Galaxy A51 vs iPhone 6S
Shop Samsung Galaxy
Galaxy A51
Starting at
£96.95£350.00 new
iPhone 6S
Starting at
£32.09£149.00 newWhat's the difference between the Galaxy A51 and iPhone 6S?
Galaxy A51 vs iPhone 6S comes down to the chipset, RAM and battery. Refurbished, the iPhone 6S starts at £32.09, £64.86 less than the Galaxy A51. The Galaxy A51 is the newer model, released in 2019.
Refurbished from
Chipset
RAM
Battery
Screen size
Screen type
- Chipset: Exynos 9611 on the Galaxy A51, Apple A9 APL0898 on the iPhone 6S.
- The Galaxy A51 has more RAM: 4 GB vs 2 GB.
- The Galaxy A51 has a bigger battery: 4000 mAh vs 1715 mAh.
Galaxy A51 vs iPhone 6S specs
The Galaxy A51 and iPhone 6S differ in key areas that suit different needs. The Galaxy A51 has a larger 6.5 inch Super AMOLED screen with higher resolution, making it a good choice if you want a roomier display for videos or browsing. It also offers more RAM and higher megapixel cameras for sharper photos and smoother multitasking. The iPhone 6S has a smaller 4.7 inch IPS LCD screen and less RAM, which suits users who prefer a compact phone for everyday use. The Galaxy A51's bigger battery supports longer usage between charges, while the iPhone 6S is lighter and has several storage options down to 16GB. Both are unlocked and support 4G, so your choice depends on your priorities in screen size, camera, battery life, and storage.
Galaxy A51 vs iPhone 6S price
Colour
Galaxy A51 vs iPhone 6S battery life and software updates
Durability covers battery capacity, operating system, and other physical factors that influence daily use. These affect how long the phone lasts on a charge and the software experience you get.
Battery Capacity
The Galaxy A51 has a 4000 mAh battery, which suits users who want longer use between charges. The iPhone 6S has a 1715 mAh battery, which fits well for lighter daily use or shorter screen time before recharging.
Operating System
The Galaxy A51 runs on Android, offering a different app environment and customization options compared to the iPhone 6S, which runs on iOS. Your choice here depends on which ecosystem you prefer for apps and updates.
Battery
Fast charging
Foldable
Software updates
Year of release
Galaxy A51 vs iPhone 6S performance
Performance influences how smoothly the phone runs apps and multitasks. RAM, chipset and storage capacity shape the experience for everyday use or heavier tasks.
RAM Size
The Galaxy A51 comes with 4 GB of RAM, which helps keep more apps open and supports smoother multitasking. The iPhone 6S has 2 GB of RAM, which is suited to simpler or lighter use with fewer apps active at once.
Chipset
The Galaxy A51 uses an Exynos 9611 chipset, while the iPhone 6S has an Apple A9 APL0898 chipset. Both provide adequate performance for everyday tasks, but the Galaxy A51's chipset is paired with more RAM.
Storage Options
The Galaxy A51 is available in 64GB and 128GB versions, which suits users needing more space for apps, photos, and media. The iPhone 6S offers 16GB, 32GB, and 64GB options, allowing for more choice if you want a smaller or moderate storage size.
Chipset
RAM
Galaxy A51 vs iPhone 6S screen
Screen quality affects how you see content, from sharpness to colour and size. The differences here suit users with different viewing preferences.
Screen Size
The Galaxy A51 has a 6.5 inch screen, providing more room for watching videos, browsing, and gaming. The iPhone 6S has a 4.7 inch screen, which suits users who prefer a more compact phone that fits easily in one hand.
Resolution
The Galaxy A51's screen resolution is 1080 x 2400, delivering sharper images and clearer text across its larger display. The iPhone 6S has a 750 x 1334 resolution, which fits its smaller screen size and suits everyday use.
