Smartphones; Mobile phones; Wearable smartphones; Wireless headsets for smartphones, mobile phones and portable media players; Headsets for smartphones, mobile phones and portable media players; Digital settop boxes; Cases for mobile phones; Flip covers for mobile phones; Application software for mobile phones, namely, software for enabling users to make video calls by using dual screens of mobile phones; Downloadable application software for dual screens, namely, software for controlling the operation of dual screens of mobile phones; Displays for mobile phones, namely, LED displays for mobile phones, OLED (Organic light emitting diode) displays for mobile phones, liquid crystal displays for mobile phones and video displays for mobile phones; Cameras for mobile phones; Portable computers; Battery chargers for mobile phones, smartphones and portable media players; Digital cameras; Batteries for mobile phones; Tablet computers; Audio component system composed of surround sound speakers, loudspeakers, tuners, sound mixers, equalizer, audio recorders and radio receivers; Apparatus for recording, transmission or reproduction of sound and images; Portable media players