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Samsung GALAXY S21 Detailed Specifications

Build OS Android 11 OS  
UI One UI 3.1  
Dimensions 151.7 x 71.2 x 7.9 mm  
Weight 171 g  
SIM Dual Sim, Dual Standby, eSIM (Nano-SIM)  
Colors Phantom Gray, Phantom White, Phantom Violet, Phantom Pink  
Frequency 2G Band SIM1: GSM 850 / 900 / 1800 / 1900
SIM2: GSM 850 / 900 / 1800 / 1900  
3G Band HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100  
4G Band LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 32(1500), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100)  
5G Band 5G SA/NSA  
Processor CPU Octa-core (1 x 2.9 GHz Cortex-X1 + 3 x 2.80 GHz Cortex-A78 + 4 x 2.2 GHz Cortex-A55)  
Chipset Exynos 2100 (5 nm)  
GPU Mali-G78 MP14  
Display Technology Dynamic AMOLED 2X Capacitive Touchscreen, 16M Colors, Multitouch  
Size 6.2 Inches  
Resolution 1080 x 2400 Pixels (~424 PPI)  
Protection Corning Gorilla Glass Victus  
Extra Features Eye Comfort Shield, Always-on display, 120Hz, HDR10+, 1300 nits (peak)  
Memory Built-in 128/256GB Built-in, 8GB RAM, UFS 3.1  
Card No  
Camera Main Triple Camera: 12 MP, f/1.8, 26mm (wide), 1/1.76", Dual Pixel PDAF, OIS + 64 MP, f/2.0, 28mm (telephoto), 1/1.76", PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom + 12 MP, f/2.2, 13mm, (ultrawide), 1/2.55", Super Steady video, LED Flash  
Features Geo-tagging, touch focus, face/smile detection, Auto HDR, panorama, Video (8K@30fps, 4K@30/60fps, 1080p@30/60/120fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS)  
Front 10 MP, f/2.2, 26mm (wide), 1/3.24  
Connectivity WLAN Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot  
Bluetooth v5.0 with A2DP, LE  
GPS Yes + A-GPS support & Glonass, BDS, GALILEO  
USB USB Type-C 3.2, USB On-The-Go  
NFC Yes  
Data GPRS, Edge, 3G (HSPA 42.2/5.76 Mbps), 4G LTE-A (CA), 5G capable  
Features Sensors Accelerometer, Barometer, Compass, Fingerprint (under display, ultrasonic), Gyro, Proximity, SpO2  
Audio 32-bit/384kHz audio, MP4/DivX/XviD/WMV/H.265 player, MP3/WAV/WMA/eAAC+/FLAC player, Speaker Phone  
Browser HTML5  
Messaging SMS(threaded view), MMS, Email, Push Mail, IM  
Games Built-in + Downloadable  
Torch Yes  
Extra Glass front + Gorilla Glass Victus), Plastic back, Aluminum frame, Stylus support, Tuned by AKG, Active noise cancellation with dedicated mic, ANT+, Bixby natural language commands and dictation, Samsung DeX, Samsung Wireless DeX (desktop experience support), Samsung Pay (Visa, MasterCard certified), IP68 dust/water resistant (up to 1.5m for 30 mins), Document viewer, Photo/video editor  
Battery Capacity (Li-Po Non removable), 4000 mAh  
- Fast charging 25W, USB Power Delivery 3.0, Fast Qi/PMA wireless charging 15W, Reverse wireless charging 4.5W  

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Samsung firmware SM-G991B / GALAXY S21 SM-G991B

Device Model CSC Version Bit OS File Size Updated

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