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Smartphones sales surge, along with antisocial behavior

Nicolas Asfouri / AFP - Getty Images

A couple type on their smartphones at a shopping mall in Bangkok, March 21. People can be found glued to their smartphones at airports, on trains, in restaurants and even while walking on the street, creating a disconnection from their immediate surroundings. Smartphone sales are expected to continue to surge in 2013 with some 918 million units to be bought worldwide.

Nicolas Asfouri / AFP - Getty Images

Women look at their smartphones while walking together outside a shopping mall in Bangkok, March 19.

Nicolas Asfouri / AFP - Getty Images

Friends looking at their smartphones at a coffee shop in a shopping mall in Bangkok, March 19.

Nicolas Asfouri / AFP - Getty Images

People using their smartphones and tablets in a shopping mall in Bangkok, March 19.

Nicolas Asfouri / AFP - Getty Images

A man using a tablet and a woman using a smartphone as another young woman passes by talking on a smartphone at a shopping mall in Bangkok, March 21.

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Editor's note: Pictures were taken March 19-21 and made available to NBC News on March 31.