120 Hz Dynamic AMOLED 2X displays
The Samsung Galaxy S21 Series consists of three models – Galaxy S21, Galaxy S21+ and Galaxy S21 Ultra – all built around Samsung’s 120 Hz Dynamic AMOLED 2X technology. The S21 has a 6.2‑inch FHD+ Infinity‑O display, the S21+ increases that to 6.7 inches and the S21 Ultra offers a 6.8‑inch panel with up to QHD+ resolution, giving you options from compact to large without losing smooth scrolling and strong brightness. All models support HDR10+ and high peak brightness, so streaming, gaming and everyday apps benefit from deep contrast, accurate colours and good visibility outdoors.
Refined design with IP68 protection
Every Galaxy S21‑series phone uses a metal frame with Gorilla Glass Victus on the front and a distinctive “Contour Cut” camera housing on the back that blends the camera module into the frame. This gives the series a modern, premium look while keeping the devices comfortable to hold. All three models are IP68‑certified for water and dust resistance, so they can withstand splashes, rain and brief immersion in fresh water up to 1.5 metres for 30 minutes under lab conditions. The S21 and S21+ focus on lighter, colourful “Phantom” finishes, while the S21 Ultra adds a more serious look and support for the S Pen on compatible variants for users who like precise input.
5G performance and battery options
Inside, all Galaxy S21‑series models are powered by either Samsung’s Exynos 2100 or Qualcomm’s Snapdragon 888 5G chipsets, depending on region. These 5 nm processors still deliver high flagship‑class performance in 2026, handling multitasking, demanding apps and modern games smoothly while supporting full 5G connectivity. The S21 and S21+ usually come with 8 GB of RAM and 128 GB or 256 GB of fast UFS 3.1 storage, while the S21 Ultra adds 12 GB or more RAM and storage up to 512 GB in many markets; none of the S21 phones support microSD expansion, so choosing the right capacity at purchase matters.
Battery sizes scale with the model: 4,000 mAh in the S21, 4,800 mAh in the S21+ and 5,000 mAh in the S21 Ultra, giving the larger phones especially strong endurance for heavy users. All support 25 W fast wired charging, 15 W fast wireless charging and Wireless PowerShare, which lets you charge accessories like earbuds or another phone on the back of your S21.
Flexible camera systems for every model
The Galaxy S21 and S21+ share the same triple‑camera setup on the rear: a 12 MP main wide camera with OIS, a 12 MP ultra‑wide camera and a 64 MP telephoto lens with 3x hybrid optical zoom and up to 30x “Space Zoom.” This combination covers everyday scenes, wide landscapes and closer shots of distant subjects, supported by Samsung’s software features like improved Night mode, Single Take and advanced video modes up to 8K recording.
The S21 Ultra goes further with a quad‑camera system: a 108 MP main sensor, 12 MP ultra‑wide camera and two separate 10 MP telephoto lenses – one with 3x optical zoom and another with 10x optical zoom – enabling detailed photos at longer distances and up to 100x “Space Zoom” in software. All models feature a 10 MP front camera (40 MP on the Ultra in some regions) in the punch‑hole display, capable of high‑quality selfies and 4K video for video calls and social media.
Why refurbished Galaxy S21 Series is a smart choice
As refurbished devices, the Galaxy S21, S21+ and S21 Ultra offer a modern flagship experience at a much lower cost than when they were new or compared with current‑generation Galaxy S models. You still get 120 Hz OLED displays, 5G connectivity, strong performance, advanced cameras, wireless charging and IP68 protection, but pay closer to mid‑range prices, especially for popular 128 GB and 256 GB variants in 2026. When professionally refurbished and tested by a specialist such as Remobile, each phone is fully data‑wiped, cleaned and subjected to a detailed technical inspection, with components like the battery and ports checked and replaced if required, so you receive a reliable device backed by 2‑Year Remobile Warranty and a 60‑day return period while also helping reduce electronic waste.
Is the Samsung Galaxy S21 5G still good in 2026?
Yes. The Galaxy S21 5G still offers a smooth 120 Hz Dynamic AMOLED 2X display, fast performance from the Exynos 2100 or Snapdragon 888 and a versatile triple‑camera system. For everyday tasks such as social media, browsing, video streaming, photography and gaming, it remains more than capable when bought refurbished at today’s lower prices.
What display does the Galaxy S21 5G use?
The Galaxy S21 5G has a 6.2‑inch FHD+ Infinity‑O Dynamic AMOLED 2X display with a resolution of 2400 x 1080 pixels and an adaptive 120 Hz refresh rate. It also supports HDR10+ and high peak brightness, so content looks sharp and vivid indoors and outdoors.
Which processor and storage options are available?
Depending on your region, the Galaxy S21 5G is powered by either the Samsung Exynos 2100 or the Qualcomm Snapdragon 888 5G chipset, combined with 8 GB of RAM. Most refurbished units offer 128 GB or 256 GB of fast UFS 3.1 storage; there is no microSD slot, so you should choose the size that fits your needs.
How is the battery life on a refurbished Galaxy S21 5G?
The Galaxy S21 5G has a 4,000 mAh battery designed to last a full day of mixed use. During refurbishment, the battery is tested and, if it does not meet our quality standards, it is replaced so you can still expect reliable all‑day performance with 25 W fast wired charging, 15 W fast wireless charging and Wireless PowerShare.
What camera system does the Galaxy S21 5G have?
On the back, the Galaxy S21 5G features a triple‑camera setup with a 12 MP wide main camera with OIS, a 12 MP ultra‑wide camera and a 64 MP telephoto camera offering 3x hybrid optical zoom and up to 30x Space Zoom. On the front, a 10 MP selfie camera in the punch‑hole supports high‑quality photos and up to 4K video for calls and social media.
Does the Galaxy S21 5G support wireless charging?
Yes. The Galaxy S21 5G supports fast wireless charging and Wireless PowerShare. You can charge the phone on a compatible wireless charger and also use the S21 itself to wirelessly top up accessories such as earbuds or another Qi‑compatible phone.
Is the Samsung Galaxy S21 5G water-resistant?
The Galaxy S21 5G is rated IP68 for water and dust resistance. Under lab conditions, it can withstand immersion in fresh water up to 1.5 metres for up to 30 minutes, but it is not intended for swimming or salt‑water use, so extended or deep immersion should be avoided.
Does the Galaxy S21 5G have a headphone jack or microSD slot?
No. The Galaxy S21 5G does not include a 3.5 mm headphone jack or a microSD card slot. Audio is handled via USB‑C or Bluetooth, and storage is fixed at 128 GB or 256 GB depending on the model.
What is checked on a refurbished Samsung Galaxy S21 5G?
Each refurbished Galaxy S21 5G from Remobile goes through a multi‑point inspection. Display, touch, cameras, speakers, microphones, ports, wireless connections, sensors and battery health are all tested. The software is reset, the device is cleaned and cosmetically graded, and components that do not meet our standards are repaired or replaced before sale.
Why choose a refurbished Galaxy S21 5G from Remobile?
Choosing a refurbished Galaxy S21 5G from Remobile gives you a modern 5G flagship at a lower price, with the reassurance of professional testing, minimum battery‑health standards, a 2‑Year Remobile Warranty and a 60‑day return policy. You also help reduce electronic waste by keeping a high‑quality device in use for longer.