The Huge Monster Powerful Smartphone in current time !!!
Screen size: 6.8" inches
Screen Resolution: 1440x3200 pixels
Main Camera : 108MP
Selfie Camera: 40MP
Screen Quality: 4320p
RAM: 12/16GB RAM
Chipset: Exynos 2100
Battery: 5000mAh Li-Ion
SAMSUNG GALAXY S21 ULTRA 5G REVIEW
Versions
SM-G998B, SM-G998B/DS (International); SM-G998U (USA); SM-G998U1 (USA unlocked); SM-G998W (Canada); SM-G998N (Korea); SM-G9980 (China).
Network Technology
GSM / CDMA / HSPA / EVDO / LTE / 5GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) CDMA 800 / 1900 & TD-SCDMAHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DO 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-G998U12, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G
Launch Date
Announced: 2021, January 14 Status: Available. Released: 2021, January 29.

Body
165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in) 227g (Sub6), 229 g (mmWave) (8.01 oz). Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame.
Single SIM (Nano-SIM) or Dual SIM (2 Nano-SIMs + eSIM, dual stand-by)
IP68 dust/water resistant (up to 1.5m for 30 mins), Stylus support.
Display
Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak) 6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Corning Gorilla Glass Victus Always-on display
Platform
Android 11, One UI 3.1
Exynos 2100 (5 nm) - International
Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680) - USA/China
Mali-G78 MP14 - International
Adreno 660 - USA/China
Memory
128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
UFS 3.1
Main Camera
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, 72mm (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
LED flash, auto-HDR, panorama8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS
Selfie Camera
40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAFDual video call, Auto-HDR4K@30/60fps, 1080p@30fps

Sound
Yes, with stereo speakers
Communications
Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot5.2, A2DP, LEYes, with A-GPS, GLONASS, BDS, GALILEO
FM radio (Snapdragon model only; market/operator dependent)
USB Type-C 3.2, USB On-The-Go
Features
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer.
SMS(threaded view), MMS, Email, Push Email, IMHTML5
Samsung DeX, Samsung Wireless DeX (desktop experience support).
Bixby natural language commands and dictation.
Samsung Pay (Visa, MasterCard certified).
Ultra Wideband (UWB) support
Battery
Li-Ion 5000 mAh, non-removable
Fast charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
Colours
Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown.
Models
SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
Body Dimensions
0.77 W/kg (head), 1.02 W/kg (body)
0.71 W/kg (head), 1.58 W/kg (body)
Tests
AnTuTu: 657150 (v8)
GeekBench: 3518 (v5.1)
GFXBench: 33fps (ES 3.1 onscreen)
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