Galaxy A15 vs Galaxy S23 Ultra
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Galaxy A15
Starting at
£112.59£169.00 new
Galaxy S23 Ultra
Starting at
£369.24£1,599.00 newWhat's the difference between the Galaxy A15 and Galaxy S23 Ultra?
Galaxy A15 vs S23 Ultra comes down to the chipset, RAM and screen size. Refurbished, the Galaxy A15 starts at £112.59, £256.65 less than the Galaxy S23 Ultra.
Refurbished from
Chipset
RAM
Screen size
Screen type
Refresh rate
- Chipset: Mediatek Helio G99 (6nm) on the Galaxy A15, Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm) on the Galaxy S23 Ultra.
- The Galaxy S23 Ultra has more RAM: 12 GB vs 4 GB.
- The Galaxy S23 Ultra has a bigger screen: 6.8 inch vs 6.5 inch.
Galaxy A15 vs Galaxy S23 Ultra specs
The Galaxy A15 and Galaxy S23 Ultra both come from 2023 but serve different needs. The Galaxy A15 is a simpler phone designed for everyday use, offering good battery life, a solid 4 GB RAM, and a 90 Hz screen, making it suitable for basic apps and media viewing. The Galaxy S23 Ultra is aimed at users who want top-tier performance with its Snapdragon 8 Gen 2 chipset, 12 GB RAM, a larger and sharper 120 Hz screen, and an impressive 200 MP main camera. The Galaxy A15 suits those who prefer a straightforward phone with expandable storage and a headphone jack, while the Galaxy S23 Ultra is for people looking for a premium device with advanced features like 5G, dual SIM options, and more storage choices.
Galaxy A15 vs Galaxy S23 Ultra price
Colour
Galaxy A15 vs Galaxy S23 Ultra battery life and software updates
Battery life and software affect how long a phone lasts on a charge and stays current. Both devices share the same battery size and release year, but their software details provide different user experiences.
Battery Capacity
Both the Galaxy A15 and Galaxy S23 Ultra have a 5000 mAh battery. This capacity supports long usage between charges, suitable for all-day use whether you are on calls, browsing, or streaming.
Operating System
The Galaxy A15 runs on Android without a specified version, making it suitable for everyday use with standard app compatibility.
Battery
Fast charging
Foldable
OS at launch
Software updates
Year of release
Galaxy A15 vs Galaxy S23 Ultra performance
Performance determines how smoothly apps run and how well the phone handles multitasking. The two phones differ significantly in processing power and memory, affecting who they suit best.
Processor Power
The Galaxy A15 uses a Mediatek Helio G99 chipset built on a 6 nm process, which is designed for everyday tasks and moderate app use. The Galaxy S23 Ultra features a Qualcomm SM8550-AC Snapdragon 8 Gen 2 chipset on a 4 nm process, offering a much higher level of performance for demanding apps, gaming, and multitasking.
Memory and Storage
With 4 GB of RAM, the Galaxy A15 handles basic multitasking and standard apps well. The Galaxy S23 Ultra has 12 GB of RAM, allowing more apps to stay open simultaneously and smoother performance with intensive tasks. Storage options also differ: the Galaxy A15 offers 128 GB, while the Galaxy S23 Ultra comes in larger sizes of 256 GB, 512 GB, and 1 TB, suited to users needing more space for apps, photos, and videos.
Chipset
RAM
Galaxy A15 vs Galaxy S23 Ultra screen
Screen quality affects how you experience videos, apps, and games. Differences in size, resolution, and refresh rate change how vivid and smooth the display looks on each phone.
Screen Size and Type
The Galaxy A15 has a 6.5 inch Super AMOLED screen, which offers good colour and contrast for everyday use. The Galaxy S23 Ultra has a larger 6.8 inch Dynamic AMOLED 2X screen, providing a more immersive viewing experience with enhanced brightness and deeper colours.
Resolution and Refresh Rate
The Galaxy A15 displays at 1080 x 2340 pixels with a 90 Hz refresh rate, making scrolling and animations smooth for general use. The Galaxy S23 Ultra has a higher resolution of 1440 x 3088 pixels and a 120 Hz refresh rate, delivering sharper images and even smoother motion, which benefits gaming and high-quality video playback.
