According to The Economic Times from India:
Today PDA seems to be on its last legs, overtaken by smartphones and UMPCs. Even Palm (a brand synonymous with PDAs) seems to have given up on it and is instead focusing on its smartphone range and on ‘smartphone companions’ !
Well, I remember Bill Gates saying that UMPCs and Smart Phones are converging into one point. And I will add that PDAs are like Dinosaurs on the edge of extinction.