Galaxy S20 5G vs OnePlus 8 Pro
Shop Samsung Galaxy
Galaxy S20 5G
Starting at
£161.35£899.00 new
OnePlus 8 Pro
Starting at
£177.00What's the difference between the Galaxy S20 5G and OnePlus 8 Pro?
Galaxy S20 5G vs OnePlus 8 Pro comes down to the battery, screen size and screen type. Refurbished, the Galaxy S20 5G starts at £161.35, £15.65 less than the OnePlus 8 Pro.
Refurbished from
Battery
Screen size
Screen type
Main camera
Front camera
- The OnePlus 8 Pro has a bigger battery: 4510 mAh vs 4000 mAh.
- The OnePlus 8 Pro has a bigger screen: 6.78 inch vs 6.2 inch.
- Screen type: Dynamic AMOLED 2X on the Galaxy S20 5G, Fluid AMOLED on the OnePlus 8 Pro.
Galaxy S20 5G vs OnePlus 8 Pro specs
The Galaxy S20 5G and OnePlus 8 Pro, both released in 2020, offer strong performance with 12 GB of RAM and 5G support. The Galaxy S20 5G is more compact with a smaller 6.2 inch screen and a slightly smaller battery at 4000 mAh, making it suited for those who prefer a lighter, pocket-friendly phone with expandable storage via microSDXC. The OnePlus 8 Pro has a larger 6.78 inch screen and a bigger 4510 mAh battery, ideal if you want a roomy display and longer battery capacity but do not need expandable storage. Photography also differs: the OnePlus 8 Pro offers higher megapixel front and main cameras for more detailed shots, while the Galaxy S20 5G provides a balanced camera setup with a 12 megapixel main sensor. Both phones are unlocked and USB-C compatible, so choice depends on your preferences for screen size, battery, storage expansion and camera detail.
Galaxy S20 5G vs OnePlus 8 Pro price
Colour
Storage
- 128GBSold out
- 256GBSold out
Galaxy S20 5G vs OnePlus 8 Pro battery life and software updates
Battery capacity, software updates, and build features shape how long a device lasts day to day and over time. The Galaxy S20 5G and OnePlus 8 Pro share some points but differ in battery size and storage options.
Battery Capacity
The Galaxy S20 5G has a 4000 mAh battery, which suits users who want a solid day of use in a smaller phone. The OnePlus 8 Pro offers a larger 4510 mAh battery, benefiting those who need longer battery life between charges or use power-hungry apps. Battery life depends on your usage but the OnePlus 8 Pro's higher capacity may be better for heavy users.
Battery
Fast charging
Foldable
Software updates
Year of release
Galaxy S20 5G vs OnePlus 8 Pro performance
Chipset
RAM
Galaxy S20 5G vs OnePlus 8 Pro screen
Screen size and resolution impact how you experience media and apps. Both phones use AMOLED technology but differ in size and detail.
Screen Size
The Galaxy S20 5G has a 6.2 inch screen, making it comfortable for one-handed use and easier to carry. The OnePlus 8 Pro has a larger 6.78 inch display, offering more room for watching videos, gaming, or multitasking. If you prefer a bigger viewing area, the OnePlus suits you better.
Screen Resolution and Type
The Galaxy S20 5G's screen resolution is 1440 x 3200, slightly taller than the OnePlus 8 Pro's 1440 x 3168. Both have sharp, clear displays with AMOLED technology. The Galaxy uses Dynamic AMOLED 2X while the OnePlus uses Fluid AMOLED, each providing vibrant colours and deep blacks. Your choice here depends on how much screen size matters more than resolution differences.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S20 5G vs OnePlus 8 Pro camera
Camera specifications differ significantly, affecting photo and video detail for front and main cameras. Both phones have four rear cameras but megapixel counts vary.
Main Camera
The Galaxy S20 5G features a 12 megapixel main camera, which captures good quality photos balancing detail and low-light performance. The OnePlus 8 Pro has a higher resolution 48 megapixel main camera, suitable for users who want more detailed shots and the potential for cropping or zooming in without losing clarity.
