Htc One M 8 Dual Sim has display Size 5.0", operating system Android 4.4.2, up to 4.4.4; 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 4 MP is awesome, front camera 5 MP is also not bad. One M 8 Dual Sim has power storage, . Device status is Available