Samsung Galaxy S20
Android 11, One UI 3
Android 12, One UI 4
Android 13, One UI 5
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, 120˚ ultrawide, 1/2.55" 1.4µm, Super Steady video
Wireless Qi/PMA 15W
Reverse Wireless 4.5W
Yes, Samsung Galaxy S20 offers IP68 rating, which means it can survive up to 1.5 meter (4.92 feet) for 30 minutes underwater and can endure dust and other small particles.
Samsung announced 3 major Android updates. So it will receive Android 11, Android 12, and last update will be Android 13.
Samsung announced 4 years of security updates for Samsung Galaxy S20, so it will receive patches approximately until 2024.
Yes, Samsung Galaxy S20 offers WiFi 6.