Htc One A9 has display Size 5.0", operating system Android 6.0, up to 7.0; Sense UI. The device has ram 3 GB too, card support is microSD, up to 256 GB (dedicated slot), it has 16 GB, 2 GB RAM32 GB, 3 GB RAM hard disk. Back camera 13 MP is awesome, front camera 4 MP is also not bad. One A9 has power storage, . Device status is Available