Galaxy S10 5G vs Galaxy S20 Ultra
Shop Samsung Galaxy
Galaxy S10 5G
Starting at
£235.29£1,099.00 new
Galaxy S20 Ultra
Starting at
£269.45£1,199.99 newWhat's the difference between the Galaxy S10 5G and Galaxy S20 Ultra?
Galaxy S10 5G vs S20 Ultra comes down to the RAM, battery and screen size. Refurbished, the Galaxy S10 5G starts at £235.29, £34.16 less than the Galaxy S20 Ultra. The Galaxy S20 Ultra is the newer model, released in 2020.
Refurbished from
RAM
Battery
Screen size
Screen type
Main camera
- The Galaxy S20 Ultra has more RAM: 12 GB vs 8 GB.
- The Galaxy S20 Ultra has a bigger battery: 5000 mAh vs 4500 mAh.
- The Galaxy S20 Ultra has a bigger screen: 6.9 inch vs 6.7 inch.
Galaxy S10 5G vs Galaxy S20 Ultra specs
The Galaxy S10 5G and Galaxy S20 Ultra differ in screen size, camera resolution, memory, and storage options, which shape their appeal. The Galaxy S20 Ultra offers a larger 6.9 inch Dynamic AMOLED 2X screen and higher megapixel counts on both front and main cameras, suiting those who want detail-rich photos and a more immersive display. The Galaxy S10 5G has a slightly smaller 6.7 inch Dynamic AMOLED screen and simpler camera setup, fitting users who prefer a lighter device with solid everyday performance. Storage and memory also differ: the S10 5G provides 256GB storage and 8 GB RAM, good for everyday use, while the S20 Ultra has 128GB and 12 GB RAM, useful if you keep many apps open. Battery size and network type vary, with the S10 5G supporting 5G and a 4500 mAh battery, and the S20 Ultra having a larger 5000 mAh battery but 4G network. Each suits different priorities in size, camera, and connectivity.
Galaxy S10 5G vs Galaxy S20 Ultra price
Galaxy S10 5G vs Galaxy S20 Ultra battery life and software updates
Battery capacity, network support, and software updates influence how long a phone keeps working well day to day. These aspects differ between the Galaxy S10 5G and Galaxy S20 Ultra.
Battery Capacity
The Galaxy S20 Ultra has a 5000 mAh battery, which provides more power capacity for longer use between charges. The Galaxy S10 5G has a 4500 mAh battery, still substantial but smaller. If long battery life in daily use is a priority, the S20 Ultra may suit you better.
Network Compatibility
The Galaxy S10 5G supports 5G mobile networks, offering access to faster network speeds where 5G coverage is available. The Galaxy S20 Ultra supports 4G networks, which remain widely used and reliable. Choose the S10 5G if 5G connectivity is important to you.
Software Updates
This means both devices run versions of Android that may not include the newest features or security patches.
Battery
Foldable
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Year of release
Galaxy S10 5G vs Galaxy S20 Ultra performance
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RAM
Galaxy S10 5G vs Galaxy S20 Ultra screen
Screen size, resolution, and technology affect how you view videos, browse, and interact with apps. The Galaxy S10 5G and Galaxy S20 Ultra have notable differences in their displays.
Screen Size and Resolution
The Galaxy S20 Ultra has a larger 6.9 inch screen with a resolution of 1440 x 3200 pixels. This makes it well suited for watching videos or multitasking where a bigger display helps. The Galaxy S10 5G offers a 6.7 inch screen with a resolution of 1440 x 3040 pixels, still high quality but slightly smaller and with a bit less height resolution.
Screen Technology
The Galaxy S10 5G uses a Dynamic AMOLED screen, while the Galaxy S20 Ultra features Dynamic AMOLED 2X technology. The 2X version may offer improvements in brightness and smoothness, which can enhance viewing in bright conditions or when scrolling quickly.
Refresh rate
Resolution
Screen size
Screen type
Galaxy S10 5G vs Galaxy S20 Ultra camera
Camera resolution plays a big role in capturing photos and selfies. The front and main cameras differ between these two models, affecting image detail and potential use cases.
Front Camera Resolution
The Galaxy S20 Ultra has a 40 megapixel front camera, which captures more detail for selfies and video calls. The Galaxy S10 5G has a 10 megapixel front camera, suitable for everyday use but with less resolution for high-detail selfies.
