Galaxy A21s vs Galaxy S20 Ultra 5G
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Galaxy A21s
Starting at
£60.24£219.00 new
Galaxy S20 Ultra 5G
Starting at
£233.80£1,220.00 newWhat's the difference between the Galaxy A21s and Galaxy S20 Ultra 5G?
Galaxy A21s vs S20 Ultra 5G comes down to the RAM, screen size and screen type. Refurbished, the Galaxy A21s starts at £60.24, £173.56 less than the Galaxy S20 Ultra 5G.
Refurbished from
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Screen size
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- The Galaxy S20 Ultra 5G has more RAM: 12 GB vs 3 GB.
- The Galaxy S20 Ultra 5G has a bigger screen: 6.9 inch vs 6.5 inch.
- The Galaxy S20 Ultra 5G has an OLED screen.
Galaxy A21s vs Galaxy S20 Ultra 5G specs
The Galaxy A21s and Galaxy S20 Ultra 5G both come from 2020 but serve different user needs. The Galaxy A21s suits everyday use with its simpler performance, a 6.5 inch screen, and good battery life. It's a solid choice if you want a phone for daily tasks and basic photography. The Galaxy S20 Ultra 5G offers a much larger and sharper 6.9 inch screen, more memory, and higher resolution cameras, making it ideal if you want a device for intensive apps, 5G connectivity, and detailed photos or videos. Both have the same battery size but differ in network support and storage options. Your choice depends on whether you want a straightforward phone or one built for demanding multimedia and multitasking.
Galaxy A21s vs Galaxy S20 Ultra 5G price
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Galaxy A21s vs Galaxy S20 Ultra 5G battery life and software updates
Both phones share some features but also differ in key areas that affect long-term use.
Battery Capacity
Both the Galaxy A21s and Galaxy S20 Ultra 5G have a 5000 mAh battery. This means you can expect similar battery life from each, which suits users who want a phone that lasts through a full day of use without frequent recharging.
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Fast charging
Foldable
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Galaxy A21s vs Galaxy S20 Ultra 5G performance
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Galaxy A21s vs Galaxy S20 Ultra 5G screen
Screen quality varies significantly between the two phones, affecting how you see content and interact with apps. Differences in size, resolution, and screen type shape the viewing experience.
Screen Size
The Galaxy A21s has a 6.5 inch screen, offering a comfortable size for everyday use and portability. The Galaxy S20 Ultra 5G has a larger 6.9 inch screen, giving more room for videos, games, and multitasking. Choose based on how much screen space you want.
Resolution
The Galaxy A21s features a 720 x 1600 resolution, which suits standard viewing and basic video streaming. The Galaxy S20 Ultra 5G's 1440 x 3200 resolution delivers much sharper images and finer detail, which benefits those who prefer high-definition content.
Screen Type
The Galaxy A21s uses a PLS LCD screen, which is good for everyday use and brightness in most lighting. The Galaxy S20 Ultra 5G has a Dynamic AMOLED 2X screen, providing richer colours, deeper blacks, and smoother visuals, ideal for media enthusiasts.
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Resolution
Screen size
Screen type
Galaxy A21s vs Galaxy S20 Ultra 5G camera
Camera quality affects photo and video detail, and front cameras impact selfies and video calls. These differences matter depending on how important photography is to you.
Main Camera Resolution
The Galaxy A21s has a 48 megapixel main camera, suitable for everyday photos and casual photography. The Galaxy S20 Ultra 5G offers a 108 megapixel main camera, capturing much more detail and enabling larger, more detailed images for photography enthusiasts.
Front Camera Resolution
The Galaxy A21s features a 13 megapixel front camera, which works well for video calls and selfies. The Galaxy S20 Ultra 5G has a 40 megapixel front camera, providing higher detail and sharper images for users who prioritise self-portraits or video conferencing.
Camera type
Front camera
Main camera
Galaxy A21s vs Galaxy S20 Ultra 5G size and design
Other factors like connectivity, size, and storage affect daily convenience and how the phones fit your lifestyle. These details help decide which phone matches your habits.
Mobile Network
The Galaxy A21s supports 4G networks, which is common for everyday internet use and calls. The Galaxy S20 Ultra 5G supports 5G, offering faster data speeds and lower latency where available, which benefits users wanting quicker downloads or streaming.
Storage Options
The Galaxy A21s comes in 32GB and 64GB storage options, suitable for basic app use and media storage. The Galaxy S20 Ultra 5G is available with 128GB storage, which is better for users who store many apps, photos, or videos.
SIM Card Options
The Galaxy A21s uses a physical SIM card. The Galaxy S20 Ultra 5G supports both a physical SIM and an eSIM, allowing for more flexible carrier setups or dual SIM use, which can be helpful for work and personal numbers.
Size and Weight
The Galaxy A21s measures 163.7 mm in height, 75.3 mm in width, and weighs 192 g, making it lighter and slightly smaller. The Galaxy S20 Ultra 5G is 166.9 mm tall, 76 mm wide, and weighs 222 g, which gives a larger feel but may be less comfortable for one-handed use.
Memory
The Galaxy A21s has 3 GB of RAM, fitting everyday apps and basic multitasking. The Galaxy S20 Ultra 5G offers 12 GB of RAM, which keeps more apps open and supports intensive multitasking or gaming.
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Galaxy A21s or Galaxy S20 Ultra 5G: which should you buy?
Buy the Galaxy A21s if
- you want to spend less: it starts at £60.24, £173.56 less than the Galaxy S20 Ultra 5G
- you want a lighter build (192 g vs 222 g)
Buy the Galaxy S20 Ultra 5G if
- you want more RAM (12 GB vs 3 GB)
- you want a bigger screen (6.9 inch vs 6.5 inch)
- you want an OLED screen
What our customers say
Customers who choose the Galaxy A21s appreciate its condition and reliability for everyday use. Many say it looks like new and performs well for basic needs. Some have noted initial setup issues but found the phone to be good once running. Users like its size and battery life, making it suitable for daily tasks and casual photography. The storage options of 32GB or 64GB are enough for simple app collections and media.
The Galaxy S20 Ultra 5G receives praise for its excellent condition and impressive screen quality. Customers value the 12 GB RAM for smooth multitasking and the high-resolution cameras for detailed photos. The larger and sharper screen is frequently mentioned as a highlight, and many find the phone meets their needs for demanding use. A few mention that the battery life could be better given the phone's features, but overall satisfaction is high. Storage at 128GB supports users with larger media and app collections.
In summary, the Galaxy A21s suits those seeking a straightforward, well-conditioned phone for everyday use with good battery life. The Galaxy S20 Ultra 5G fits users who want a premium screen, high memory, 5G connectivity, and superior camera detail for multimedia and multitasking.
Galaxy A21s vs Galaxy S20 Ultra 5G FAQs
Galaxy A21s vs S20 Ultra 5G comes down to the RAM, screen size and screen type. The Galaxy S20 Ultra 5G has more RAM: 12 GB vs 3 GB. The Galaxy S20 Ultra 5G has a bigger screen: 6.9 inch vs 6.5 inch.
The Galaxy A21s is cheaper refurbished, from £60.24 compared with £233.80 for the Galaxy S20 Ultra 5G.
Both have the same battery: 5000 mAh.
The Galaxy S20 Ultra 5G has a higher-resolution main camera: 108 megapixels vs 48 megapixels.
The Galaxy A21s no longer gets updates. Updates for the Galaxy S20 Ultra 5G ended in Mar 2025.
Refurbished, the Galaxy A21s comes in 32GB and 64GB, and the Galaxy S20 Ultra 5G in 128GB.
