Samsung Galaxy S21 Ultra Series
Large 120 Hz QHD+ flagship
The Samsung Galaxy S21 Ultra 5G Series is built for users who want the most advanced display and camera setup from the S21 generation, without compromising on performance or battery endurance. Its 6.8‑inch Edge Dynamic AMOLED 2X Infinity‑O display offers QHD+ resolution (up to 3,200 × 1,440 px), an adaptive 10–120 Hz refresh rate and HDR10+ support, so games, streaming and scrolling all look extremely sharp, fluid and bright. High peak brightness and Samsung’s tuning provide rich contrast and vivid, accurate colours, making the S21 Ultra well suited to both indoor use and direct sunlight.
Premium design with IP68 protection
The S21 Ultra Series uses a Gorilla Glass Victus front and back with an aluminium frame, paired with Samsung’s “Contour Cut” camera housing that blends the large quad‑camera module into the frame for a more integrated look. Despite its size, the curved‑edge display, refined contours and careful weight distribution make the phone comfortable for two‑handed use. With IP68 water‑ and dust‑resistance, S21 Ultra models can handle rain, splashes and brief immersion in fresh water up to 1.5 metres for 30 minutes under lab conditions, adding extra confidence for daily use.
5G performance, big RAM and 5,000 mAh battery
Inside, Galaxy S21 Ultra phones use either Samsung’s Exynos 2100 or Qualcomm’s Snapdragon 888 5G chipset, depending on market, both built on a 5 nm process for high performance and improved power efficiency. The series offers 12 GB or 16 GB of LPDDR5 RAM and UFS 3.1 storage options of 128 GB, 256 GB or 512 GB, without microSD expansion, so selecting the right capacity is important at purchase time. A 5,000 mAh battery powers the S21 Ultra line, designed for a full day or more of intensive use, and supports 25 W fast wired charging (USB Power Delivery with PPS), 15 W fast wireless charging and reverse wireless charging (Wireless PowerShare) to top up accessories such as earbuds, smartwatches or another phone. Every S21 Ultra model supports 5G networks, Wi‑Fi 6E, Bluetooth 5.1/5.2, NFC and USB‑C 3.2, delivering fast, stable connectivity for data, accessories and casting.
Quad‑camera system for epic reach
The Galaxy S21 Ultra Series is defined by its advanced quad‑camera system: a 108 MP wide‑angle main camera with optical image stabilisation and laser autofocus, a 12 MP ultra‑wide camera, a 10 MP 3× telephoto camera and a 10 MP periscope telephoto camera with 10× optical zoom. This setup covers everything from detailed low‑light photos and ultra‑wide cityscapes to sharp long‑range shots, with Samsung’s Space Zoom pushing up to 100× zoom thanks to improved stabilisation and Zoom Lock. The S21 Ultra records 8K video at 24 or 30 fps and 4K video at up to 60 fps on both rear and 40 MP front camera, while features like Night Mode, Super Steady, Director’s View and 8K Video Snap give you flexible tools for content creation. A 40 MP selfie camera in the punch‑hole cut‑out provides detailed selfies and high‑quality 4K video for social media and video calls.
Why the Galaxy S21 Ultra Series is attractive refurbished
As refurbished devices, Galaxy S21 Ultra phones deliver QHD+ 120 Hz displays, 5 nm 5G chipsets, up to 16 GB of RAM, versatile quad‑camera systems with 108 MP main sensors and 10× optical zoom and 5,000 mAh batteries at much lower prices than new ultra‑flagships in 2026. Professionally refurbished units from Remobile are fully data‑wiped, cleaned and tested: displays, cameras, speakers, microphones, ports, connectivity and battery health are checked, and components that do not meet our standards are repaired or replaced. This makes the S21 Ultra Series an excellent choice for enthusiasts and power users who want Samsung’s top‑tier S21 experience with warranty and a 60‑day return period while helping to reduce electronic waste.
FAQ's
Is the Samsung Galaxy S21 Ultra 5G still good in 2026?
Yes. The Galaxy S21 Ultra 5G still offers a 6.8‑inch QHD+ 120 Hz Dynamic AMOLED 2X display, powerful Exynos 2100 or Snapdragon 888 performance and a highly capable quad‑camera system with 108 MP main sensor and dual telephoto lenses. For heavy everyday use, including gaming, photography and multitasking, it continues to feel like a true ultra‑flagship, especially at refurbished prices in 2026.
