Assuming that you do carry one on each ride.
I carry my phone in an inside pocket, zipped-up, in my armored riding jackets.
Yes - some say that is asking it to be driven into your heart during a big crash....
But, I want it to be some place I can get to in order to call for help if I'm nearly incapacitated some dark night on a lonely county road.
I always insure that the pocket is zipped closed. After a "big off" I do not want to have to go looking for it in the shrubbery.
I am also not tempted to place it in the scooter, and wonder about those people who attach it on their scooter for various reasons.
I figure that the scooter and I may become separated in a crash, so I want it on my person. (I recall the story from one rider here, who lost his leg, having to drag himself back to his scooter to get to his phone one night)
Stig