Don't forget that it also has a digital watch and calculator build in. Two things that where always added to 1970s premium tech products :)

A portable super computer, modem, video camera, telephone, address book, flashlight, compass, level, gps/navigator, tv, radio, alarm clock, credit card, ID, library, game console, translator, calendar, calculator, and more. Secured with your biometric information, charges fully within an hour, and runs for about a full day before needing a recharge.

But this one doesn't fold in half, so I'm throwing it out and buying a new one...

But it's obsolete, so they throw it away and buy a new one the next year.

This is it, when you look at sci-fi from that era you rarely see the analog of our current “phones”