Galaxy S20 Ultra vs Galaxy S21 Ultra 5G
Shop Samsung Galaxy
Galaxy S20 Ultra
Starting at
£269.45£1,199.99 new
Galaxy S21 Ultra 5G
Starting at
£268.86£1,316.00 newWhat's the difference between the Galaxy S20 Ultra and Galaxy S21 Ultra 5G?
Galaxy S20 Ultra vs S21 Ultra 5G comes down to the screen size, software updates and mobile network. Refurbished, the Galaxy S21 Ultra 5G starts at £268.86, £0.59 less than the Galaxy S20 Ultra. The Galaxy S21 Ultra 5G is the newer model, released in 2021.
Refurbished from
Screen size
Software updates
Mobile network
Weight
SD card slot
- Screen size: 6.9 inch on the Galaxy S20 Ultra, 6.8 inch on the Galaxy S21 Ultra 5G.
- Software updates: Ended Mar 2025 on the Galaxy S20 Ultra, Ended Feb 2026 on the Galaxy S21 Ultra 5G.
- The Galaxy S21 Ultra 5G has 5G.
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G specs
The Galaxy S20 Ultra and Galaxy S21 Ultra 5G share many features such as a 5000 mAh battery, 12 GB RAM, and a 120 Hz Dynamic AMOLED 2X screen with 1440 x 3200 resolution. The S20 Ultra has a slightly larger 6.9 inch screen compared to the S21 Ultra 5G's 6.8 inch display. The S21 Ultra 5G supports 5G networks and offers multiple storage options up to 512GB, while the S20 Ultra works on 4G and has a microSDXC slot for storage expansion. Both have high-resolution 108 megapixel main cameras and 40 megapixel front cameras. Choose the S21 Ultra 5G if you want 5G, more storage choices, and current software updates. The S20 Ultra suits those who prefer a larger screen and microSD card support.
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G price
Colour
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G battery life and software updates
Durability covers battery life, software support, and basic design aspects. Both phones have a strong battery capacity but differ in software updates and SIM options.
Battery Capacity
Both the Galaxy S20 Ultra and the Galaxy S21 Ultra 5G have a 5000 mAh battery. This means either phone can provide long usage times between charges, suitable for heavy daily use.
Battery
Foldable
Ip rating
Software updates
Wireless charging
Year of release
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G performance
Chipset
RAM
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G screen
Screen quality affects how you view content and interact with your phone. Both phones have high resolution and fast refresh rates but differ slightly in size.
Screen Size
The Galaxy S20 Ultra has a 6.9 inch screen, offering a bit more space for video, reading, and multitasking. The Galaxy S21 Ultra 5G has a 6.8 inch screen, which is slightly smaller but still very roomy for most uses.
Display Features
Both phones use Dynamic AMOLED 2X displays with 120 Hz refresh rates and 1440 x 3200 resolution. This combination provides smooth motion and sharp, vibrant images, making them well suited for media and gaming.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G camera
Cameras are important for photography and video calls. Both phones have the same camera setups and megapixel counts, ensuring consistent image quality.
Camera Setup
Both the Galaxy S20 Ultra and the Galaxy S21 Ultra 5G have quadruple rear cameras with a 108 megapixel main sensor and a 40 megapixel front camera. This means both deliver detailed photos and clear selfies.
Camera type
Front camera
Main camera
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G size and design
Other features like network compatibility, physical size, and storage options vary between the two phones and influence how you use the device daily.
Mobile Network Support
The Galaxy S21 Ultra 5G supports 5G networks, offering faster mobile internet where available. The Galaxy S20 Ultra works on 4G, which remains widely used and reliable for most users.
Storage Options
The Galaxy S21 Ultra 5G comes in 128GB, 256GB, and 512GB versions. This gives you more choice if you need extra space for apps and media. The Galaxy S20 Ultra is available with 128GB storage but includes a microSDXC slot for adding more memory externally.
SIM Card Types
The Galaxy S20 Ultra uses dual physical SIM cards, which is helpful if you want two separate phone numbers with physical SIMs. The Galaxy S21 Ultra 5G supports one physical SIM plus an eSIM, which can be convenient for switching carriers without swapping SIM cards.
Physical Dimensions
The Galaxy S20 Ultra is slightly taller at 166.9 mm compared to 165.1 mm for the Galaxy S21 Ultra 5G, and a bit wider at 76 mm versus 75.6 mm. The S21 Ultra 5G is marginally thicker at 8.9 mm compared to 8.8 mm. The S20 Ultra weighs 222 g, while the S21 Ultra 5G weighs 227 g. These differences may affect handling preferences.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy S20 Ultra or Galaxy S21 Ultra 5G: which should you buy?
Buy the Galaxy S20 Ultra if
- you want a lighter build (222 g vs 227 g)
- you want a memory card slot
Buy the Galaxy S21 Ultra 5G if
- you want to spend less: it starts at £268.86, £0.59 less than the Galaxy S20 Ultra
- you want 5G
What our customers say
Customers who bought the Galaxy S20 Ultra often highlight its good battery life and camera quality. Many say it looks like new and works well for everyday use, with some praising its speed and condition after purchase. A few mention minor setup issues or screen concerns, but overall satisfaction is high, with buyers appreciating the size and reliability of the phone.
Reviews for the Galaxy S21 Ultra 5G mention its excellent condition, often looking almost new even in good condition options. Customers value its speed, reliability, and suitability for their needs. Some note the 5G capability and storage options as positives. There are mixed experiences with a few reporting problems, but many feel it is a great choice for a refurbished phone with modern features.
The Galaxy S20 Ultra suits those who want a larger screen and microSD card support with reliable battery life. The Galaxy S21 Ultra 5G is ideal for buyers looking for 5G connectivity, more storage options, and software updates.
Galaxy S20 Ultra vs Galaxy S21 Ultra 5G FAQs
Galaxy S20 Ultra vs S21 Ultra 5G comes down to the screen size, software updates and mobile network. Screen size: 6.9 inch on the Galaxy S20 Ultra, 6.8 inch on the Galaxy S21 Ultra 5G. Software updates: Ended Mar 2025 on the Galaxy S20 Ultra, Ended Feb 2026 on the Galaxy S21 Ultra 5G.
The Galaxy S21 Ultra 5G is cheaper refurbished, from £268.86 compared with £269.45 for the Galaxy S20 Ultra.
Both have the same battery: 5000 mAh.
Both have the same main camera: 108 megapixels.
Updates for the Galaxy S20 Ultra ended in Mar 2025. Updates for the Galaxy S21 Ultra 5G ended in Feb 2026.
The Galaxy S21 Ultra 5G adds 5G. Refurbished, it costs £0.59 less (from £268.86 vs £269.45).
Refurbished, the Galaxy S20 Ultra comes in 128GB, and the Galaxy S21 Ultra 5G in 128GB, 256GB and 512GB.
