Portable Tech stories

Remember those small portable TVs you used to carry to ballgames or the beach, the ones where if you moved an iota, the picture went from shaky to snow? Once analog TV broadcasting went away, so did these skittish portable TVs. And once digital television came in, we were supposed to get mobile digital television — MDTV — built into cellphones. So where are our cellphones that receive digital television signals? When? Find out after the jump