For safety :
I always carrying my cell phone in the breast pocket of my armored riding jackets. If rain is expected I first place it in a zip bag, then into pocket.
My thinking is that I want it with me, so I can make the call, if ever I go down.
We remember that Forbes had a bad accident and had to drag his injured body back to his scooter to get to his cell phone. I never want to have to do that.
I do not expect to find myself very near my scooter after an "off", and my LIKE requires the use of the ignition key to open any of the compartments where a cell phone might be stored.
I do not want to be finding and fumbling with a key and key hole after an off.
A cell phone in a breast pocket is also handy for photos - but mainly it is my nearby link to emergency services.
Some folks use RAM mounts for their cells....how likely is it that your phone would still be there after a bad accident?
What do others do, and why?
Stig