Galaxy S21 Ultra 5G vs Oppo Find X3 Lite
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Galaxy S21 Ultra 5G
Starting at
£268.86£1,800.00 new
Oppo Find X3 Lite
Starting at
£450.00What's the difference between the Galaxy S21 Ultra 5G and Oppo Find X3 Lite?
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite comes down to the chipset, RAM and battery. Refurbished, the Galaxy S21 Ultra 5G starts at £268.86, £181.14 less than the Oppo Find X3 Lite.
Refurbished from
Chipset
RAM
Battery
Screen size
Screen type
- Chipset: Exynos 2100 (5 nm), Qualcomm SM8350 Snapdragon 888 5G (5 nm) on the Galaxy S21 Ultra 5G, Qualcomm SM7250 Snapdragon 765G 5G (7 nm) on the Oppo Find X3 Lite.
- The Galaxy S21 Ultra 5G has more RAM: 12 GB vs 8 GB.
- The Galaxy S21 Ultra 5G has a bigger battery: 5000 mAh vs 4300 mAh.
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite specs
The Galaxy S21 Ultra 5G and Oppo Find X3 Lite both run Android and support 5G but they suit different needs. The Galaxy S21 Ultra 5G has a larger screen with higher resolution and refresh rate, more RAM, and a bigger battery, fitting users who want a premium experience with detailed photos and smooth performance. The Oppo Find X3 Lite offers a lighter and smaller design with a good screen and cameras, ideal for everyday use or those preferring a more compact phone. Both are unlocked and offer dual SIM options but with different SIM types and storage choices.
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite price
Colour
Storage
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite battery life and software updates
Durability covers battery capacity, software updates, and OS basics. These affect how long the phone runs, how current its software stays, and general reliability.
Battery Capacity
The Galaxy S21 Ultra 5G has a 5000 mAh battery, making it suitable for longer use between charges. The Oppo Find X3 Lite has a 4300 mAh battery, which still supports a full day of use but may require more frequent charging for heavier users.
Battery
Foldable
Ip rating
Software updates
Wireless charging
Year of release
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite performance
Performance involves the chipset, RAM, and storage options. These influence speed, multitasking, and how much data or apps you can keep on your phone.
Processor Technology
The Galaxy S21 Ultra 5G uses either the Exynos 2100 or Snapdragon 888 chipset, both built on a 5 nm process, offering strong performance and efficiency. The Oppo Find X3 Lite runs on the Snapdragon 765G chipset made on a 7 nm process, which suits everyday tasks and moderate use.
Memory
With 12 GB of RAM, the Galaxy S21 Ultra 5G is well suited to heavy multitasking, gaming, and demanding apps. The Oppo Find X3 Lite's 8 GB RAM supports smooth everyday use and many apps running at once.
Storage Capacity
The Galaxy S21 Ultra 5G is available in 128GB, 256GB, and 512GB storage options, allowing for more space for apps, photos, and files. The Oppo Find X3 Lite comes with 128GB storage, which is enough for general use and moderate media storage.
Chipset
RAM
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite screen
Screen quality affects how you see content, including sharpness, size, and smoothness of motion. This matters for watching videos, gaming, or scrolling.
Screen Size and Resolution
The Galaxy S21 Ultra 5G has a 6.8 inch Dynamic AMOLED 2X screen with a resolution of 1440 x 3200, providing a large and sharp display for detailed viewing. The Oppo Find X3 Lite has a 6.43 inch AMOLED screen with 1080 x 2400 resolution, which is good for everyday use and fits comfortably in one hand.
Refresh Rate
At 120 Hz, the Galaxy S21 Ultra 5G offers very smooth motion when scrolling or gaming. The Oppo Find X3 Lite's 90 Hz refresh rate also delivers fluid visuals but with slightly less smoothness compared to the Galaxy.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite camera
Audiovisual features include camera resolution for photos and videos. Higher megapixels can capture more detail, which matters for photography enthusiasts.
