"Handheld" refers to a small device that can be held and operated with one hand. It is designed to be portable and convenient for use while on the go. Full definition
So far 44 states have passed legislation restricting the use of handheld devices by drivers in one way or another. (myimprov.com)
Due to the fact I was almost exclusively playing it on handheld mode in short bursts, lack of difficulty didn't ruin the experience. (waytoomany.games)
The game in handheld mode targets a locked 30 FPS frame rate and sadly it does not always manage that. (cubed3.com)