Who would've imagined way back then, that mobs today would include built in cameras, FM radios, temp/pressure sensors, detailed nav/gps maps, internet/email/tv capability, hundreds of useful apps, games to name just a few..
Whether we could do without them altogether is a difficult one to answer - we seemed to manage beforehand lol! with a brand new mobile phone starting from one yes one pound each! call tariffs may of course vary.. chances are they'll be around for a lot longer still.