Galaxy A55 vs Galaxy S25 Ultra
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Galaxy A55
Starting at
£234.03£356.69 new
Galaxy S25 Ultra
Starting at
£678.00£1,200.00 newWhat's the difference between the Galaxy A55 and Galaxy S25 Ultra?
Galaxy A55 vs S25 Ultra comes down to the chipset, RAM and screen size. Refurbished, the Galaxy A55 starts at £234.03, £443.97 less than the Galaxy S25 Ultra. The Galaxy S25 Ultra is the newer model, released in 2025.
Refurbished from
Chipset
RAM
Screen size
Screen type
Main camera
- Chipset: Exynos 1480 (4 nm) on the Galaxy A55, Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm) on the Galaxy S25 Ultra.
- The Galaxy S25 Ultra has more RAM: 12 GB vs 8 GB.
- The Galaxy S25 Ultra has a bigger screen: 6.9 inch vs 6.6 inch.
Galaxy A55 vs Galaxy S25 Ultra specs
The Galaxy A55 and Galaxy S25 Ultra share a 5000 mAh battery and 120 Hz refresh rate but differ in key areas that suit different users. The Galaxy A55 offers 8 GB RAM, a 6.6-inch Full HD+ screen, and expandable storage via microSDXC. It is a solid choice for everyday use and those who appreciate a balance of features and price. The Galaxy S25 Ultra provides a larger 6.9-inch Quad HD+ screen with advanced AMOLED technology, 12 GB RAM, and significantly more storage options without expansion. It also supports software updates for a longer period. This device suits users who want more power, a more detailed screen, and advanced camera capabilities.
Galaxy A55 vs Galaxy S25 Ultra price
Galaxy A55 vs Galaxy S25 Ultra battery life and software updates
Battery capacity is the same for both phones but software update support and release year differ. These points help you decide how long you want your phone to stay current and secure.
Battery Capacity
Both the Galaxy A55 and Galaxy S25 Ultra come with a 5000 mAh battery. This capacity should provide a full day's use for typical activities like browsing, calls, and media. Battery life will depend more on usage habits than the phones' difference here.
Software Updates
The Galaxy A55 will receive software updates until March 2029, providing support for about five years from its release. The Galaxy S25 Ultra offers support until February 2032, extending updates by nearly three years. If keeping your phone up to date with software improvements is important, the S25 Ultra will cover a longer period.
Battery
Fast charging
Foldable
Ip rating
Software updates
Wireless charging
Year of release
Galaxy A55 vs Galaxy S25 Ultra performance
Performance is shaped by chipset, RAM, and storage options. These affect how quickly the phone handles apps, multitasking, and storage needs.
Chipset Technology
The Galaxy A55 runs on the Exynos 1480 chipset built on a 4 nm process. The Galaxy S25 Ultra uses the Qualcomm SM8750-AC Snapdragon 8 Elite with a 3 nm process. This means the S25 Ultra has a more advanced chipset that can handle demanding apps and tasks more efficiently, suited to users wanting higher performance.
RAM Capacity
The Galaxy A55 offers 8 GB of RAM, enough for everyday apps and smooth multitasking. The Galaxy S25 Ultra has 12 GB RAM, allowing it to keep more apps open and handle heavier workloads. If you run many apps at once or use resource-intensive software, the S25 Ultra provides a more powerful experience.
Storage Options
The Galaxy A55 comes in 128 GB and 256 GB storage variants, with support for microSDXC cards to increase storage. The Galaxy S25 Ultra offers larger built-in storage options: 256 GB, 512 GB, and 1 TB, but no memory card slot. Choose the A55 if you want the option to add storage later or the S25 Ultra if you prefer large internal storage from the start.
Chipset
RAM
Galaxy A55 vs Galaxy S25 Ultra screen
Screen size, resolution, and type affect how content looks and feels on the device. Both phones refresh at 120 Hz for smooth scrolling and animations.
Screen Size and Resolution
The Galaxy A55 has a 6.6-inch screen with 1080 x 2340 resolution. The Galaxy S25 Ultra has a larger 6.9-inch screen with a higher 1440 x 3120 resolution. This means the S25 Ultra provides a bigger and sharper display area, which suits watching videos or reading detailed content.
Screen Technology
The Galaxy A55 uses Super AMOLED technology, delivering vibrant colours and good contrast. The Galaxy S25 Ultra features Dynamic LTPO AMOLED 2X, which can adjust the refresh rate dynamically to save battery while maintaining smooth visuals. This screen suits users who want the best display quality and power efficiency.
