If you use this cell phone jammer.You won't get any phone calls and your phone won't be able to be tracked. If you put your phone in the outer pocket, you'll be protected on one side from wireless radiation, however the other side is not protected so you'll be able to receive phone calls. When carrying my phone I put it in the outer pocket with the protected side against my body. This keeps my body from receiving any radiation and still allows for incoming phone calls. Very useful, versatile product. Can be used to protect car keys as well.