
SAN FRANCISCO, June 13, 2016 (Xinhua) -- An attendee takes a selfie during the Apple Inc.'s World Wide Developers Conference in San Francisco, California, the United States, June 13, 2016. (Xinhua)

SAN FRANCISCO, June 13, 2016 (Xinhua) -- An attendee takes a selfie during the Apple Inc.'s World Wide Developers Conference in San Francisco, California, the United States, June 13, 2016. (Xinhua)