Refresh rate
Resolution
Screen size
Screen type
Galaxy A55 vs Galaxy S25 Ultra camera
Camera setups and megapixels differ notably, influencing photo quality and flexibility. Front camera resolution also varies, affecting selfies and video calls.
Main Camera Resolution
The Galaxy A55 has a 50 megapixel main camera in a triple lens setup, suitable for everyday photography with good clarity. The Galaxy S25 Ultra offers a 200 megapixel main camera within a quadruple lens array, capturing more detail and providing more versatility for photography enthusiasts.
Front Camera Resolution
The Galaxy A55 has a 32 megapixel front camera, delivering high-resolution selfies and clear video calls. The Galaxy S25 Ultra has a 12 megapixel front camera, which is lower in megapixels but still capable of quality images for most users.
Camera type
Front camera
Main camera
Galaxy A55 vs Galaxy S25 Ultra size and design
Other differences include SIM options, expansion capabilities, and physical dimensions. These can influence how you use the phone daily.
SIM and Expansion
The Galaxy A55 supports dual physical SIM cards and accepts microSDXC cards for storage expansion. The Galaxy S25 Ultra uses one physical SIM card plus eSIM support but does not allow memory card expansion. The A55 suits users who want two physical SIMs or extra storage on a card.
Size and Weight
The Galaxy A55 measures 161.1 mm tall, 77.4 mm wide, and is 8.2 mm deep, weighing 213 g. The Galaxy S25 Ultra is slightly taller at 162 mm, narrower at 77 mm, thinner at 8 mm, and weighs 218 g. This makes the S25 Ultra a bit larger but marginally slimmer, which might affect comfort based on your hand size and pocket space.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy A55 or Galaxy S25 Ultra: which should you buy?
Buy the Galaxy A55 if
- you want to spend less: it starts at £234.03, £443.97 less than the Galaxy S25 Ultra
- you want a higher-resolution front camera (32 megapixels vs 12 megapixels)
- you want a lighter build (213 g vs 218 g)
Buy the Galaxy S25 Ultra if
- you want more RAM (12 GB vs 8 GB)
- you want a bigger screen (6.9 inch vs 6.6 inch)
- you want a higher-resolution main camera (200 megapixels vs 50 megapixels)
What our customers say
Customers who chose the Galaxy A55 appreciate its condition and performance for everyday use. They describe it as looking like new and being easy to set up, with smooth operation and a clear, fast display. Many highlight the usefulness of storage expansion via microSDXC and dual physical SIM slots. The camera quality and battery life meet their needs, though some mention using speakerphone as a minor drawback. Overall, customers find the A55 a good upgrade and value for its price.
Galaxy S25 Ultra customers praise the phone's near-new condition, excellent battery life, and impressive display. They highlight the camera's ability to take detailed photos without fiddling with settings and find the phone easy to use despite its many features. The S25 Ultra is noted for speed and build quality, with some mentioning the S Pen as a useful addition. Most find it a satisfying choice for those wanting a high-performance device with advanced capabilities.
The Galaxy A55 suits users looking for a reliable, well-rounded phone with expandable storage and dual SIM flexibility. The Galaxy S25 Ultra fits those wanting a larger, sharper screen, more power, and advanced photography options, along with longer software support.
Galaxy A55 vs Galaxy S25 Ultra FAQs
Galaxy A55 vs S25 Ultra comes down to the chipset, RAM and screen size. Chipset: Exynos 1480 (4 nm) on the Galaxy A55, Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm) on the Galaxy S25 Ultra. The Galaxy S25 Ultra has more RAM: 12 GB vs 8 GB.
The Galaxy A55 is cheaper refurbished, from £234.03 compared with £678 for the Galaxy S25 Ultra.
Both have the same battery: 5000 mAh.
The Galaxy S25 Ultra has a higher-resolution main camera: 200 megapixels vs 50 megapixels.
The Galaxy A55 gets updates until Mar 2029. The Galaxy S25 Ultra gets updates until Feb 2032.
The Galaxy S25 Ultra adds more RAM (12 GB vs 8 GB), a bigger screen (6.9 inch vs 6.6 inch) and a higher-resolution main camera (200 megapixels vs 50 megapixels). Refurbished, it costs £443.97 more (from £678 vs £234.03).
Refurbished, the Galaxy A55 comes in 128GB and 256GB, and the Galaxy S25 Ultra in 256GB, 512GB and 1TB.
