the M51 did very well when playing games like Asphalt 9 and Genshin Impact, the latter with occasional drop in fps, but nothing too worrying. Performance is close to what we see in high-end cell phones of the past generation, for example.

Samsung Galaxy M21s (Image: Darlan Helder / Tecnoblog)

In turn, the Galaxy M21s runs most day-to-day applications well, with good task management in the background. For those who enjoy gambling on cell phones, this device can provide good moments of relaxation, despite not having a chip developed for the gamer audience. Here, Asphalt 9 ran with occasional gagging, but with reduced graphic details, you get a nice experience.

In storage, we have 64 GB for the Galaxy M21s and 128 GB for the Galaxy M51, both with a microSD card slot up to 512 GB.

Samsung Galaxy M21s (Image: Darlan Helder / Tecnoblog)

Moving on to the battery – which is, in fact, the great shine of these models – we have autonomy to give and sell. In both cases the results were spectacular, using at least two days, until a refill was needed. For those who don’t even use their smartphones that much (which can be more common in quarantine times), you can get to a third day away from the outlets.

Battery consumption of Galaxy M51 (Image: André Fogaça / Tecnoblog)

If you have been following the controversy of chargers that no longer come with smartphones, you can rest assured, because these two phones still have the plug adapters.

But there are differences beyond capacity: the Galaxy M21s comes with a 15-watt adapter, which takes about 2h40min to fully charge the 6,000mAh battery, starting from scratch. In the case of the M51, which has 7,000 mAh, Samsung was generous to include a 25-watt charger, which provides a full charge in two hours or 30% in half an hour.

Galaxy M21s or M51: which one is more cost-effective?

To decide between the phones, it is worth considering your usage profile and how much you are willing to pay for a smartphone. The Galaxy M21s was launched for R $ 1,699, but it is already found in the range of R $ 1,300, which is a very aggressive price if we consider all its configurations.

Samsung Galaxy M21s (Image: Darlan Helder / Tecnoblog)

Samsung Galaxy M21s (Image: Darlan Helder / Tecnoblog)

The Galaxy M51 was announced for R $ 2,899, and is now sold for about R $ 2 thousand in electronic retail. It is a valid price for those who would like to have a more advanced smartphone and need high performance, but can not spend so much on high-end devices (after all, not everyone has R $ 6 thousand left for a Galaxy S21, right? ).

For most ordinary users, the Galaxy M21s is the option that delivers the best value for money right now. If you are not keen on a macro camera and games are not a super priority, go for it!

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