Why you can trust ZDNET : ZDNET independently tests and researches products to bring you our best recommendations and advice. When you buy through our links, we may earn a commission. Our process

'ZDNET Recommends': What exactly does it mean?

ZDNET's recommendations are based on many hours of testing, research, and comparison shopping. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing.

When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. Neither ZDNET nor the author are compensated for these independent reviews. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers.

ZDNET's editorial team writes on behalf of you, our reader. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. If we have made an error or published misleading information, we will correct or clarify the article. If you see inaccuracies in our content, please report the mistake via this form.


Samsung Galaxy A51, hands on: Solid mid-range specs and performance

Written by Sandra Vogel, Contributor
  • Editors' review
  • Specs

The Galaxy A51 is a nicely specified handset that should appeal to Samsung fans looking for mid-range performance at a reasonable price. There are more affordable alternatives if you're interested in buying SIM-free, though.

My review sample came from Vodafone, where it's on contract from £34 a month. It is only available in black from Vodafone, but white, blue and silver versions are available direct from Samsung, where the handset will set you back £329 (inc. VAT) SIM free.


The 6.5-inch Galaxy A51 runs on Samsung's mid-range Exynos 9611 chipset with 4GB of RAM and 128GB of internal storage. It has a 4000mAh battery.

Image: Sandra Vogel / ZDNet

For that money you get 128GB of internal storage, of which 21GB is used out of the box and 107GB is free for your own use. You can augment this via a MicroSD card without sacrificing one of the Galaxy A51's two SIM slots. There is just 4GB of RAM, although 6GB is becoming increasingly common, even at the lower end of the market. The Galaxy A51 runs on Samsung's Exynos 9611 processor and turned in respectable Geekbench 5 benchmarks, with average scores of 346 (single core) and 1321 (multi core). That's a shade under the benchmarks for the Motorola Moto G8, and Google Pixel 4a, but perfectly respectable for a handset at this price. 

SEE: 5G smartphones: A cheat sheet (free PDF) (TechRepublic)

The Galaxy A51's 4000mAh battery kept the handset going for 11 hours and one minute under the PC Mark for Android Work 2.0 battery test, and when asked to play YouTube video for three hours non-stop at full screen, it dropped 20% from a full charge. 

In short, this is a handset that should be up to most everyday tasks, and as long as you don't push the battery too hard, you should get a day's use from it. 

The Galaxy A51 is quite thin at 7.9mm (it's 158.5mm tall and 73.6mm wide), and weighs just 172g. It has a 3.5mm headset jack at the bottom, but the most impressive feature in design terms is the backplate. This has a couple of angled insets so that the design is a mix of two-tone plain design and vertical stripes. But even more interesting, the back refracts light in a true rainbow effect, which is really eye-catching. However, without a case it's a slippery critter.

Top ZDNET Reviews

Raspberry Pi 4

Top ZDNET Reviews

Raspberry Pi 4

Raspberry Pi 400

Top ZDNET Reviews

Raspberry Pi 400

Samsung Galaxy Xcover Pro

Top ZDNET Reviews

Samsung Galaxy Xcover Pro

reMarkable 2

Top ZDNET Reviews

reMarkable 2


There are four cameras at the back: 48MP wide-angle; 12MP ultra-wide-angle; 5MP macro; and 5MP depth-sensing.

Image: Sandra Vogel / ZDNet  

The 6.5-inch AMOLED screen delivers bright, punchy images, and its 2,400-by-1,080 pixel resolution (405ppi) means that text is readable and graphics look pretty sharp. There are small side and top bezels, and a slightly larger bottom bezel, making for a decent screen-to-body ratio of 87.4%. A punch-hole for the front camera sits in the top centre of the screen. The fingerprint sensor is in-screen, and Gorilla Glass 3 provides some protection against drops.

The quad camera setup at the rear is impressive for a handset at this price point. The main 48MP f/2.0 wide-angle camera is joined by 12MP f/2.2 ultra-wide-angle (123°), 5MP f/2.4 macro and 5MP f/2.2 depth sensing cameras. Images were pretty impressive, and I did enjoy using the macro lens. It's a shame this is hidden away under the More button on the main screen, where it sits with pro mode, panorama, food, night, slow-mo, super-slow-mo, and hyperlapse modes. The selfie camera is a 32MP unit with an f/2.2 wide-angle lens. 

Android 10 is coupled with Samsung's own UI and quite a lot of pre-installed extras, including Samsung Pay, Netflix, Facebook, Instagram, Spotify and Samsung's own Galaxy Store. Some of these can be deleted, but anything else you don't want will need to be hidden away in a folder somewhere.

For those on a budget, Samsung's Galaxy A51 performs capably, has a large screen, strong battery life and looks good. It's worth shopping around at this price though, as there's plenty of competition.


Samsung Galaxy S20 FE: $699, 5G, key features make it midmarket contender

Google Pixel 4a review: Excellence at an affordable price

Motorola Moto G 5G Plus review: A great budget smartphone, with added 5G support

Motorola Moto G8 review: Great value, but display could be better

The best cheap phones for frugal times: Flagship features on any budget

Read more reviews