Well, OP sure used smartphone but became worried. There is reason of age. I grew up not only without internet but without mobile phones. I can live without smartphones. But of course now I don`t want to live without internet and mobile telephony. My favourite toy/fetish from youth days is computer and I stay with it. To me smatphones are not at the same level as PCs. They are mobile sure, but screen size, input methods are not for me. PS And about productivity. For example my work as a programmer has nothing to do with mails and talking with co-workers (at least on regular basis). Even if I will see a mail on the road to work I can`t do anything about it because my tools are developer ones, and I can`t use them on smartphone.