Samsung Galaxy A51 Specs, review, opinions, comparisons

Samsung Galaxy A51 Specs, review, opinions, comparisons
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Samsung Galaxy A51 Top Specs

  • Release Date: 2019, December
  • Dimensions: 158.5 x 73.6 x 7.9 mm
  • Weight: 172 g
  • Screen: 6.5", Super AMOLED
  • Main Camera: Quad, 48 MP
  • Selfi Camera: Single, 32 MP
  • Memory: 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
  • CPU:
  • Battery: 4000 mAh
  • Sensors: Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

Here you will find everything about the Samsung Galaxy A51

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Technical specifications

General specs
Brand and model Samsung Galaxy A51
Release date 2019, December
Dimensions 158.5 x 73.6 x 7.9 mm (6.24 x 2.9 x 0.31 in)
Weight 172 g (6.07 oz)
Body build Glass front (Gorilla Glass 3), plastic back, plastic frame
Colors Prism Crush Black, White, Blue, Pink
Battery 4000 mAh,  Non-removable Li-Po
Battery life
Talking time- Up to 32 h (3G)
Music play - Up to 87 h
Approximate price$280
Technology Super AMOLED
Touchscreen capacitive touchscreen
Display colors 16M
Screen size 6.5" inc
Screen area 102.0 cm2
Screen format 20:9 (height:width)
Screen to body ratio87.4%
Screen resolution 1080 x 2400 px
PPI /points per inch/ 405 PPI
Screen protection Corning Gorilla Glass 3
Camera and Video
Rear camera, main 48 MP, Quad
Camera specs
-48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
-12 MP, f/2.2, 12mm (ultrawide)
-5 MP, f/2.4, 25mm (macro), 1/5.0", 1.12µm
-5 MP, f/2.2, 1/5.0", 1.12µm, depth sensor
Functions LED flash, panorama, HDR
Video 2160p@30fps, 1080p@30/120fps; gyro-EIS
DxOMark Main Score87
DxOMark Photo90
DxOMark Video86
Front camera, selfie 32 MP, Single
Specifications 32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm
Functions HDR
Video 1080p@30fps
Operating system OS Android 10.0; One UI 2
Chipset - Exynos 9611 (10nm)
Processor CPU
- Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Graphics processor GPU - Mali-G72 MP3
External memory microSD, up to 1 TB (dedicated slot)
Internal memory 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
Antutu 8 score192677
Antutu 7 score155326
GeekBench 5 Single Core322
GeekBench 5 Multi-Core1212
Communication and Connectivity
SIM card Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by)
Network GSM / HSPA / LTE
Show all network frequencies:
Edge Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go
Bluetooth 5.0, A2DP, LE
Harmful irradiation
SAR - 0.80 W/kg (head) 0.67 W/kg (body)
SAR EU - 0.37 W/kg (head) 1.59 W/kg (body)
Music and Audio
Radio FM radio
Headphone jack Yes
- Active noise cancellation with dedicated mic
Other features
- Sensors - Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
- ANT+
- Fast battery charging 15W
- Versions: SM-A515F/DSN (Global); SM-A515F/DS (LATAM); SM-A515F/DST (Brazil); SM-A515F/DSM (Russia); SM-A515F/N (Australia)

Samsung Galaxy A51 Video review - click to play

Samsung Galaxy A51 Review

Let us introduce you to one of Samsung's interesting mid-range smartphone models. It belongs to the Galaxy A series. It combines good functionality for its price. 


In appearance, the Galaxy A51 differs from its predecessor. Its design is more similar to that of Samsung's new models. As an example, we will give the S10 Lite and the A71. Among the differences, we also see the use of the infinity-O display, popular these days. Also impressive is the different design of the main camera module. 

We take a look at the pages. Plastic has been used on the edges, which cleverly imitates aluminium. The back panel is plastic with a lacquer finish. To the touch, it resembles glass. This model of the South Korean company is available in four colour solutions. The user can choose between red, blue, black and white. 

If you are wondering if the back panel coating has a name, yes it does. It's called Prism. With several diagonal lines, the case is divided into zones. Depending on the angle you look at the device, light is reflected differently. 

Look at the bezels around the Galaxy A51's screen. They're small. The top and bottom are just a little wider than the sides. The display takes up over 87% of the front panel. Thanks to the thin bezels, the Galaxy A51 is characterised as a mid-sized device. Its dimensions are 158.5×73.6×7.9 mm. Its weight is 172 grams. It is six grams heavier than the A50. You'll have no trouble keeping your phone in the front pocket of your jeans. The Galaxy A51 also lies nicely in the palm of your hand. The rounded edges contribute to this. 


While the Galaxy A51 is larger than the A50 in diagonal (6.4 vs. 6.5 inches), the front panel area has been reduced slightly.

As with its predecessor, the manufacturer has opted for a screen made using Super AMOLED technology. The aspect ratio is 20:9 and the resolution is 1080 x 2400 pixels. The pixel density is approximately 405 ppi. The screen is slightly more elongated and has a denser pixel arrangement. 