Screen Type
The Galaxy A51 features a Super AMOLED screen, known for vibrant colours and deep blacks, enhancing media and gaming experiences. The iPhone 6S uses an IPS LCD, offering reliable colour accuracy and viewing angles, suitable for general use.
Refresh rate
Resolution
Screen size
Screen type
Galaxy A51 vs iPhone 6S camera
Audiovisual features focus on camera quality, which is key for photos and videos, including selfies.
Front Camera
The Galaxy A51 has a 32 megapixel front camera, ideal for high-detail selfies and video calls. The iPhone 6S has a 5 megapixel front camera, suited to basic selfie and video needs.
Main Camera
The Galaxy A51 offers a 48 megapixel main camera, capturing more detail in photos. The iPhone 6S has a 12 megapixel main camera, which works well for everyday photography but with lower resolution.
Camera type
Front camera
Main camera
Galaxy A51 vs iPhone 6S size and design
Miscellaneous specs include physical dimensions, SIM and memory options, and network compatibility, influencing daily convenience and usage.
SIM and Memory Card
The Galaxy A51 supports dual physical SIM cards and a microSDXC card slot for expandable storage, which suits users who need to manage two numbers or want more space. The iPhone 6S has a single physical SIM card and does not support microSD cards.
Weight and Size
The Galaxy A51 weighs 172 g and measures 158.5 mm in height, 73.6 mm wide, and 7.9 mm deep, making it a larger and heavier device. The iPhone 6S is lighter at 143 g and smaller with 138.3 mm height, 67.1 mm width, and 7.1 mm depth, fitting better in smaller pockets or hands.
Carrier and Network
Both phones are unlocked and support 4G networks, giving flexibility to use with various providers and reliable mobile data speeds.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy A51 or iPhone 6S: which should you buy?
Buy the Galaxy A51 if
- you want more RAM (4 GB vs 2 GB)
- you want a bigger battery (4000 mAh vs 1715 mAh)
- you want a bigger screen (6.5 inch vs 4.7 inch)
Buy the iPhone 6S if
- you want to spend less: it starts at £32.09, £64.86 less than the Galaxy A51
- you want a lighter build (143 g vs 172 g)
What our customers say
Customers who chose the Galaxy A51 often mention its nearly new appearance and ample storage. Many appreciate its performance and interface, noting it works well for everyday use despite some mentioning battery life as shorter than desired. The larger screen and camera quality receive positive comments, with several users happy with how good the phone looks and performs after refurbishment. Some reports mention dirt or scratches on less well-maintained units, but many customers find the phone in good condition.
For the iPhone 6S, customers highlight its compact size and good condition, often describing it as feeling like a brand new phone. Battery health varies, with some noting it needs charging more often or has been replaced for better longevity. The camera and screen suit users looking for a simpler, lighter phone. Many users find it easy to use, especially for those who prefer iOS. Some mention the phone being a good choice for gifts or for users who want a smaller device.
Overall, the Galaxy A51 suits users wanting a larger, more powerful device with more storage and a vivid screen. The iPhone 6S fits those preferring a smaller, lighter phone with a simple interface and moderate storage options.
Galaxy A51 vs iPhone 6S FAQs
Galaxy A51 vs iPhone 6S comes down to the chipset, RAM and battery. Chipset: Exynos 9611 on the Galaxy A51, Apple A9 APL0898 on the iPhone 6S. The Galaxy A51 has more RAM: 4 GB vs 2 GB.
The iPhone 6S is cheaper refurbished, from £32.09 compared with £96.95 for the Galaxy A51.
The Galaxy A51 has a bigger battery: 4000 mAh vs 1715 mAh.
The Galaxy A51 has a higher-resolution main camera: 48 megapixels vs 12 megapixels.
The Galaxy A51 no longer gets updates. Updates for the iPhone 6S ended in Mar 2025. Its last version is iOS 15.
Refurbished, the Galaxy A51 comes in 64GB and 128GB, and the iPhone 6S in 16GB, 32GB and 64GB.









