Reduces dropped calls and fading signals.</br>May Significantly improve signal strength.</br>Enhances sound quality.</br>Can be used with any cell phone.</br></br>Product Description</br></br>This is a bundle pack of 10 Antenna Boosters. These high signal strength boosters will help to receive calls and help prevent calls from being dropped. *PLEASE READ ALL INSTRUCTIONS ON BACK OF THE ITEM PRIOR TO INSTALLATION. After installation: You should notice at least ONE bar more ethan before?? keep in mind that in a near zero signal strength area (less than a continuous single antenna strength bar)?? results will be minimal. In areas where cell signals are non-existent the booster will have no effect (but neither would a 10 foot antenna).</br>