00699nam a2200289Ia 4500 170711s9999 xx 000 0 und d 9780306819605 303.48 C518 2011 Chen, Brian X. Always on / Brian X. Chen. USA : Da Capo, 2011 248 pages : illustrations ; 21cm. Includes index. iPhone (Smartphone) -- Technological innovations -- Telecommunication -- Social aspect. Social aspect. Social aspects. Title. 339538 339538