I have been using my Palm IIIxe with the Kodak PalmPix add-on camera
module rather frequently. Quality of images is low, of course. It can
do only 640x480, fixed focus only and color range is very limited. Even
my HP digital compact camera from 2003 is much better.
I never liked to use a phone to take pictures. Also cameras in most
phones which I had were of low quality (a Nokia E52, a bq Aquaris E4.5,
an iPhone 3G -the HP 750 camera beats them all).
The PalmPix may be even worse tahn any of the mentioned phones but
using it is fun: the only way to point the camera is use of Palm's
back-and-white screen. It is not easy to identify what is on the
screen, by the way. So it is always a great surprise what is actually
on the picture. And sometimes the pictures are usable. I like to take
pictures this way...