Samsung Z4 runs Tizen 3.0The smartphone has a 5-inch HD displayIt has an 8MP rear camera with an LED flash and a 5MP front-facing cameraThe device is powered by a 2GHz octa-core processorand 1GB RAMIt has 8GB internal storage which can further be expanded via a microSD card up to 128GBConnectivity options include 4G, Wi-Fi 802.11 b/g/n, Bluetooth 4.1, GPS, and a microUSB 2.0 portThe device is powered by a Li-Ion 2, 050 mAh battery