It can "ping" your phone, causing it to emit a loud noise.
I have used this on more than one occasion, because my phone is remarkably perambulant, for a hearty slab of glass and metal sans limbs or other appendages germane to motion.
I have used this on more than one occasion, because my phone is remarkably perambulant, for a hearty slab of glass and metal sans limbs or other appendages germane to motion.