TD91W Android Version: android , wifi , bluetooth - System: Android 9.0 OS - Support AC3 use vlc player or MX player - Support App play store, APK install - Contact with smart phone: Yes,Support WiFi wireless contact with IOS and Android Phone - CPU: MSD6A358 Cortex-A35 - GPU: Mali-400 MP - Memory: 1G RAM + 8G ROM - WIFI: 2.4G 5G WFi - Play store: Download and install APP - Bluetooth-Compatible - Zoom 50%-100% - 6D Keystone: Support 4 point Corner electric keystone correction for side projection, Left and right 60 Degree,Up and down 60 Degree and Auto Vertical Keystone +/-60 Degree