Galaxy A21s vs Galaxy S20
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Galaxy A21s
Starting at
£60.24£219.00 new
Galaxy S20
Starting at
£188.75£999.00 newWhat's the difference between the Galaxy A21s and Galaxy S20?
Galaxy A21s vs S20 comes down to the RAM, battery and screen size. Refurbished, the Galaxy A21s starts at £60.24, £128.51 less than the Galaxy S20.
Refurbished from
RAM
Battery
Screen size
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Main camera
- The Galaxy S20 has more RAM: 8 GB vs 3 GB.
- The Galaxy A21s has a bigger battery: 5000 mAh vs 4000 mAh.
- The Galaxy A21s has a bigger screen: 6.5 inch vs 6.2 inch.
Galaxy A21s vs Galaxy S20 specs
The Galaxy A21s and Galaxy S20, both released in 2020, offer different strengths that suit different needs. The Galaxy A21s has a larger battery and screen with higher megapixel counts on both front and main cameras, making it suitable if you want longer use between charges and detailed photos. The Galaxy S20 provides a sharper, brighter screen and more memory, plus a larger storage option, which benefits users who value smoother multitasking and high resolution display quality. Both support 4G and have unlocked SIM options. Your choice depends on whether you prioritise screen quality and performance or battery life and camera detail.
Galaxy A21s vs Galaxy S20 price
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Galaxy A21s vs Galaxy S20 battery life and software updates
Battery capacity and software updates are key to daily use and longevity.
Battery Capacity
The Galaxy A21s has a 5000 mAh battery, which offers longer usage between charges. This suits users who need extended battery life for all-day use without frequent recharging. The Galaxy S20 has a 4000 mAh battery, which still supports a full day of use but may require more regular charging.
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Galaxy A21s vs Galaxy S20 performance
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Galaxy A21s vs Galaxy S20 screen
Screen size, resolution, and display technology affect how content looks and feels. These differences influence who will find each device more comfortable or enjoyable for watching videos, reading, and general use.
Screen Size and Resolution
The Galaxy A21s has a larger 6.5 inch screen with a resolution of 720 x 1600 pixels. This makes it suitable for users who prefer a bigger display for viewing content but with a lower pixel density. The Galaxy S20 offers a 6.2 inch screen with a much higher resolution of 1440 x 3200 pixels, providing a sharper and more detailed image, which benefits those who value clarity and fine detail on screen.
Screen Type
The Galaxy A21s uses a PLS LCD screen, which delivers good colour and brightness for everyday use. The Galaxy S20 features a Dynamic AMOLED 2X screen, offering richer colours, deeper blacks, and higher contrast. This makes the S20 more suited to users who want a vibrant and immersive viewing experience.
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Resolution
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Galaxy A21s vs Galaxy S20 camera
Camera quality is important for capturing photos and videos. Differences in megapixels and camera setup affect the level of detail you can expect from each device.
Front Camera Megapixels
The Galaxy A21s has a 13 megapixel front camera, which will capture more detail in selfies and video calls. This benefits users who prioritise clear self-portraits or video chat quality. The Galaxy S20 front camera has 10 megapixels, still suitable for good quality images but with fewer pixels.
Main Camera Megapixels
The Galaxy A21s includes a 48 megapixel main camera, which captures higher resolution photos with more detail. This suits users who want detailed images for everyday photography. The Galaxy S20 has a 12 megapixel main camera, which still produces good quality photos but with fewer megapixels.
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Main camera
Galaxy A21s vs Galaxy S20 size and design
Other features such as carrier compatibility, size, SIM options, storage, and weight may influence your choice depending on your lifestyle and preferences.
Storage Options
The Galaxy A21s is available in 32GB and 64GB storage options, suitable for everyday apps and media. The Galaxy S20 offers 128GB storage, which is better for users who need more space for apps, photos, and videos without relying heavily on expandable storage.
SIM Card Options
The Galaxy A21s supports a physical SIM card. The Galaxy S20 supports both a physical SIM card and an eSIM, offering more flexibility for users who want to manage multiple phone numbers or switch carriers more easily.
Dimensions and Weight
The Galaxy A21s is slightly larger and heavier, measuring 163.7 mm in height, 75.3 mm in width, 8.9 mm in depth, and weighing 192 g. The Galaxy S20 is smaller and lighter at 161.9 mm height, 73.7 mm width, 7.8 mm depth, and 163 g weight. The S20 may be more comfortable for users who prefer a compact and lightweight phone.
Expandable Storage and Network
Both the Galaxy A21s and Galaxy S20 support microSDXC cards for additional storage and are unlocked for use with any carrier on 4G networks. This suits users who want flexibility in storage expansion and carrier choice.
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Galaxy A21s or Galaxy S20: which should you buy?
Buy the Galaxy A21s if
- you want to spend less: it starts at £60.24, £128.51 less than the Galaxy S20
- you want a bigger battery (5000 mAh vs 4000 mAh)
- you want a bigger screen (6.5 inch vs 6.2 inch)
Buy the Galaxy S20 if
- you want more RAM (8 GB vs 3 GB)
- you want an OLED screen
- you want a lighter build (163 g vs 192 g)
What our customers say
Customers who bought the Galaxy A21s often highlight the phone's excellent condition and quality, with many saying it looks like new. Several mention it works well for everyday use, and the battery life and screen size are appreciated. Some users experienced initial setup issues but found the phone reliable after. The camera detail and overall value for a lower priced device are also noted by users.
Customers of the Galaxy S20 praise its clean condition and lightweight design. Many find the screen quality and performance meet their expectations, with some describing it as looking brand new. A few have experienced technical issues such as screen responsiveness problems or a blacklisted device, but others report flawless operation and satisfaction with storage and features. The S20 suits users who want a high-quality screen and more storage.
Both phones attract buyers looking for good quality refurbished devices. The Galaxy A21s is chosen for a larger screen and battery, while the Galaxy S20 appeals to those wanting a sharper display and more memory.
Galaxy A21s vs Galaxy S20 FAQs
Galaxy A21s vs S20 comes down to the RAM, battery and screen size. The Galaxy S20 has more RAM: 8 GB vs 3 GB. The Galaxy A21s has a bigger battery: 5000 mAh vs 4000 mAh.
The Galaxy A21s is cheaper refurbished, from £60.24 compared with £188.75 for the Galaxy S20.
The Galaxy A21s has a bigger battery: 5000 mAh vs 4000 mAh.
The Galaxy A21s has a higher-resolution main camera: 48 megapixels vs 12 megapixels.
The Galaxy A21s no longer gets updates. Updates for the Galaxy S20 ended in Mar 2025.
Refurbished, the Galaxy A21s comes in 32GB and 64GB, and the Galaxy S20 in 128GB.
