Wiktionary
fiddles with
vb. (en-third-person singularfiddle with)
Usage examples of "fiddles with".
He fiddles with some dials and things on the outside of the phone booth, and pushes a button.
Erica fiddles with lights, positions other cameras, tests microphones.
He fiddles with the controls on a radio transmitter for a few moments, spreads the encrypted message out in front of himself, and takes a deep breath, as though preparing for a big solo.
He fiddles with a key in the already unlocked door, eventually sussing he doesn't need the key, and blunders on into the office.