
1) Hand-held 2) Palm Tungsten 3) Portable, like a smartphone
Found on
https://www.crosswordclues.com/clue/handheld

1) Pda
Found on
https://www.crosswordclues.com/clue/handheld

Small, self-contained game-oriented device, such as Nintendo's GBA.
Found on
http://classicdoom.com/glossary.htm

A small game machine, battery-powered, designed to be played while held in the, um, hands. Like Game Boy, PSP, or Tamagotchi.
Found on
http://www.sloperama.com/advice/lesson28.html

Shooting without a tripod, but with the camera held by the cameraperson
Found on
https://www.encyclo.co.uk/local/21112
No exact match found.