At least according to
this BargainPDA editorial, despite shrinking sales numbers the handheld market isn't dying yet.
Any smartphone worth the name is far more a handheld computer than it is a cellular phone. To say that smartphones will replace handhelds is like saying that two-door sedans will replace cars. Even if, tomorrow morning, every device shipped with a cellular radio, the handheld computing market would still exist. It might look a little different. But then again, it might not.
And it would be so easy: to "rescue" handhelds all we'd have to do is to abolish all artificial categorizations differentiating between handhelds and smartphones.