Wilson Electronics - Sleek 4G-A - AT&T 4G Cell Phone Signal Booster for Single User (Discontinued by Manufacturer) Significantly improve your cell phone reception and data rates on all 2G & 3G networks, as well as AT&T's 4G LTE Has built in cell phone charging capabilities (phone specific charging cable is not included), and an optional home/office accessories kit is available. Simplifies hands free operation when used with a headset or Bluetooth device Plug & Play Kit-easy installation and everything your need is in the box Comes with a 30-day money-back guarantee and a one-year manufacturer's warranty and U.S. based tech support