Main Camera Resolution
The Galaxy S20 Ultra features a 108 megapixel main camera, designed for photos with very high resolution and detail. The Galaxy S10 5G has a 12 megapixel main camera, which offers good quality images for everyday photography needs.
Camera type
Front camera
Main camera
Galaxy S10 5G vs Galaxy S20 Ultra size and design
Physical size, weight, storage expandability, SIM options, and carrier compatibility affect daily handling and flexibility. The Galaxy S10 5G and Galaxy S20 Ultra differ in these areas.
Device Size and Weight
The Galaxy S20 Ultra is larger and heavier, measuring 166.9 mm tall, 76 mm wide, and weighing 222 g. The Galaxy S10 5G is smaller and lighter at 162.6 mm tall, 77.1 mm wide, and 157 g. If you prefer a more compact or lighter phone, the S10 5G fits better.
Storage and Memory
The Galaxy S10 5G comes with 256GB of storage, offering more built-in space for apps, photos, and files. The Galaxy S20 Ultra has 128GB storage but includes a microSDXC card slot, allowing you to add extra memory cards. This gives flexibility if you want to expand storage later.
SIM Card Options
The Galaxy S10 5G uses a single physical SIM card. The Galaxy S20 Ultra supports dual physical SIM cards, which can be useful if you want to use two phone numbers or carriers simultaneously.
Carrier Compatibility
Both phones are sold unlocked, so you can use them with any compatible network provider.
Carrier compatibility
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Mobile network
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Galaxy S10 5G or Galaxy S20 Ultra: which should you buy?
Buy the Galaxy S10 5G if
- you want to spend less: it starts at £235.29, £34.16 less than the Galaxy S20 Ultra
- you want 5G
- you want a lighter build (157 g vs 222 g)
Buy the Galaxy S20 Ultra if
- you want more RAM (12 GB vs 8 GB)
- you want a bigger battery (5000 mAh vs 4500 mAh)
- you want a bigger screen (6.9 inch vs 6.7 inch)
What our customers say
Customers who bought the Galaxy S10 5G appreciate its condition and performance, often describing the phone as looking and feeling like new. Many mention good battery life and overall reliability for everyday use. Some highlight smooth app transfers and satisfactory value. A few note that 5G coverage may not be strong and mention minor language setting quirks, but these have not affected their regular use.
Galaxy S20 Ultra customers praise the phone's condition and camera features. Many say the phone runs well and loads apps quickly. Some have experienced issues with leftover data from previous ownership or screen problems, but the majority report satisfaction with battery life, camera quality, and overall performance. The larger screen and dual SIM capability are noted positively. Several customers have bought from PhoneMart more than once, indicating trust in the device quality.
Both devices attract buyers looking for a reliable refurbished phone. The Galaxy S10 5G suits those wanting a lighter, more compact phone with 5G support and ample built-in storage. The Galaxy S20 Ultra appeals to users who prioritise a large, high-resolution screen, advanced cameras, and flexible SIM and storage options.
Galaxy S10 5G vs Galaxy S20 Ultra FAQs
Galaxy S10 5G vs S20 Ultra comes down to the RAM, battery and screen size. The Galaxy S20 Ultra has more RAM: 12 GB vs 8 GB. The Galaxy S20 Ultra has a bigger battery: 5000 mAh vs 4500 mAh.
The Galaxy S10 5G is cheaper refurbished, from £235.29 compared with £269.45 for the Galaxy S20 Ultra.
The Galaxy S20 Ultra has a bigger battery: 5000 mAh vs 4500 mAh.
The Galaxy S20 Ultra has a higher-resolution main camera: 108 megapixels vs 12 megapixels.
The Galaxy S10 5G no longer gets updates. Updates for the Galaxy S20 Ultra ended in Mar 2025.
The Galaxy S20 Ultra adds more RAM (12 GB vs 8 GB), a bigger battery (5000 mAh vs 4500 mAh) and a bigger screen (6.9 inch vs 6.7 inch). Refurbished, it costs £34.16 more (from £269.45 vs £235.29).
Refurbished, the Galaxy S10 5G comes in 256GB, and the Galaxy S20 Ultra in 128GB.
