Model Galaxy S21 Ultra | Built-in Memory 256 GB | RAM 12GB | Silver | 3G | LTE | 5G | OS Android 11.0 | Screen 6.8" | 3200 x 1440 | Dynamic AMOLED | CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) | Dual SI