(Also see: HTC One (M8) vs HTC One M8s)
The 4-UltraPixel duo camera setup has been replaced with a 13-megapixel duo camera. The front 5-megapixel camera is the same as the one the One (M8). Upfront, the device still has a 5-inch full-HD (1080x1920 pixels) display with Corning Gorilla Glass 3 protection.
The Qualcomm Snapdragon 801 processor of the HTC One (M8) has been replaced with a 64-bit 1.7GHz octa-core Qualcomm Snapdragon 615 octa-core processor coupled with 2GB of RAM. The 16GB inbuilt storage on the One M8s is expandable via microSD card (up to 128GB).
(Also see: HTC One M9 vs HTC One (M8) vs HTC One M8s)
The battery on the HTC One M8s has been bumped up to 2840mAh, which is up from 2600mAh on the One (M8). Connectivity options on the handset include 4G LTE, GPS/ A-GPS, Wi-Fi, Bluetooth 4.1, and NFC. The One M8s will be available in Glacial Silver, Gunmetal Gray, and Amber Gold colour options.