Front Camera
For selfies and video calls, the Galaxy S20 5G offers a 10 megapixel front camera. The OnePlus 8 Pro provides a 16 megapixel front camera, giving sharper and more detailed images. Those who prioritise selfie quality may prefer the OnePlus.
Camera type
Front camera
Main camera
Galaxy S20 5G vs OnePlus 8 Pro size and design
Other features affect how the phones fit daily use, including physical size, weight, carrier compatibility and storage options.
Storage and Expansion
Both phones are stocked with 128GB and 256GB storage options, suitable for most users. The Galaxy S20 5G includes a microSDXC slot for expandable storage, which is useful if you want to add more space later. The OnePlus 8 Pro does not have this slot, so you should choose your storage size carefully.
Physical Size and Weight
The Galaxy S20 5G is more compact, measuring 151.7 mm tall, 69.1 mm wide, and 7.9 mm thick, and weighs 163 g. The OnePlus 8 Pro is larger and heavier at 165.3 mm tall, 74.4 mm wide, 8.5 mm thick, and 199 g. If you want a lighter phone that fits easily in one hand or pocket, the Galaxy S20 5G suits you. The OnePlus 8 Pro offers a larger screen but is bulkier.
SIM and Network
Both phones support dual physical SIM cards and 5G networks, giving flexibility for multiple numbers and fast mobile data. They come unlocked, so you can use them with any UK carrier.
Connector Type
Each device uses a USB-C connector for charging and data transfers, compatible with modern accessories and cables.
Carrier compatibility
Connector
Depth
Height
Mobile network
SD card slot
SIM card
Weight
Width
Galaxy S20 5G or OnePlus 8 Pro: which should you buy?
Buy the Galaxy S20 5G if
- you want to spend less: it starts at £161.35, £15.65 less than the OnePlus 8 Pro
- you want a lighter build (163 g vs 199 g)
- you want a memory card slot
Buy the OnePlus 8 Pro if
- you want a bigger battery (4510 mAh vs 4000 mAh)
- you want a bigger screen (6.78 inch vs 6.2 inch)
- you want a higher-resolution main camera (48 megapixels vs 12 megapixels)
What our customers say
Customers say the Galaxy S20 5G looks and works like new, often praising its excellent condition and reliable performance. Many note its fast speed, good battery life, and quality camera. Some find the battery lasts all day, while a few mention it runs warm or the battery life could be better. Users appreciate the phone's manageable size, ease of setup, and expandable storage. The phone suits those who want a trusted Samsung device with a balance of power and size.
The OnePlus 8 Pro receives praise for being in better condition than expected and working perfectly. Customers like its high specifications and good price. Some mention the battery drains quickly or the phone can get hot, while others find it easy to set up despite missing a manual. The phone suits users who want a large screen, strong cameras, and high RAM, and who are comfortable choosing storage carefully since it does not have expandable memory.
Both phones appeal to buyers looking for premium refurbished options from 2020. The Galaxy S20 5G suits those seeking a lighter, more compact phone with expandable storage, while the OnePlus 8 Pro fits users who prioritise a larger display and camera resolution.
Galaxy S20 5G vs OnePlus 8 Pro FAQs
Galaxy S20 5G vs OnePlus 8 Pro comes down to the battery, screen size and screen type. The OnePlus 8 Pro has a bigger battery: 4510 mAh vs 4000 mAh. The OnePlus 8 Pro has a bigger screen: 6.78 inch vs 6.2 inch.
The Galaxy S20 5G is cheaper refurbished, from £161.35 compared with £177 for the OnePlus 8 Pro.
The OnePlus 8 Pro has a bigger battery: 4510 mAh vs 4000 mAh.
The OnePlus 8 Pro has a higher-resolution main camera: 48 megapixels vs 12 megapixels.
Updates for the Galaxy S20 5G ended in Mar 2025. We don't have published update dates for the OnePlus 8 Pro.
Refurbished, the Galaxy S20 5G comes in 128GB, and the OnePlus 8 Pro in 128GB and 256GB.