What display does the Galaxy S21 Ultra 5G have?
The S21 Ultra has a 6.8‑inch Edge Dynamic AMOLED 2X Infinity‑O display with QHD+ resolution of 3200 × 1440 pixels, around 515 ppi, and an adaptive 10–120 Hz refresh rate. It is HDR10+ certified and can reach high peak brightness, so content looks extremely sharp, smooth and vivid both indoors and outdoors.
Which processor and memory options do S21 Ultra models use?
Depending on the region, Galaxy S21 Ultra models are powered by either the Exynos 2100 or the Snapdragon 888 5G chipset, both manufactured on a 5 nm process. They are typically paired with 12 GB or 16 GB of LPDDR5 RAM, providing enough headroom for demanding apps, games and multitasking in 2026.
How much storage does the Galaxy S21 Ultra 5G offer?
S21 Ultra variants usually come with 128 GB, 256 GB or 512 GB of fast UFS 3.1 internal storage, but there is no microSD card slot. Because storage is fixed, you should choose the capacity that matches your needs for apps, photos and videos when you buy.
What is the battery life like on a refurbished S21 Ultra?
The Galaxy S21 Ultra 5G uses a 5,000 mAh battery designed to last a full day or more of intensive mixed use. It supports 25 W fast wired charging, 15 W fast wireless charging and reverse wireless charging via Wireless PowerShare; during refurbishment, battery health is tested and batteries that do not meet standards are replaced to maintain reliable runtime.
Which cameras are on the Galaxy S21 Ultra 5G?
On the back, S21 Ultra models feature a quad‑camera system with a 108 MP wide main camera, a 12 MP ultra‑wide camera, a 10 MP 3× telephoto camera and a 10 MP periscope telephoto camera with 10× optical zoom. On the front, there is a 40 MP selfie camera in the punch‑hole, capable of detailed selfies and 4K video.
How good is zoom and video recording on the S21 Ultra?
The dual telephoto arrangement gives true 3× and 10× optical zoom, while Samsung’s Space Zoom extends up to 100× with improved stabilisation and Zoom Lock to keep distant subjects in frame. The S21 Ultra records video up to 8K at 24 or 30 fps and 4K at up to 60 fps on both the rear cameras and the 40 MP front camera, with Night Mode, Super Steady and Director’s View enhancing low‑light and creative footage.
Does the Galaxy S21 Ultra 5G support wireless charging and Wireless PowerShare?
Yes. Galaxy S21 Ultra devices support 15 W fast wireless charging on compatible Qi chargers and 4.5 W reverse wireless charging via Wireless PowerShare, allowing you to wirelessly charge accessories or another phone on the back of the device.
Is the Samsung Galaxy S21 Ultra 5G water‑resistant?
The S21 Ultra Series is IP68‑rated for water and dust resistance, meaning it can withstand immersion in up to 1.5 metres of fresh water for up to 30 minutes under laboratory conditions. It is well protected against rain and splashes, but not intended for long swimming sessions or salt‑water use.
Does the Galaxy S21 Ultra 5G have a headphone jack or microSD slot?
No. Like the rest of the S21 line, the S21 Ultra does not include a 3.5 mm headphone jack or a microSD card slot. Audio is provided via USB‑C or Bluetooth, and storage is limited to the built‑in 128 GB, 256 GB or 512 GB capacity, depending on the variant.
What is checked on a refurbished Galaxy S21 Ultra 5G from Remobile?
Each refurbished S21 Ultra from Remobile goes through a multi‑point inspection: screen, touch, cameras, speakers, microphones, ports, buttons, sensors, connectivity and battery health are all tested. The device is data‑wiped, cleaned and cosmetically graded, and any components that do not meet our standards are repaired or replaced before sale.
Why choose a refurbished Galaxy S21 Ultra 5G from Remobile?
Buying a refurbished Galaxy S21 Ultra 5G from Remobile gives you ultra‑flagship display, performance and camera hardware at a significantly lower price, backed by professional testing, minimum battery‑health criteria, a 2‑Year Remobile Warranty and a 60‑day return period. At the same time, you help reduce electronic waste by extending the life of a high‑quality device.