You ain't sneaking a cell phone into jail. When you get processed in, they take ALL of your shit, then you strip ass naked in a room full of other new inmates. A dep (or CO in some other jails) shouts the order to all of the dick-swinging gentlemen in the room to about-face, bend over, spread 'em, and cough. Unless of course, you pay off a dep to smuggle one in for you. Then it's only a matter of time before it's found and confiscated during the next shakedown.