Tip: Disconnect the charger from the wall outletwhen the charger is not in use. A charger that isconnected to the outlet consumes power evenwhen it is not connected to the device.USB chargingYou can use USB charging when a wall outlet is notavailable. With USB charging, you can also transfer datawhile charging the device.1. Connect a compatible USB cable between acompatible USB device and your device.Depending on a type of device that is used forcharging , it may take a while for charging to start.2. If the device is switched on, you can select from theUSB mode options on the display of the device.Antenna locationsYour device may have internal and external antennas.As with any radio transmitting device, avoid touchingthe antenna area unnecessarily while the antenna istransmitting or receiving. Contact with such anantenna affects the communication quality and maycause the device to operate at a higher power levelthan otherwise needed and may reduce the batterylife.1 — Bluetooth and wireless LAN antenna, and GPSreceiver2 — FM transmitter antenna3 — Cellular antennaNote that the Bluetooth, WLAN, GPS, and FMtransmitter antennas are located in the back cover ofyour device. If you change the back cover, check thatthe new cover includes these antennas, otherwisethese connections stop working.13 Get started