Galaxy S21 Ultra 5G vs OnePlus 10 Pro
Shop Samsung Galaxy
Galaxy S21 Ultra 5G
Starting at
£268.86£1,316.00 new
OnePlus 10 Pro
Starting at
£271.00What's the difference between the Galaxy S21 Ultra 5G and OnePlus 10 Pro?
Galaxy S21 Ultra 5G vs OnePlus 10 Pro comes down to the chipset, RAM and screen size. Refurbished, the Galaxy S21 Ultra 5G starts at £268.86, £2.14 less than the OnePlus 10 Pro. The OnePlus 10 Pro is the newer model, released in 2022.
Refurbished from
Chipset
RAM
Screen size
Screen type
Main camera
- Chipset: Exynos 2100 (5 nm), Qualcomm SM8350 Snapdragon 888 5G (5 nm) on the Galaxy S21 Ultra 5G, Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm) on the OnePlus 10 Pro.
- The Galaxy S21 Ultra 5G has more RAM: 12 GB vs 8 GB.
- Screen size: 6.8 inch on the Galaxy S21 Ultra 5G, 6.7 inch on the OnePlus 10 Pro.
Galaxy S21 Ultra 5G vs OnePlus 10 Pro specs
The Galaxy S21 Ultra 5G and OnePlus 10 Pro both offer strong performance and features but they suit different priorities. The Galaxy S21 Ultra 5G has more RAM and higher resolution main and front cameras which suits users who want more memory for multitasking and detailed photos. The OnePlus 10 Pro has a slightly newer chipset and a marginally smaller lighter design that fits those who prefer a more compact phone with the Snapdragon 8 Gen 1 chipset.
Galaxy S21 Ultra 5G vs OnePlus 10 Pro price
Colour
Storage
- 128GBSold out
- 256GBSold out
Galaxy S21 Ultra 5G vs OnePlus 10 Pro battery life and software updates
Durability covers battery capacity software updates and physical design aspects that influence how long a phone lasts and stays supported. Both phones match in battery size and software updates but they differ in SIM card options and physical dimensions.
Battery Capacity
Both the Galaxy S21 Ultra 5G and OnePlus 10 Pro have a 5000 mAh battery. This means you can expect similar endurance from either device in terms of battery size suitable for a full day of typical use.
Software Updates
This ensures both devices can run current software which is important for security and accessing the newest features.
SIM Card Options
The Galaxy S21 Ultra 5G offers a Physical SIM plus eSIM setup which is handy if you want to keep a physical SIM and add a digital line. The OnePlus 10 Pro uses dual Physical SIMs which suits users managing two physical SIM cards without relying on eSIM.
Size and Weight
The OnePlus 10 Pro is slightly smaller and lighter measuring 163 mm tall 73.9 mm wide and weighing 201 g. The Galaxy S21 Ultra 5G is larger and heavier at 165.1 mm tall 75.6 mm wide and 227 g. If you prefer a more compact and lighter phone the OnePlus 10 Pro fits better.
Battery
Fast charging
Foldable
Ip rating
Software updates
Wireless charging
Year of release
Galaxy S21 Ultra 5G vs OnePlus 10 Pro performance
Performance depends on the chipset RAM and storage options which determine how smoothly the phone runs tasks and apps. Each device suits different user needs based on these specs.
Processor Chipset
The Galaxy S21 Ultra 5G runs on either the Exynos 2100 or Snapdragon 888 both made on a 5 nm process. The OnePlus 10 Pro has the Snapdragon 8 Gen 1 chipset built on a 4 nm process. This means the OnePlus 10 Pro has a newer generation chipset which could provide improvements in power efficiency and processing capabilities for demanding apps.
RAM Capacity
Galaxy S21 Ultra 5G includes 12 GB of RAM which supports more intensive multitasking and keeping multiple apps open. The OnePlus 10 Pro comes with 8 GB RAM suitable for everyday use and smooth performance for most users.
Storage Options
The Galaxy S21 Ultra 5G is available in 128GB 256GB and 512GB options giving you more storage choices especially if you need extra space for media or apps. The OnePlus 10 Pro is stocked in 128GB and 256GB variants which covers typical storage needs.
Chipset
RAM
Galaxy S21 Ultra 5G vs OnePlus 10 Pro screen
Screen quality affects how you view content daily. Both phones offer high refresh rates and detailed resolutions with subtle differences in size and display technology that suit different preferences.
Refresh Rate
Both phones have a 120 Hz refresh rate which means smooth scrolling and animations for gaming and general use.
Resolution and Size
The Galaxy S21 Ultra 5G has a 6.8 inch screen with a 1440 x 3200 resolution offering a slightly larger viewing area ideal for watching videos or multitasking. The OnePlus 10 Pro has a 6.7 inch screen with a resolution of 1440 x 3216 providing a marginally higher pixel count but a slightly smaller display size.
