100% brand new. * Fits ALL mobile phones: AUDIOVOX / ERICSSON / NEXTEL / NOKIA / MOTOROLA / SAMSUNG / QUALCOMM / KYOCERA / LG / PANASONIC / SANYO / SIEMENS etc... * You should notice atleast ONE "bar" more than before. Keep in mind that in a near zero signal strength area (less than continuous single antenna strength bar), results will be minimal. In areas where cell signals are non-existent, the booster will have no * Improves sound quality by eliminating noises. * Very easy to install. No tools needed. Just stick it to the back of the phone where the battery is placed into.