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Device 1

Device 2

Galaxy S21 Ultra Poco X8 Pro
LAUNCH DATE
Announced January 29, 2021 17 March 2026
Released 2021-01-29 17 March 2026
Status Available Available
NETWORK
2G Bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100; CDMA2000 1xEV-DO HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G LTE 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; 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G998B 1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 40, 41, 42, 48, 66, 71
5G 2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1; 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B 1, 2, 3, 5, 7, 8, 20, 26, 28, 38, 40, 41, 48, 66, 71, 77, 78 SA/NSA/Sub6
Speed LTE, 5G HSPA, LTE, 5G
Technology 5G/4G/LTE/GSM GSM / WCDMA / LTE / 5G
BODY
Build Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame Glass front, glass back, plastic frame
Dimensions 165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in) 157.5 x 75.2 x 8.4 mm (6.20 x 2.96 x 0.33 in)
IP Rating IP68 dust/water resistant (up to 1.5m for 30 min) IP68
SIM Nano-SIM + eSIM Nano-SIM + Nano-SIM + eSIM (max 2 at a time) Dual nano-SIM
Weight 227 g (Sub6), 229 g (mmWave) (8.01 oz) 201.47 g
DISPLAY
Brightness 1500 nits (peak) 800 nits typical; 2000 nits HBM; 3500 nits peak at 25% display area
Color — 12-bit, DCI-P3
Features — HDR10+, Dolby Vision, 3840Hz PWM dimming
Protection Corning Gorilla Glass Victus Gorilla Glass 7i
Refresh Rate 120Hz Up to 120Hz
Resolution 1440 x 3200 pixels, 20:9 ratio (~515 ppi density) 1268 x 2756 pixels, 19.5:9 ratio (~460 ppi density)
Screen-to-body ~89.8% ~90%
Size 6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio) 6.59 inches
Type Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak) AMOLED
PLATFORM
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 Octa-core, up to 3.4GHz
Chipset Exynos 2100 (5 nm) - International / Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China Dimensity 8500-Ultra (4nm)
GPU Mali-G78 MP14 - International Adreno 660 - USA/China Mali-G720 MC8
OS Android 11, up to 4 major Android upgrades, One UI 6.1 Xiaomi HyperOS 3
MEMORY
Card slot No No
Internal 128GB, 256GB, 512GB 256 GB / 512 GB
RAM 8GB RAM, 12GB RAM,16GB RAM, 8 GB / 12 GB LPDDR5X
Storage Type — UFS 4.1
Storage/RAM variants 128GB, 256GB, 512GB; 8GB RAM, 12GB RAM,16GB RAM, 256 GB / 512 GB; 8 GB / 12 GB LPDDR5X RAM
MAIN CAMERA
Features Laser AF, LED flash, auto-HDR, panorama LED flash, HDR, panorama
MAIN CAMERA 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 50 MP Sony IMX882 f/1.5 OIS + 8 MP ultrawide f/2.2
Video 8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS 4K at 30/60fps; 1080p at 30/60fps
SELFIE CAMERA
Features HDR HDR
Selfie camera 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF 20 MP
Video 4K@30/60fps, 1080p@30fps 1080p at 30/60fps
SOUND
3.5mm jack No No
Dolby Atmos — Yes
Loudspeaker Yes, with stereo speakers Stereo speakers
COMMUNICATION
Bluetooth 5.2, A2DP, LE 6.0
NFC Yes Yes; availability varies by market
Positioning GPS, GLONASS, BDS, GALILEO GPS, BeiDou, Galileo, GLONASS, QZSS, NavIC
Radio FM radio (Snapdragon model only; market/operator dependent) No
USB USB Type-C 3.2, OTG USB-C
WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct Wi-Fi 6, dual band
FEATURES
Sensors Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer Proximity, ambient light, accelerometer, compass, gyroscope, flicker sensor, IR blaster
BATTERY
Capacity 5000 mAh 6500 mAh (typical)
Charging Type 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless 100W wired; up to 27W reverse wired
Type Li-Ion 5000 mAh 6500 mAh, non-removable
ADDITIONAL INFORMATION
Colors Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy Black, Mint Green, White, Yellow
Compatibility — Singapore specification set
Launch Price (USD) $399.98 (reference only — see Price in Nigeria above for the actual retail price) —
Models SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980 Region-specific variants
Price in Nigeria ₦612,000 ₦650,000
SECURITY
Security Biometric security: Fingerprint (under display, ultrasonic). In-display fingerprint sensor; face unlock