The maximum screen brightness is quite high. On the street, you can easily read the display information. As with other screens made with this technology, this parameter varies depending on the amount of white in the image. 

Colour temperature adjustment and support for the Always On Display mode are provided. In the latter, when the screen is inactive, the user continues to see the time and additional information. 


If you want to unlock the Galaxy A51, you can use facial recognition. It works with the help of the front camera. The whole procedure takes about 3 seconds or even less. In other words, it's not instant, but it does work pretty fast. Even if you are wearing a hat or a big scarf, it won't prevent the technology from doing its job. 

The fingerprint scanner is another safety system you can use, betting on the Galaxy A51 model. It's below the screen. It works noticeably slower than what the technology shows on flagship models. In ideal conditions - with clean and dry fingers, a warm environment, recognition takes half a second. With wet fingers, cold weather, rushing - you'll need to exercise patience. 


The Galaxy A51 is based on the Exynos 9611's own development SoC. The chipset is implemented in 10nm process technology. It includes an 8-core CPU consisting of 4 Cortex-A73 performance cores (up to 2.3 GHz) and 4 Cortex-A53 power-efficient cores (up to 1.7 GHz). The Mali-G72 MP3 GPU is responsible for graphics processing. 

The smartphone can be found in several versions - with 4, 6 or 8 GB of RAM. The internal storage is 64 or 128 GB. 

Let's say a few words about the chipset. The Exynos 9611 is typical for mid-budget solutions. We know it from another popular model on the market - Galaxy M30s. It offers sufficient performance for everyday tasks. The interface works smoothly and seamlessly. Applications launch satisfactorily fast. Heavy games should be treated with care. Slowdowns may already occur there. 

Operating system 

The Galaxy A51 runs Android 10. It is supplemented with the company's One UI 2.0 interface. 


One of the major positive changes in the Galaxy A51 compared to the A50 is the camera. The resolution of the main module has been increased from 25 MP to 48 MP. We also know about it that the aperture is f/2.0. The equivalent focal length is 26 mm and the sensor size is 1/2.0″. There is phase detection autofocus. The ultra-wide sensor is 12-megapixels at f/2.2. Another 5-pixel module has been added for macro shots. The last module is designed to blur the background. 

In the interface everything is simple and intuitive. The additional modes - such as panorama, macro, night mode, slow motion, etc., are located in the "More" option. The main unit takes 12-megapixel photos by default. 

If you have ideal conditions, it's sunny outside, for example, your photos will come out saturated and detailed enough. HDR is on by default. It automatically and well handles the details in the bright areas of the footage.  

With the Galaxy A51 in hand, you can count on average-quality photos in the night hours of the day. The detail isn't high enough. The camera also has a night mode. It allows you to get higher quality footage. Just choose correct exposure, better detail processing and halftones. 

The model also offers video shooting in Full HD resolution - at up to 240 frames per second. When shooting standard videos, the electronic stabilization mode is activated. It allows you to eliminate hand shake and significantly improves the final result. 

Autonomous operation 

Galaxy A51 has received a battery with a capacity of 4000 mAh. It allows you to enjoy a standard duration of autonomous operation. In real conditions, the user can count on a few days under moderate load. In more intensive work will require recharging every day. 

The model supports fast charging technology (15W). With its help, you can fill 30% of the charge in just 30 minutes. 


This model of Samsung takes its place worthily in the middle price class of smartphones. It offers an updated design and a larger screen diagonal. Plus, the main camera has received a higher quality macro module. 


  • Contemporary design;
  • Large and quality screen;
  • Excellent camera performance for this class of phone;
  • Can take quality night time photos;
  • Gorilla Glass 3 protection; 
  • Availability of NFC for contactless payments.


  • Speed of the scanners.

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Frequently Asked Questions

The base approximate price of the Samsung Galaxy A51 was around $280 after it was officially announced. At this point, the price may be lower.
The official release date is 2019, December.
The weight of the Samsung Galaxy A51 is 172 g.
The screen size of the Samsung Galaxy A51 is 6.5" inches.
The size of the Samsung Galaxy A51 is 158.5 x 73.6 x 7.9 mm (HxWxD).
No, it does not support 5G
No, it is not waterproof.
Yes, it supports fast charging.
No, it does not support wireless charging.
Yes, it supports the services of Google Play store, gmail, youtube, etc.
There is Quad main camera and Single selfi camera.
To turn on the phone, press and hold the power key until the logo appears on the screen, then release the key. If the phone does not turn on after a few seconds, connect the charger and try again in a minute.
To turn off the phone, press and hold the power button until the power icon appears, then tap the power icon.
To restart the phone, press and hold the volume down key and the power key at the same time until the logo appears on the screen, then release them. This may take up to 30 seconds.
To take a screenshot, press and release the volume down button and the power button at the same time. A thumbnail of the screenshot will appear immediately after that.