Galaxy S21 Ultra 5G - 128GB, Phantom Silver
About this phone
The Samsung Galaxy S21 Ultra 5G in Phantom Silver delivers a premium flagship smartphone experience with a stunning 6.8-inch Quad HD+ Dynamic AMOLED 2X display, powerful Exynos 2100 octa-core processor and an advanced 108MP quad-camera system. With 128GB internal storage and 12GB RAM, it offers excellent performance for everyday multitasking, photography, video recording, gaming and entertainment.
Featuring a smooth 120Hz adaptive refresh rate, professional photography capabilities with 10x optical zoom, a large 5000mAh battery and fast 5G connectivity, the Galaxy S21 Ultra remains a capable premium smartphone. Its elegant Phantom Silver finish, Gorilla Glass Victus protection, S Pen compatibility and advanced connectivity make it a versatile choice for work and everyday use. This Samsung smartphone is supplied in Very Good condition.
Key Features
Large 6.8-inch Dynamic AMOLED 2X display
Quad HD+ resolution (3200 × 1440 pixels)
Adaptive refresh rate up to 120Hz
Up to 1500 nits peak display brightness
Samsung Exynos 2100 octa-core processor
12GB RAM for smooth multitasking
128GB internal storage
Premium Phantom Silver finish
108MP main wide-angle camera
12MP ultra-wide camera
10MP telephoto camera with 3x optical zoom
10MP periscope telephoto camera with 10x optical zoom
Up to 100x Space Zoom
40MP front-facing selfie camera
8K video recording at 24fps
4K video recording at up to 60fps
Advanced Night Mode photography
Compatible with Samsung S Pen (sold separately)
Ultrasonic in-display fingerprint sensor
Facial recognition support
5G mobile network connectivity
Wi-Fi 6E and Bluetooth 5.2
NFC for compatible contactless payments
Dual SIM and eSIM support (network dependent)
5000mAh battery capacity when new
Up to 25W wired fast charging support
Wireless charging and Wireless PowerShare
USB-C charging and connectivity
Stereo speakers
Corning Gorilla Glass Victus protection
IP68 manufacturer-rated water and dust resistance when new
Android operating system with Samsung One UI
Model: SM-G998B
Manufacturer Part Number: SM-G998BZSDEUA
Please note: S Pen is not included. As this is a pre-owned device, original water resistance cannot be guaranteed. Battery capacity refers to the original manufacturer specification, and actual battery performance may vary with age and usage. Samsung's routine security update support for this model ended in 2026.
Condition Guide
Very Good Condition – Fully working with light signs of previous use, such as minor scratches or small cosmetic marks. The Samsung Galaxy S21 Ultra has been professionally tested, thoroughly cleaned and data-wiped, and is ready for everyday use with a 12-month warranty included.
What’s in the Box
✓ USB-C Charging Cable
✓ 12-Month Warranty Included
A premium Samsung Galaxy smartphone combining a stunning 6.8-inch AMOLED display, powerful Exynos performance, a versatile 108MP quad-camera system and elegant Phantom Silver design for photography, productivity and everyday entertainment.
Key details
- BrandSamsung
- ModelGalaxy S21 Ultra 5G
- Storage128GB
- ColourSilver
- ConditionVery Good
- Release year2021
- Battery health80% battery health, or better
- SKU88907
12-month warranty
Every product includes a 12-month Tech Market return-to-base warranty, starting on the day you order, alongside your statutory consumer rights. It covers technical defects; accidental, liquid and screen damage are not covered.
Read the warranty termsDelivery
Free UK delivery is available on every order, with faster tracked services at checkout. Dispatch times are shown on our delivery page.
Returns
Changed your mind? Return it free within 30 days of receiving your order, in addition to your statutory rights.
Returns policyChoose the condition. Keep the performance.
| Grade | How it looks |
|---|---|
| Pristine | Cosmetically like new. Any imperfections are very minor. |
| Very Good | May show slight signs of use, including minor scratches. No cracks to the screen or casing. |
| Good | Shows signs of use, including some scratches and scuffs. No cracks to the screen or casing. |
| Acceptable | Heavy signs of use, including scratches and scuffs. No cracks to the screen or casing. |
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Accessories
25+ point inspection
Every phone and tablet is tested by hand by our technicians before it’s listed. We check more than 25 points across security, display, connectivity, audio, controls, battery and cameras, then data-wipe it and grade how it looks.
- IMEI and blacklist check
- Network unlock status
- Activation lock and accounts removed
- Data wiped and factory reset
- Touch response across the whole screen
- Display, brightness and True Tone
- Dead pixels and colour
- Mobile signal, calls and SIM or eSIM
- Wi-Fi and Bluetooth
- GPS and NFC
- Loudspeakers
- Earpiece
- Microphones
- Power and volume buttons
- Mute switch or Action button
- Face ID or Touch ID, proximity and light sensors
- Battery health, minimum 80%
- Charging port and cable charging
- Wireless charging where supported
- Front and rear cameras
- Focus, zoom and flash
- Video recording
- Screen and casing inspected
- Graded Pristine to Acceptable
- Anything notable shown on the listing