Refresh rate
Resolution
Screen size
Screen type
Galaxy A15 vs Galaxy S23 Ultra camera
Camera quality and front camera detail matter for photos and video calls. The two phones take different approaches to imaging, which influences the type of photos you can capture.
Main Camera Detail
The Galaxy A15 has a 50 megapixel main camera, suitable for capturing good detail in everyday photography. The Galaxy S23 Ultra features a 200 megapixel main camera, allowing for extremely detailed photos that can be cropped or zoomed without losing clarity.
Front Camera
For selfies and video calls, the Galaxy A15 offers a 13 megapixel front camera, which delivers clear images for personal use. The Galaxy S23 Ultra has a 12 megapixel front camera, close in resolution but optimised for high-end video and selfie quality.
Camera type
Front camera
Main camera
Galaxy A15 vs Galaxy S23 Ultra size and design
Other features include network compatibility, physical design, and connectivity options that affect daily convenience and usage style.
Network and SIM Options
The Galaxy A15 supports 4G networks and uses a single physical SIM card, fitting users who do not need the fastest mobile data or multiple SIMs. The Galaxy S23 Ultra supports 5G for faster connectivity and offers dual physical SIM plus eSIM, which suits users needing multiple numbers or plans.
Ports and Expandability
The Galaxy A15 includes both USB-C and a 3.5 mm headphone jack, making it easy to use wired headphones without adapters. It also has a microSDXC slot, allowing you to expand storage. The Galaxy S23 Ultra uses only USB Type-C and does not have an SD card slot, so storage depends on the built-in options.
Size and Weight
The Galaxy A15 is slightly smaller and lighter with dimensions of 160.1 mm by 76.8 mm and weighs 200 g. The Galaxy S23 Ultra is larger at 163.4 mm by 78.1 mm and weighs 234 g, which may feel more substantial in hand but offers a bigger screen.
Carrier compatibility
Connector
Depth
Height
Mobile network
SD card slot
SIM card
Weight
Width
Galaxy A15 or Galaxy S23 Ultra: which should you buy?
Buy the Galaxy A15 if
- you want to spend less: it starts at £112.59, £256.65 less than the Galaxy S23 Ultra
- you want a higher-resolution front camera (13 megapixels vs 12 megapixels)
- you want longer software support (until Dec 2028 vs until Feb 2028)
Buy the Galaxy S23 Ultra if
- you want more RAM (12 GB vs 4 GB)
- you want a bigger screen (6.8 inch vs 6.5 inch)
- you want a smoother screen (120 Hz vs 90 Hz)
What our customers say
Customers who bought the Galaxy A15 appreciate its condition and ease of use. Many mention it looks like new and is suitable for less tech-savvy users, including children and older family members. The battery life is often praised, and the camera and screen quality are considered good for everyday tasks. Some say it can be a bit slow sometimes, but overall it works well for basic needs and offers good value.
Reviews for the Galaxy S23 Ultra highlight its pristine condition and high performance. Customers note the phone looks almost new, runs smoothly, and the camera quality is excellent, especially the 200 MP main sensor. The large, sharp screen and fast Snapdragon processor stand out. Several mention it as a great upgrade or a high-end device available at a lower price. The 5G support and multiple SIM options also appeal to users needing advanced features.
The Galaxy A15 suits buyers wanting a straightforward phone with good battery life, expandable storage, and a headphone jack. The Galaxy S23 Ultra fits those who want a premium experience with a large, high-resolution screen, top-tier performance, and extra storage and connectivity options.
Galaxy A15 vs Galaxy S23 Ultra FAQs
Galaxy A15 vs S23 Ultra comes down to the chipset, RAM and screen size. Chipset: Mediatek Helio G99 (6nm) on the Galaxy A15, Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm) on the Galaxy S23 Ultra. The Galaxy S23 Ultra has more RAM: 12 GB vs 4 GB.
The Galaxy A15 is cheaper refurbished, from £112.59 compared with £369.24 for the Galaxy S23 Ultra.
Both have the same battery: 5000 mAh.
The Galaxy S23 Ultra has a higher-resolution main camera: 200 megapixels vs 50 megapixels.
The Galaxy A15 gets updates until Dec 2028. The Galaxy S23 Ultra gets updates until Feb 2028.
Refurbished, the Galaxy A15 comes in 128GB, and the Galaxy S23 Ultra in 256GB, 512GB and 1TB.








