other than those approved for use with this device, to the audio connector, pay special attention tovolume levels.Antenna locationsLearn where the antennas are located on your phone to get the best possible performance.Avoid touching the antenna area while the antenna is in use. Contact with antennas affects thecommunication quality and may reduce battery life due to higher power level during operation.The antenna areas are highlighted.© 2014 Microsoft Mobile. All rights reserved. 18