66• Use a soft, clean, dry cloth to clean any lenses, such ascamera, proximity sensor, and light sensor lenses.• Use only the supplied or an approved replacement antenna.Unauthorized antennas, modifications, or attachments coulddamage the device and may violate regulations governingradio devices.• Use chargers indoors.• Always create a backup of data you want to keep, such ascontacts and calendar notes.• To reset the device from time to time for optimumperformance, power off the device and remove the battery.These suggestions apply equally to your device, battery, charger,or any enhancement. If any device is not working properly, take itto the nearest authorized service facility for service.Additional safety information■ Small childrenYour device and its enhancements may contain small parts.Keep them out of the reach of small children.