Dual microUSB (USB Type)
It means that the smartphone has the two types of the microUSB input port.
True Tone Flash (Camera Features)
A new technology developed by Apple. It depends on two LEDs the first one is White and the other one is Amber. This technology relies on a software process that measures the white color percentage to the Amber color in the photo to calibrate the photo and make it closer to reality.
Amazon Cloud Drive (Embedded Services)
An Amazon cloud storage service that offers 5GB of free storage. It enables the user to upload files (photos, videos, ... etc) and use this files on any other Amazon device.
Windows 8.1 RT (Operating System Version)
BlackBerry OS 10.2 (Operating System Version)