Samsung Galaxy S21 Ultra 5G specs Display: 6.80" Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak), 1440x3200px resolution, 20:9 aspect ratio, 515ppi; Always-on display. Chipset (USA): Qualcomm SM8350 Snapdragon 888 (5 nm): Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680; Adreno 660. Memory: 128GB/256GB, 12GB RAM. OS/Software: Android 11, One UI 3.1. Battery: 5000mAh; Fast charging 25W, USB Power Delivery 3.0, Fast Qi/PMA wireless charging 15W, Reverse wireless charging 4.5W.