Htc Desire 820 Dual Sim has display Size 5.5", operating system Android 4.4.2; Sense UI 6. The device has ram 2 GB too, card support is microSD, up to 256 GB (dedicated slot), it has 16 GB, 2 GB RAM hard disk. Back camera 13 MP is awesome, front camera 8 MP is also not bad. Desire 820 Dual Sim has power storage, . Device status is Available