Hi,
I have been using a cell phone camera as my most often used since the advent of the Ericsson CommuniCam which attached to the bottom of the T68i phone. That was, what now?, 25 years ago.
I keep an otherwise defunct BlackBerry Z10 in my electronics lab for quick shots of failed circuit boards and such. I also have an old Kodak 760c on a copy stand with macro lenses for wide field close up views. There is a Kodak 520c on a Leica microscop for those 'right down inside' shots. But it is the cell phone camera which gets the most use.
Outside work, I have a Fuji GFX-100 medium format and a Nikon Df small format and a Samsung S25 cell phone. And it is the cell phone camera which gets the most use.
Stan
Amateur Photographer
Professional Electronics Development Engineer