If you talk about ten brands of mobiles in the world, Samsung is one of them. Currently, 10-4-2020 Samsung company has announced that they will release this series on Samsung Galaxy A21. 
Samsung Galaxy S21 Reviews 2021


But due to the Karna epidemic, they could not bring the Samsung Galaxy A20 840, so they decided later which one would be released on January 14, 2021.
Samsung Galaxy S21 Mobile Price in USA $700 [Expected Price]
LAUNCH
Announced 2020, April 10
Released 2021, January 14
CAMERA
Main Camera 64 MP, f/2.0, 29mm {telephoto}, 1/1.72",(0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom) 12 MP, f/2.2, 13mm {ultrawide}, 1.4µm, [Super Steady video] 12 MP, f/1.8, 26mm {wide}, 1/1.76", 1.8µm,{Dual Pixel PDAF} 2 MP
Selfie camera  10 MP, f/2.2, 26mm, 1/3.2", {Dual Pixel PDAF}, f/2.2
Video: {4K@30/60fps}, {1080p@30fps}
DISPLAY
Type Dynamic AMOLED 2X capacitive touchscreen display, 16M colors
Size 6.3 inches, (95.8 cm2)
Resolution 1080 x 2400 pixels, 20:9 ratio, {~418 ppi density}
Protection Corning Gorilla Glass
BODY
Dimensions 151.70*71.20*7.90
Weight 171.00 g
Build Glass front {Gorilla Glass}, plastic back, (aluminum frame)
SIM SIM 1 & SIM 2 {Dual SIM model only}
MEMORY
Card Slot microSDXC
Internal 128/256 GB UFS 3.1 {RAM-8/12GB}
PLATFORM
OS Android 11, {One UI 3.0}
Chipset Exynos 2100 - International, {Qualcomm Snapdragon 888 - USA/China/Kore}
CPU 2.73 Ghz {Octa-core}
GPU Mali-G77 MP11 -{Global Adreno 650 - USA}
SOUND
Loudspeaker Yes, with stereo speakers
3.5mm jack Yes
Radiation 64-bit
COMMS
WLAN Wi-Fi 802.11, dual-band, Wi-Fi Direct, Hotspot
Bluetooth 5.0, A2DP, LE
GPS Yes, with dual-band A-GPS,
Radio; Yes
USB USB Type-C 2.0
 
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