Samsung Galaxy S21 5G review

Read our full review to find out how the Samsung Galaxy S21 5G differs, what our opinion of it is and whether it's worth the money.
Added by on 01.15.21 | Last update 01.18.22
Samsung Galaxy S21 5G ревю
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4.06 / 5


In early 2021, Samsung introduced its new Galaxy S series, whose representatives are three models - S21, S21+ and S21 Ultra. Among them, the most budget solution is the Galaxy S21. It is noticeable that his company has paid attention to him, but do not expect serious changes. The smartphone has a refreshed design and a new platform.

Before reading the full review, you can familiarize yourself with the detailed Samsung Galaxy S21 5G specs or watch the video below the article.


  • Release date: 2021, January 14
  • Colors: Phantom Gray, Phantom White, Phantom Violet, Phantom Pink
  • Dimensions: 151.7 x 71.2 x 7.9 mm.
  • Weight: 169 g.
  • Screen: 6.2" inc, 1080 x 2400, Dynamic AMOLED 2X
  • Camera : Triple, 12MP
  • Chipset: Exynos 2100 (5 nm)
  • CPU: Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
    Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China
  • Memory: 128GB 8GB RAM, 256GB 8GB RAM
  • Battery: 4000, Li-Ion, non-removable
  • Network: GSM / CDMA / HSPA / EVDO / LTE / 5G
  • Operating system: Android 11, One UI 3.1
  • Sensors: Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer


One of the main innovations in the Galaxy S21 is the design. The corners of the display are slightly rounded, in place of the old camera unit there is another. The appearance of the smartphone is modern and fresh. Intriguing at first sight. The frames smoothly surround the screen.

Pay attention to the plastic back panel of the Galaxy S21. Traditionally, devices in this class rely on metal, but this is not the case with the base model of the new generation Galaxy S. The back is matte and pleasant to the touch.

As dimensions Galaxy S21 offers comfort. Its dimensions are 151.7 x 71.2 x 7.9 mm with a weight of only 172 grams. This device will be super comfortable for anyone with smaller palms.


The smartphone has a 6.2-inch display, FHD+ and AMOLED 2X Infinity-O. Although it is the most compact of its generation, you can enjoy a quality picture. It is convenient for watching videos and reading. The display has excellent color rendering and high brightness. You can include a dark theme for convenience.

The screen of the Galaxy S21 supports adaptive vision protection mode. It's called the Eye Comfort Shield. Blue filtering is done automatically - depending on the content you use.


Galaxy S21 has an Exynos 2100 chip, based on a 5-nm process technology. It is characterized by high energy efficiency and ensures smooth operation of the system and applications. It is also equipped with a 5G modem and uses neural networks to work with artificial intelligence.

Samsung's new processor is 10% more powerful and 20% more energy efficient than its predecessor. It includes 8 cores clocked at up to 2.9 GHz and an Arm Mali G78 video chip.

In addition, we must point out that the Galaxy S21 is equipped with 8 GB of RAM and 128/256 GB of internal storage. No expansion with memory card is provided.


The most interesting thing in this flagship model of Samsung are its photographic capabilities. Galaxy S21 has the best sensors and new image processing technology. The device supports zooming up to 30 times and can shoot 8K video.

In addition, the Galaxy S21 has a basic 12-megapixel sensor with an aperture of f1.8, a 12-megapixel ultra-wide sensor, a 64-megapixel telephoto lens with triple optical zoom and an aperture of f2.0, and a 10-megapixel front sensor.

The smartphone will attract attention with its automatic mode, with which you can take quality shots effortlessly. No need to adjust anything. Just push the button. This nice feature is the result of an advanced AI processing system.

Galaxy S21 supports Space Zoom technology, which allows you to take photos at 30x magnification. In addition, the user gets the opportunity to create their own filters.

With the advent of this generation of flagships, the portrait mode is now called "Portrait". It allows you to adjust the type of lighting, adjust the smoothness of the skin and blur the background. Artificial intelligence does an excellent job of defining the faces in photos and capturing them. In this mode, you can shoot even distant objects and people.

Although the night mode in the Galaxy S20 is perfect, in the new generation - Galaxy S21, Samsung claims that it has been improved.

The front camera of the smartphone works perfectly. It is equipped with autofocus, background blur adjustment, a bunch of filters and retouching. The device supports "Multi-frame" mode, in which you create photos with all cameras and in all modes at the touch of a button. So in the end it is up to you to decide which shot is the best.

When shooting video, the Galaxy S21 offers a maximum resolution with the main camera 8K at 24 frames per second. The front camera records video in 4K at 60 frames per second. You get Cinema mode, where you can shoot with both the front and main cameras, switching smoothly between them.

Autonomous work

Galaxy S21 is equipped with a battery with a capacity of 4000 mAh. Even singing a normal load you can rely on it around the clock. The full charge can be exhausted by constantly surfing the Internet for 16 hours. Galaxy S21 supports fast charging technology with power up to 25 watts.


The base Galaxy S21 is the golden mean in its series. Its screen is large enough, the cameras are high quality, the memory is ample, and the performance is at a modern flagship level.

Samsung Galaxy S21 5G video review

Disclaimer: The information presented in this article is based on our team's personal experience with the Samsung Galaxy S21 5G and third-party sources. While every effort has been made to provide accurate and reliable information, readers should keep in mind that this is a subjective assessment. The writing of this article was not paid for or sponsored by Samsung.

Richard Taylor

Richard Taylor

Richard Taylor is a technology expert and journalist based in the UK. With a degree in Computer Science from the University of Birmingham, he provides insightful analysis and expert reviews of the latest smartphones and technology. His technical expertise, passion for technology and years of experience make him a trusted source in the industry.

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