Samsung Galaxy S4 has display Size 5.0 Inches, operating system Android 4.2.2, up to 5.0.1; TouchWiz UI. The device has ram 2 GB too, card support is microSD, up to 64 GB (dedicated slot), it has 16 GB hard disk. Back camera is awesome, front camera 2 MP is also not bad. Galaxy S4 has power storage, Up to 11 h (3G). Device status is Available