Screen Type
The Galaxy S21 Ultra 5G uses Dynamic AMOLED 2X while the OnePlus 10 Pro features LTPO2 Fluid AMOLED. Both are AMOLED screens known for vivid colours and deep blacks but the LTPO2 technology may help with adaptive refresh rates potentially saving battery during less demanding use.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S21 Ultra 5G vs OnePlus 10 Pro camera
Audiovisual specs focus on the camera capabilities influencing how detailed your photos and video calls will be. Each phone targets different user priorities with their sensor sizes.
Main Camera Resolution
The Galaxy S21 Ultra 5G has a 108 megapixel main camera allowing you to capture highly detailed photos which is great if you often zoom in or print images. The OnePlus 10 Pro offers a 48 megapixel main camera which captures good detail and is suitable for everyday photography.
Front Camera Resolution
For selfies and video calls the Galaxy S21 Ultra 5G has a 40 megapixel front camera which supports sharper self-portraits and clearer video chats. The OnePlus 10 Pro's front camera is 32 megapixels still delivering quality images but with fewer pixels.
Camera type
Front camera
Main camera
Galaxy S21 Ultra 5G vs OnePlus 10 Pro size and design
Miscellaneous features include connectivity details and physical measurements that can influence convenience and compatibility with accessories and networks.
Connector Type
The Galaxy S21 Ultra 5G uses a USB-C connector. The OnePlus 10 Pro has a USB Type-C 3.1 connector which may provide faster data transfer speeds if paired with compatible accessories.
SIM Card Setup
The Galaxy S21 Ultra 5G supports one Physical SIM plus eSIM offering flexibility to use a digital SIM line alongside a physical one. The OnePlus 10 Pro supports dual Physical SIMs which is useful if you prefer two physical SIM cards without eSIM.
Dimensions and Weight
The OnePlus 10 Pro is thinner at 8.6 mm compared to 8.9 mm for the Galaxy S21 Ultra 5G. It also weighs 201 g which is lighter than the Galaxy S21 Ultra 5G's 227 g. This makes the OnePlus 10 Pro easier to handle for those who want a lighter phone.
Carrier and Network
Both phones are unlocked and support 5G networks giving you freedom to choose your carrier and fast mobile internet speeds.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy S21 Ultra 5G or OnePlus 10 Pro: which should you buy?
Buy the Galaxy S21 Ultra 5G if
- you want to spend less: it starts at £268.86, £2.14 less than the OnePlus 10 Pro
- you want more RAM (12 GB vs 8 GB)
- you want a higher-resolution main camera (108 megapixels vs 48 megapixels)
Buy the OnePlus 10 Pro if
- you want a lighter build (200.5 g vs 227 g)
- you want the newer model (2022)
What our customers say
Customers say the Galaxy S21 Ultra 5G often looks like new even when bought refurbished with many noting minimal marks and reliable battery performance. Users appreciate its speed and smooth operation and several mention being pleased with the large display and camera quality. Some describe it as a sustainable choice with good multitasking thanks to the 12 GB RAM. A few customers mention issues with battery or device faults but many find it a trustworthy model for demanding use.
For the OnePlus 10 Pro customers find the phone easy to set up and appreciate its newer chipset and compact size. Some report battery life as a downside while others highlight good value and solid performance. The camera and screen get positive remarks for quality and the phone tends to feel fresh and well-made. A few users mention connectivity or screen responsiveness problems but many enjoy the device for everyday use.
The Galaxy S21 Ultra 5G suits those who want more memory and high-resolution cameras for detailed photography and multitasking. The OnePlus 10 Pro suits buyers looking for a lighter smaller phone with a newer chipset and smooth performance in daily tasks.
Galaxy S21 Ultra 5G vs OnePlus 10 Pro FAQs
Galaxy S21 Ultra 5G vs OnePlus 10 Pro comes down to the chipset, RAM and screen size. Chipset: Exynos 2100 (5 nm), Qualcomm SM8350 Snapdragon 888 5G (5 nm) on the Galaxy S21 Ultra 5G, Qualcomm SM8450 Snapdragon 8 Gen 1 (4 nm) on the OnePlus 10 Pro. The Galaxy S21 Ultra 5G has more RAM: 12 GB vs 8 GB.
The Galaxy S21 Ultra 5G is cheaper refurbished, from £268.86 compared with £271 for the OnePlus 10 Pro.
Both have the same battery: 5000 mAh.
The Galaxy S21 Ultra 5G has a higher-resolution main camera: 108 megapixels vs 48 megapixels.
Updates for the Galaxy S21 Ultra 5G ended in Feb 2026. We don't have published update dates for the OnePlus 10 Pro.
Refurbished, the Galaxy S21 Ultra 5G comes in 128GB, 256GB and 512GB, and the OnePlus 10 Pro in 128GB and 256GB.
