The main difference between the Samsung A and S Series lies in their features. The Samsung Galaxy S Series is Samsung’s premium, top-of-the-range flagship series, while the Samsung Galaxy A Series is their mid-range series of smartphones, designed to be more affordable.
Samsung Galaxy A Series
Galaxy innovation made accessible. The Samsung Galaxy A Series combines affordability with innovative features and the latest smartphone technology.
Explore the Samsung Galaxy A Series
From the latest Samsung Galaxy A57 to the popular Samsung Galaxy A17 5G we’ve got a phone to suit everyone. Check out our Samsung Galaxy A deals on Pay Monthly phone contracts with Three.
Samsung Galaxy A57 5G
Slimmer than ever before, with a modern glossy finish. A triple rear camera with 50MP main camera, and new 12MP HDR selfie camera. Galaxy A57 5G captures every detail and hue perfectly.
Samsung Galaxy A56 5G
Take epic photos and videos with the upgraded 50MP camera on Galaxy A56 5G. And enjoy up to 29 hours of use with a long-lasting 5,000 mAh battery.
Samsung Galaxy A37 5G
Packed with Samsung features at an affordable price. The immersive 6.7in FHD+ Super AMOLED screen with 120hz refresh rate delivers a truly vivid visual experience.
Samsung Galaxy A36 5G
Enjoy an incredible triple camera, long-lasting battery, large 6.7in screen, and AI features to transform your photos and the way you multi-task.
Samsung Galaxy A17 5G
Power meets design. With an ultra-immersive 6.7in Super AMOLED display, epic triple lens camera, and extreme durability, the sleek Galaxy A17 5G has all you need.
Compare Samsung Galaxy A models
Not sure which phone to choose? Compare specs and key features of the Samsung Galaxy A Series to decide which one suits you best.
Phones to view
Samsung Galaxy A57 5G
Display: 6.7-inch
Rear Camera: 50MP + 5MP + 2MP
Front Camera: 13MP
Storage: 128GB
Samsung Galaxy A56 5G
Display: 6.7-inch
Rear Camera: 50MP + 12MP + 5MP
Front Camera: 12MP
Storage: 256GB
Samsung Galaxy A37 5G
Display: 6.7-inch
Rear Camera: 50MP + 12MP + 5MP
Front Camera: 12MP
Storage: 256GB
Samsung Galaxy A36 5G
Display: 6.7-inch
Rear Camera: 50MP + 8MP + 5MP
Front Camera: 12MP
Storage: 256GB
Samsung Galaxy A17 5G
Display: 6.7-inch
Rear camera: 50MP + 5MP + 2MP
Front camera: 13MP
Storage: 128GB
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Samsung Galaxy A57 5G
Camera
With a 50MP main camera and new 12MP HDR selfie camera, the Galaxy A57 captures every detail and hue perfectly. And with enhanced nightography, you can take stunning photos and videos, even in low light.
Display
The 6.7in FHD+ Super AMOLED screen has slimmer bezels for an immersive experience and a smooth 120hz refresh rate. It offers a super-smooth, vivid visual experience.
Performance and storage
Galaxy A57 has a powerful Samsung Exynos 1680 processor and runs Android 16. Plus, you get 6 generations of guaranteed Galaxy OS updates and 6 years of the latest security updates. It features 256GB storage, so there’s plenty of space for your photos, videos, and more.
Battery and charging
With a 5000mAh battery and Super Fast Charging 2.0, you can keep scrolling and creating content all day, every day.
Samsung Galaxy A17 5G
Camera
The triple lens camera includes a 50MP wide lens for crisp clarity, a 5MP ultra-wide lens for more in every frame, and a 2MP macro lens for fine textures and close-up shots. New Optical Image Stabilisation keeps videos steady and photos sharp, even in low light. It also features a 13MP front-facing camera.
Display
An ultra-immersive 6.7in Super AMOLED gives you rich colours and crisp details, whether you’re watching or gaming. And an upgraded 90Hz refresh rate makes every scroll, swipe and tap feel effortlessly smooth.
Performance and storage
An Exynos 1330 processor makes the Galaxy A17 5G experience smooth and powerful. It comes with128GB of internal storage and supports up to 2TB MicroSD card.
Battery and charging
Galaxy A17 5G features a large 5,000mAh battery with 25W fast charging – so you don't need to worry about running out of power.
Other products from Samsung
Samsung series on Three
Frequently asked questions
Samsung has released over 60 Galaxy A Series phones since its launch. The phones that are currently available at Three include the A15, A16, A25, A54, and A55. The numbering of the A series can be a little confusing. To keep things simple, the A15 and A16 are the simpler, entry-level models, the A54 and A55 offer higher specs, and the Samsung Galaxy A25 sits somewhere in the middle.
The first phone in the Galaxy A Series was the Samsung Galaxy Alpha, released in September 2014. The most recent model in the Galaxy A Series is the Samsung Galaxy A16, released in February 2025.
The Samsung Galaxy A Series is perfect for those who want a smartphone with solid specs for everyday use, and at a lower price. Those who are more interested in getting a phone with the best available tech, and use their phone for more demanding tasks, the high spec Samsung Galaxy S Series will be more suitable. The most recent S Series is the Samsung Galaxy S25 Series.
Out of the current A Series phones available, the Samsung Galaxy A55 and the Samsung Galaxy A54 include the most impressive camera setups. They include a triple camera system on the rear, with a 50MP main camera, 12MP ultra-wide, and 50MP macro camera, plus a 32MP front-facing camera for detailed, beautiful selfies.
The Samsung Galaxy A15 and A16 are the most affordable in the A Series currently on offer at Three. But you can of course find great offers on a range of different phones, by visiting our Samsung brand page or our latest offers page.
You can get the following phones from Three in a range of colours:
Samsung Galaxy A15 is available in Blue and Dark Blue
Samsung Galaxy A16 is available in Blue, Black, and Light Grey
Samsung Galaxy A25 is available in Black and Blue
Samsung Galaxy A54 is available in Black, White, and Violet
Samsung Galaxy A55 is available in Ice Blue, Lilac, and Navy.
The Samsung Galaxy A Series doesn’t support wireless charging.
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