ANDROID
Minimum:
Android 8.1.0
RAM 3 GB, CPU Quad-core 1.4 GHz or equivalent (e.g., ARM Cortex-A53)
GPU Adreno 505 or equivalent, Screen resolution 250 PPI
 
Recommended: 
Android 10 or higher
RAM 4 GB, CPU Octa-core 1.8 GHz or higher (e.g., ARM Cortex-A73 and above)
GPU Adreno 506 or higher (or Mali-G72 and above), Screen resolution 300 PPI or higher
 
 
iOS
Minimum: 
iOS 13.0
RAM 2 GB, CPU Apple A9
GPU PowerVR GT7600 or equivalent, Screen resolution 326 PPI
 
Recommended: 
iOS 14 or higher
RAM 2 GB, CPU Apple A10 Fusion or higher
GPU Apple A11 Bionic or newer, Screen resolution 401 PPI or higher