Front Camera Detail
The Galaxy S21 Ultra 5G has a 40 megapixel front camera, suited to very detailed selfies and video calls. The Oppo Find X3 Lite's 32 megapixel front camera provides clear and vibrant self-portraits and video chats.
Main Camera Resolution
With a 108 megapixel main camera, the Galaxy S21 Ultra 5G is designed for capturing highly detailed photos. The Oppo Find X3 Lite offers a 64 megapixel main camera, which is effective for everyday photography and producing good quality images.
Camera type
Front camera
Main camera
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite size and design
Miscellaneous specs cover physical size, weight, SIM options, and network compatibility. These factors affect comfort, connectivity, and how you use your phone daily.
Size and Weight
The Galaxy S21 Ultra 5G is larger and heavier, measuring 165.1 mm tall, 75.6 mm wide, 8.9 mm deep, and weighing 227 g. This suits users who prefer a substantial device with a big screen. The Oppo Find X3 Lite is more compact and lighter at 159.1 mm tall, 73.4 mm wide, 7.9 mm deep, and 172 g, which is easier to hold and carry.
SIM Card Options
The Galaxy S21 Ultra 5G supports a Physical SIM plus eSIM, allowing flexible mobile plans and easier switching without a physical card. The Oppo Find X3 Lite uses dual Physical SIMs, ideal if you want to use two separate SIM cards.
Carrier and Network
Both phones are unlocked and support 5G networks, so you can choose any compatible UK carrier and enjoy fast mobile data.
Carrier compatibility
Connector
Depth
Height
Mobile network
Release date
SD card slot
SIM card
Weight
Width
Galaxy S21 Ultra 5G or Oppo Find X3 Lite: which should you buy?
Buy the Galaxy S21 Ultra 5G if
- you want to spend less: it starts at £268.86, £181.14 less than the Oppo Find X3 Lite
- you want more RAM (12 GB vs 8 GB)
- you want a bigger battery (5000 mAh vs 4300 mAh)
Buy the Oppo Find X3 Lite if
- you want a lighter build (172 g vs 227 g)
What our customers say
Customers say the Galaxy S21 Ultra 5G looks almost new and performs like a new phone with fast and reliable operation. Many praise its screen and camera quality and appreciate the large battery and smooth performance. Some note minor cosmetic marks depending on the condition chosen. Its size and weight are noticeable but accepted for the features it offers. Users mention the phone feels premium and suits those wanting a high-end experience without paying full price.
The Oppo Find X3 Lite is well received for its neat design and good camera quality. Customers find it comfortable to hold due to its lighter weight and smaller size. Battery life is described as average, with some needing to charge more often than with previous phones. The phone runs everyday apps smoothly and handles dual SIM use without issues. Overall, customers appreciate its balance of features and price, especially for those looking for a simpler device with solid performance.
Both phones suit different users: the Galaxy S21 Ultra 5G fits those needing a premium display, more memory, and advanced camera detail. The Oppo Find X3 Lite suits people who prefer a lighter, more compact phone for daily tasks with good camera and network support.
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite FAQs
Galaxy S21 Ultra 5G vs Oppo Find X3 Lite comes down to the chipset, RAM and battery. Chipset: Exynos 2100 (5 nm), Qualcomm SM8350 Snapdragon 888 5G (5 nm) on the Galaxy S21 Ultra 5G, Qualcomm SM7250 Snapdragon 765G 5G (7 nm) on the Oppo Find X3 Lite. 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 £450 for the Oppo Find X3 Lite.
The Galaxy S21 Ultra 5G has a bigger battery: 5000 mAh vs 4300 mAh.
The Galaxy S21 Ultra 5G has a higher-resolution main camera: 108 megapixels vs 64 megapixels.
Updates for the Galaxy S21 Ultra 5G ended in Feb 2026. We don't have published update dates for the Oppo Find X3 Lite.
Refurbished, the Galaxy S21 Ultra 5G comes in 128GB, 256GB and 512GB, and the Oppo Find X3 Lite in 128GB.
