Huawei Mate S has display Size 5.5 Inches, operating system Android 5.1.1, planned upgrade to 6.0. The device has ram 3 GB too, card support is microSD, up to 256 GB (uses SIM 2 slot), it has 128 GB hard disk. Back camera 13 MP is awesome, front camera 8 MP is also not bad. Mate S has power storage, . Device status is Available