Samsung Galaxy A51

★★★★★ ★★★★★

(23 reviews)

£90.00 RRP £ 250.00 Save £160.00

The Galaxy A51 delivers a 6.5-inch Super AMOLED screen and a powerful quad-camera system. This phone runs on the Exynos 9611 processor, which caters to the needs of the users for daily use. The attractive appearance and memory that can be expanded made it a middle market favorite.

Colour

Changed due to selection

White

Pink

Silver

Storage

Changed due to selection

128GB

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Manufacturer Code	N/A
EAN	N/A
Colour	Pink
Storage	128GB

Display	6.5" Super AMOLED, FHD+
Processor	Exynos 9611
RAM	4GB / 6GB / 8GB
Storage	64GB / 128GB (expandable via microSD)
Rear Camera	Quad: 48MP + 12MP + 5MP + 5MP
Front Camera	32MP
Battery	4,000mAh
OS	Android 10, upgradable to Android 13

condition

Free next day delivery for orders over £150
Free 48 hour delivery for orders over £30

The length of warranty depends on the condition of the device.

Brand New - manufacturer warranty (min. 12 months)
Refurbished (Good or better) - 12 month warranty
Refurbished (Poor condition) - 3 month warranty

Please note that your warranty will not cover any faults due to impact, pressure, liquid damage, temperature, or any attempt (by you or a third party) to alter or repair the device.

Need to send your phone back to us? No problem! Returning an item is simple and hassle-free at The Big Phone Store. Here’s how it works:

You have 15 days from the date of purchase to notify us that you wish to return your order.
Once your return is approved, you have an additional 15 days to send the item back to us, totalling up to 30 days to complete your return.

Does the Galaxy A51 support 5G?	There is a separate Galaxy A51 5G model; the standard A51 supports up to 4G LTE.
Is the storage expandable?	Yes, via microSD card up to 512GB.
Does it have a headphone jack?	Yes, it includes a 3.5mm headphone jack.
Is the device water-resistant?	No, the Galaxy A51 does not have an official IP rating.

Design and Build

The Samsung Galaxy A51 has a plastic body which is 7.9mm thick and weighs 172g. It's available in Prism Crush Black, White, Blue, and Pink with a 6.5-inch display. There’s no water/dust protection. The profile of the gadget has been described as “thin”, “lissome” and other like adjectives by the users while some have observed that it’s “less premium”, “humbler”, less “elite” than the Galaxy S20.

Plastic chassis, 7.9mm thick
172g weight
No water/dust resistance
In-display fingerprint sensor
No glass back

Feature	Details
Dimensions	158.5 x 73.6 x 7.9 mm
Weight	172g
Materials	Plastic, Gorilla Glass 3
Colors	Prism Crush Black, White, Blue, Pink
Water/Dust Resistance	None
Ports	USB-C, 3.5mm headphone jack
Buttons	Volume, Power

Galaxy A51 Display

With a 2400 x 1080 resolution at 405 PPI and 800 nits brightness, the Galaxy A51 carries on a 6.5-inch Super AMOLED display. It is also fitted with a sheet of Gorilla Glass 3 for protection. The screen has vibrant colors that are very pleasing to the eye, but it’s not a great experience with the 60Hz refresh rate as opposed to the Galaxy A52.

Super AMOLED, 2400 x 1080, 405 PPI
800 nits brightness
60Hz refresh rate
Gorilla Glass 3
No HDR

Specification	Details
Size	6.5 inches
Type	Super AMOLED
Resolution	2400 x 1080, 405 PPI
Brightness	800 nits
Features	60Hz refresh rate
Refresh Rate	60Hz
Protection	Gorilla Glass 3

Performance and Software

The Galaxy A51 is equipped with an Exynos 9611 (octa-core, 2.3GHz, 10nm), 4GB/6GB/8GB RAM, and 64GB/128GB storage. Being originally shipped in the Android 10 version, it can be also updated to One UI 2.0, and it is also able to be further updated to Android 13. Samsung Pay and the Knox security service are included as well. This phone is great for everyday tasks without any issues about the performance, while the phone is also described as slower than the Galaxy S20 by some users.

