This Cell Antenna Booster Sticker With Safe Guard Is For Cell Phones and PDA. Cell Antenna Booster Stickers help enhance your cellular phone signal and help reduce some static in your conversation with this easy to install internal antenna booster. Simply place the Cell Antennae Booster Stickers under your battery on inside of your phone behind the fixed antenna of the phone and you are done no tools are required. Plus you get the safe guard it helps protect from electromagnetic waves produced by cellular phones. Simply place the safe guard on the speaker of the cell phone and you are done. 1 per pack. This Is A Consumable Item All Sales Are Final.