This Certified Refurbished product is tested & certified to work like-new. The product is backed by a 1 year warranty</br>Portable Cellular Signal Amplification</br>Can Easily Be Moved From Vehicle To Building & Back Again</br>Greatly Reduces Dropped Calls</br>Extends Signal Range & Increases 3g Data Throughput Rates</br></br>Product Description</br></br>Consumer Alert: Before use?? you must register this device with your wireless provider and have your provider's consent. Most wireless providers consent to the use of signal boosters. Although AT&T?? Sprint?? T-Mobile?? Verizon and 90 additional carriers have already g