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Samsung Galaxy S21 Ultra 5G
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Phone Insight
Full Specifications September 3, 2026
Samsung · 2021

Samsung Galaxy S21 Ultra 5G

Samsung Galaxy S21 Ultra 5G Android smartphone. Announced Jan 2021. Features 6.8″ display, Exynos 2100 chipset, 5000 mAh battery, 512 GB storage, 16 GB RAM, Corning Gorilla Glass Victus.

Display 6.8"
Chipset Exynos 2100
RAM 8-16 GB
Storage 128GB/256GB/512GB storage, no card slot
Camera 108 MP
Battery 5000 mAh
Build 227g (Sub6), 229g (mmWave), 8.9mm thickness

Launch

Announced 2021, January 14
Status Available. Released 2021, January 29

Platform

OS Android 11, up to 4 major OS updates, One UI 7
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
GPU Mali-G78 MP14 - International Adreno 660 - USA/China

Display

Type Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
Size 6.8 inches, 112.1 cm 2 (~89.8% screen-to-body ratio)
Resolution 1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Protection Corning Gorilla Glass Victus

Memory

Card slot No
Internal 128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
memoryother UFS 3.1

Main Camera

Quad 108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Features Laser AF, LED flash, auto-HDR, panorama
Video 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS

Selfie camera

Single 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Features HDR
Video 4K@30/60fps, 1080p@30fps

Body

Dimensions 165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
Weight 227 g (Sub6), 229 g (mmWave) (8.01 oz)
Build Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
SIM · Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
bodyother IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus support

Battery

Type Li-Ion 5000 mAh
Charging 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless

Sound

Loudspeaker Yes, with stereo speakers
3.5mm jack No
optionalother High-bitrate audio support

Comms

WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth 5.2, A2DP, LE
Positioning GPS, GLONASS, BDS, GALILEO
NFC Yes
Radio FM radio (Snapdragon model only; market/operator dependent)
USB USB Type-C 3.2, OTG

Network

Technology GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1
5G bands 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1
Speed HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)

Features

Sensors Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
featuresother Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support

Our Tests

Performance AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)
Display 1023 nits max brightness (measured)
Camera Photo / Video
Loudspeaker -25.5 LUFS (Very good)
Battery (old) Endurance rating 114h

Misc

Colors Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy
Models SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
SAR 0.77 W/kg (head)     1.02 W/kg (body)
SAR EU 0.71 W/kg (head)     1.58 W/kg (body)
In depth

Full specifications

Announced 2021, January 14
Status Available. Released 2021, January 29
OS Android 11, up to 4 major OS updates, One UI 7
Chipset Exynos 2100 (5 nm) - International Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
GPU Mali-G78 MP14 - International Adreno 660 - USA/China
Type Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
Size 6.8 inches, 112.1 cm 2 (~89.8% screen-to-body ratio)
Resolution 1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Protection Corning Gorilla Glass Victus
Card slot No
Internal 128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
memoryother UFS 3.1
Quad 108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Features Laser AF, LED flash, auto-HDR, panorama
Video 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Single 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Features HDR
Video 4K@30/60fps, 1080p@30fps
Dimensions 165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
Weight 227 g (Sub6), 229 g (mmWave) (8.01 oz)
Build Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
SIM · Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
bodyother IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus support
Type Li-Ion 5000 mAh
Charging 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
Loudspeaker Yes, with stereo speakers
3.5mm jack No
optionalother High-bitrate audio support
WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth 5.2, A2DP, LE
Positioning GPS, GLONASS, BDS, GALILEO
NFC Yes
Radio FM radio (Snapdragon model only; market/operator dependent)
USB USB Type-C 3.2, OTG
Technology GSM / CDMA / HSPA / EVDO / LTE / 5G
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1
5G bands 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1
Speed HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
Sensors Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
featuresother Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support
Performance AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)
Display 1023 nits max brightness (measured)
Camera Photo / Video
Loudspeaker -25.5 LUFS (Very good)
Battery (old) Endurance rating 114h
Colors Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy
Models SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
SAR 0.77 W/kg (head)     1.02 W/kg (body)
SAR EU 0.71 W/kg (head)     1.58 W/kg (body)
Price $ 259.91 / € 257.96 / £ 214.99
PhoneInsight Benchmark
80.2/100
Premium

A specs-derived composite score, not a lab benchmark -- useful for ranking and comparison.

Processor 78.2
Display 89.3
Camera 89.2
Battery 76.4
9.0%Popularity rank
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