Samsung Galaxy S21 Ultra 5G
Android 12, One UI 4.1
Android 13, One UI 5.1
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
USB Power Delivery 3.0
Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
Yes, Samsung Galaxy S21 Ultra 5G 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 12, Android 13, and last update will be Android 14.
Samsung announced 4 years of security updates for Samsung Galaxy S21 Ultra 5G, so it will receive patches approximately until 2025.
Yes, Samsung Galaxy S21 Ultra 5G offers WiFi 6E.