By the mid-2000s it was a fun mix: Palm in the hands, which dials the number on the phone strapped to your belt, with sound going to a headset. So the following

By the mid-2000s it was a fun mix: Palm in the hands, which dials the number on the phone strapped to your belt, with sound going to a headset. So the following merger was quite natural. The interface on Palm or WinCE also had cues of iPhone. The main thing to divine, aside from the finger-pointing, was that people didn't really like to aim at 3mm*3mm targets.