Model NameGalaxy S21 Ultra (5G)
Dimensions165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
Weight227 g (Sub6), 229 g (mmWave) (8.01 oz)
BuildGlass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
SIMSingle SIM (Nano-SIM and/or eSIM) or Dual SIM (Nano-SIM and/or eSIM, dual stand-by)
Stylus support
Stylus support
Display TypeDynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
Display Size6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
Resolution1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
ProtectionScratch-resistant glass, oleophobic coating
Always-on display
Always-on display
OSAndroid 11, One UI 3.1
ChipsetExynos 2100 (5 nm) – International
Qualcomm SM8350 Snapdragon 888 5G (5 nm) – USA/China
Qualcomm SM8350 Snapdragon 888 5G (5 nm) – USA/China
CPUOcta-core (1×2.9 GHz Cortex-X1 & 3×2.80 GHz Cortex-A78 & 4×2.2 GHz Cortex-A55) – International
Octa-core (1×2.84 GHz Kryo 680 & 3×2.42 GHz Kryo 680 & 4×1.80 GHz Kryo 680) – USA/China
Octa-core (1×2.84 GHz Kryo 680 & 3×2.42 GHz Kryo 680 & 4×1.80 GHz Kryo 680) – USA/China
GPUMali-G78 MP14 – International
Adreno 660 – USA/China
Adreno 660 – USA/China
Memory Card SlotNo
Internal128GB 12GB RAM, 256GB 12GB RAM, 512GB 16GB RAM
UFS 3.1
UFS 3.1
5G Variant128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
UFS 3.1
UFS 3.1
Main Camera (Quad)108 MP, f/1.8, 24mm (wide), 1/1.33″, 0.8µm, PDAF, Laser AF, OIS
10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24″, 1.22µm, dual pixel PDAF, OIS, 10x optical zoom
10 MP, f/2.4, 70mm (telephoto), 1/3.24″, 1.22µm, dual pixel PDAF, OIS, 3x optical zoom
12 MP, f/2.2, 13mm (ultrawide), 1/2.55″, 1.4µm, dual pixel PDAF, Super Steady video
10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24″, 1.22µm, dual pixel PDAF, OIS, 10x optical zoom
10 MP, f/2.4, 70mm (telephoto), 1/3.24″, 1.22µm, dual pixel PDAF, OIS, 3x optical zoom
12 MP, f/2.2, 13mm (ultrawide), 1/2.55″, 1.4µm, dual pixel PDAF, Super Steady video
FeaturesLED flash, auto-HDR, panorama
Video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
Selfie Camera (Single)40 MP, f/2.2, 26mm (wide), 1/2.8″, 0.7µm, PDAF
FeaturesDual video call, Auto-HDR
Video4K@30/60fps, 1080p@30fps
LoudspeakerYes, with stereo speakers
3.5mm JackNo
32-bit/384kHz audio
Tuned by AKG
32-bit/384kHz audio
Tuned by AKG
WLANWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot
Bluetooth5.2, A2DP, LE
GPSYes, with A-GPS, GLONASS, BDS, GALILEO
NFCYes
RadioFM radio (Snapdragon model only; market/operator dependent)
USBUSB Type-C 3.2, USB On-The-Go
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Bixby natural language commands and dictation
Samsung Pay (Visa, MasterCard certified)
Ultra Wideband (UWB) support
Samsung DeX, Samsung Wireless DeX (desktop experience support)
Bixby natural language commands and dictation
Samsung Pay (Visa, MasterCard certified)
Ultra Wideband (UWB) support
Battery TypeLi-Ion 5000 mAh, non-removable
ChargingFast charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
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