Samsung Galaxy S5 Duos has display Size 5.1 Inches, operating system Android 4.4.2; TouchWiz UI. The device has ram 2 GB too, card support is microSD, up to 256 GB (dedicated slot), it has 16 GB hard disk. Back camera 16 MP is awesome, front camera 2 MP is also not bad. Galaxy S5 Duos has power storage, Up to 21 h (3G). Device status is Available