Exynos 9611, octa-core
4GB/6GB/8GB RAM
Android 10 (up to Android 13)
Samsung Pay, Knox
No flagship performance

Test	A51 Score (est.)
Geekbench 5 (Single-Core)	~350
Geekbench 5 (Multi-Core)	~1300
3DMark Wild Life	~1000

The Exynos 9611 handles casual use well but struggles with heavy gaming.

Cameras

The Galaxy A51 features a quad-camera system: 48MP main (f/2.0), 12MP ultrawide (f/2.2), 5MP macro (f/2.4), and 5MP depth (f/2.2), with a 32MP front camera (f/2.2). It supports 4K video at 30fps. Users praise its daylight performance but note weaker low-light shots than the Galaxy S20.

48MP main, 12MP ultrawide
5MP macro, 5MP depth
32MP front
4K video at 30fps
No telephoto

Camera	Specifications
Main	48MP (f/2.0)
Ultrawide	12MP (f/2.2)
Front	32MP (f/2.2)
Video	4K at 30fps

Battery and Charging

The Galaxy A51 has a 4000mAh battery, offering up to 15 hours of video playback. It supports 15W fast charging (0–100% in ~90min) via USB-C. Real-world use yields 1–1.5 days. Users appreciate its battery life but note slower charging than the Galaxy A71.

4000mAh battery
Up to 15h video playback
15W charging, 0–100% in ~90min
1–1.5 days real-world
No wireless charging

Model	Battery Life (Video)	Real-World Test
Galaxy A51	15h	1–1.5 days
Galaxy A50	14h	1–1.5 days

Connectivity

The Galaxy A51 supports Wi-Fi 5 (802.11ac), Bluetooth 5.0, 4G, NFC, and GPS (A-GPS, GLONASS, Galileo, BDS). It includes a 3.5mm headphone jack and USB-C 2.0. Users praise its connectivity but note no 5G support compared to the Galaxy A52 5G.

Wi-Fi 5, Bluetooth 5.0
4G, NFC
GPS, 3.5mm jack
USB-C 2.0
No 5G

Feature	Details
Wi-Fi	Wi-Fi 5 (802.11ac)
Bluetooth	5.0
Cellular	4G
GPS	A-GPS, GLONASS, Galileo, BDS
Other	NFC, 3.5mm jack, USB-C 2.0

Why People Love Us

Trusted for our quality, loved for our service. We deliver excellence every step of the way.

Windlock

Posted on Feb 02, 2026

Refurbished Samsung Galaxy A51 arrived in excellent condition. The display is vibrant and performance is steady, making it a trusted Samsung phone UK. Good value for money.

Verity

Posted on Feb 02, 2026

The refurbished Samsung Galaxy A51 feels smooth for daily use. Ideal for browsing and apps, and a reliable unlocked smartphone UK. Still a solid choice.

Northwick

Posted on Jan 22, 2026

Using the Samsung Galaxy A51 has been smooth for everyday apps and social media. A reliable budget Samsung phone UK option.

Ansmela

Posted on Jan 22, 2026

My experience with the Samsung Galaxy A51 has been consistent and user-friendly. A good pick if you want a trusted Android phone UK.

Roehmpton

Posted on Jan 21, 2026

My experience with the Samsung Galaxy A51 has been positive for calls, apps, and browsing. A good SIM free phone UK for daily needs.

Tiam

Posted on Jan 21, 2026

The Samsung Galaxy A51 still performs well for everyday tasks and media use. A dependable budget Samsung phone UK.

Nyrell

Posted on Jan 08, 2026

I’m happy with my refurbished Samsung Galaxy A51 purchase. The screen quality is still impressive, making it a good-value SIM-free Samsung option.

Auerlion

Posted on Jan 08, 2026

The refurbished Samsung Galaxy A51 arrived in great condition and performs well for daily tasks. It’s a dependable unlocked smartphone UK with a clean Android smartphone experience.

Jessica Cole

Posted on Jan 02, 2026

I bought the refurbished Samsung Galaxy A51 as a budget option and it hasn’t disappointed. Battery life and display quality are strong for a refurbished Samsung handset.

Summer