Which is less expensive, an e-reader or a tablet?, Is it easier to read an e-book or a regular book outside?, Which is more useful, a cell phone or a tablet?, Is it less difficult to write an email on a laptop or a smartphone?, Which is nicer for personal messages, email or a social network?, Is it worse to lose your laptop or your phone?, Is it better to hold your cell phone or use an earpiece when you call someone?, Why are phone calls becoming less popular than text messages?,

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