Galaxy S20 5G vs Galaxy S21 5G
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Galaxy S20 5G
Starting at
£161.35£899.00 new
Galaxy S21 5G
Starting at
£171.33£1,290.00 newWhat's the difference between the Galaxy S20 5G and Galaxy S21 5G?
Galaxy S20 5G vs S21 5G comes down to the RAM, software updates and weight. Refurbished, the Galaxy S20 5G starts at £161.35, £9.98 less than the Galaxy S21 5G. The Galaxy S21 5G is the newer model, released in 2021.
Refurbished from
RAM
Software updates
Weight
SD card slot
- The Galaxy S20 5G has more RAM: 12 GB vs 8 GB.
- Software updates: Ended Mar 2025 on the Galaxy S20 5G, Ended Feb 2026 on the Galaxy S21 5G.
- The Galaxy S20 5G has a lighter build: 163 g vs 169 g.
Galaxy S20 5G vs Galaxy S21 5G specs
The Galaxy S20 5G and Galaxy S21 5G share many features like battery size, screen size, and camera resolution, but they suit different users based on a few key differences. The Galaxy S20 5G has more RAM and a higher screen resolution, making it a good choice if you want more detail on screen and extra memory for multitasking. The Galaxy S20 5G includes a microSDXC slot for expandable storage, while the Galaxy S21 5G has a slightly wider and heavier body. Both devices run Android and support 5G connectivity, so they each fit well depending on your priorities.
Galaxy S20 5G vs Galaxy S21 5G price
Colour
Galaxy S20 5G vs Galaxy S21 5G battery life and software updates
Durability covers battery size, software support, and design features that affect daily use and longevity. Both phones have the same battery capacity but differ in software updates and SIM technology.
Battery Capacity
Both the Galaxy S20 5G and Galaxy S21 5G have a 4000 mAh battery. This means you can expect similar battery life from either phone under comparable use, suitable for a full day of typical activities.
SIM Card Options
The Galaxy S21 5G offers both dual physical SIM slots and eSIM support, giving more flexibility for managing multiple numbers or plans without needing a second physical SIM card. The Galaxy S20 5G has dual physical SIM slots but no eSIM.
Battery
Fast charging
Foldable
Software updates
Year of release
Galaxy S20 5G vs Galaxy S21 5G performance
Chipset
RAM
Galaxy S20 5G vs Galaxy S21 5G screen
Screen quality is important for watching videos, browsing, and gaming. Both phones share a fast refresh rate and screen size but differ in resolution and screen width.
Screen Resolution
The Galaxy S20 5G features a 1440 x 3200 resolution, which provides sharper and more detailed images, ideal if you prioritise high clarity for media and text. The Galaxy S21 5G has a 1080 x 2400 resolution, which still delivers good quality but with less pixel density.
Screen Size and Type
Both phones have a 6.2 inch Dynamic AMOLED 2X screen and a 120 Hz refresh rate, offering smooth motion and vibrant colours. This size is comfortable for one-handed use and fits easily in most pockets.
Physical Width
The Galaxy S21 5G is slightly wider at 71.2 mm compared to 69.1 mm on the Galaxy S20 5G. This may affect how the phone feels in your hand or fits in tight pockets, with the S20 being a bit narrower.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S20 5G vs Galaxy S21 5G camera
Camera quality is a key factor for many buyers. Both phones offer similar megapixel counts on their main and front cameras, making them suitable for everyday photography and video calls.
Main Camera
Both the Galaxy S20 5G and Galaxy S21 5G have a 12 megapixel main camera. This resolution supports good detail in photos for social sharing and general use.
Front Camera
Each device features a 10 megapixel front camera, suitable for clear selfies and video chats.
Camera type
Front camera
Main camera
Galaxy S20 5G vs Galaxy S21 5G size and design
Other practical differences include storage expansion, weight, and connectors, which affect everyday handling and convenience.
Expandable Storage
The Galaxy S20 5G includes a microSDXC card slot, allowing you to add more storage easily if you need it. The Galaxy S21 5G does not have this feature, so you will rely on the internal storage options of 128GB or 256GB.
Weight and Dimensions
The Galaxy S20 5G weighs 163 g and measures 69.1 mm wide, while the Galaxy S21 5G weighs 169 g and is 71.2 mm wide. These differences may influence your choice if you prefer a lighter or narrower phone.
Connector Type
Both the Galaxy S20 5G and Galaxy S21 5G use USB Type-C connectors, which provide modern, reversible charging and data transfer ports.
Carrier compatibility
Connector
Depth
Height
Mobile network
SD card slot
SIM card
Weight
Width
Galaxy S20 5G or Galaxy S21 5G: which should you buy?
Buy the Galaxy S20 5G if
- you want to spend less: it starts at £161.35, £9.98 less than the Galaxy S21 5G
- you want more RAM (12 GB vs 8 GB)
- you want a lighter build (163 g vs 169 g)
Buy the Galaxy S21 5G if
- you want the newer model (2021)
What our customers say
Customers say the Galaxy S20 5G looks like new and works perfectly, often praising its fast performance and good battery life. Many highlight how it feels like a reliable phone with a bright, sharp screen and good camera quality. Some users mention occasional heating or battery concerns, but most are very pleased with its condition and responsiveness. The microSD slot is appreciated by those who want extra storage. Overall, the Galaxy S20 5G suits buyers who want a phone with more RAM and sharper screen detail.
Reviews for the Galaxy S21 5G note excellent condition and a nearly new appearance with minimal wear. Users enjoy its smooth performance and battery life, and some appreciate the dual SIM and eSIM feature for managing multiple numbers. The phone is described as reliable and good quality, with a screen and camera that meet daily needs. Some customers mention regional software differences affecting features like Samsung Pay, but most are happy with the phone's look and function. The Galaxy S21 5G fits those who want the latest software updates and flexible SIM options.
Both phones have strong customer satisfaction and suit different needs. Choose the Galaxy S20 5G if you value screen resolution and RAM for multitasking. Pick the Galaxy S21 5G if you prefer up-to-date software and eSIM support.
Galaxy S20 5G vs Galaxy S21 5G FAQs
Galaxy S20 5G vs S21 5G comes down to the RAM, software updates and weight. The Galaxy S20 5G has more RAM: 12 GB vs 8 GB. Software updates: Ended Mar 2025 on the Galaxy S20 5G, Ended Feb 2026 on the Galaxy S21 5G.
The Galaxy S20 5G is cheaper refurbished, from £161.35 compared with £171.33 for the Galaxy S21 5G.
Both have the same battery: 4000 mAh.
Both have the same main camera: 12 megapixels.
Updates for the Galaxy S20 5G ended in Mar 2025. Updates for the Galaxy S21 5G ended in Feb 2026.
The Galaxy S21 5G is newer, but the main specs we compare are the same. Refurbished, it costs £9.98 more (from £171.33 vs £161.35).
Refurbished, the Galaxy S20 5G comes in 128GB, and the Galaxy S21 5G in 128GB and 256GB.
