Section 15: Health and Safety Information 163Other Important Safety InformationOther Important Safety Information• Only qualified personnel should service the phone or install the phone in a vehicle. Faultyinstallation or service may be dangerous and may invalidate any warranty applicable to thedevice.• Check regularly that all wireless phone equipment in your vehicle is mounted and operatingproperly.• Do not store or carry flammable liquids, gases or explosive materials in the same compartmentas the phone, its parts or accessories.• For vehicles equipped with an air bag, remember that an air bag inflates with great force. Donot place objects, including both installed or portable wireless equipment in the area over theair bag or in the air bag deployment area. If wireless equipment is improperly installed and theair bag inflates, serious injury could result.• Switch your phone off before boarding an aircraft. The use of wireless phone in aircraft is illegaland may be dangerous to the aircraft's operation.• Failure to observe these instructions may lead to the suspension or denial of telephone servicesto the offender, or legal action, or both.Product PerformanceGetting the Most Out of Your Signal ReceptionThe quality of each call you make or receive depends on the signal strength in your area.Your phone informs you of the current signal strength by displaying a number of bars nextto the signal strength icon. The more bars displayed, the stronger the signal.If you're inside a building, being near a window may give you better reception.Understanding the Power Save FeatureIf your phone is unable to find a signal after 15 minutes of searching, a Power Save featureis automatically activated. If your phone is active, it periodically rechecks serviceavailability or you can check it yourself by pressing any key.Anytime the Power Save feature is activated, a message displays on the screen. When asignal is found, your phone returns to standby mode.Understanding How Your Phone OperatesYour phone is basically a radio transmitter and receiver. When it's turned on, it receivesand transmits radio frequency (RF) signals. When you use your phone, the system handlingyour call controls the power level. This power can range from 0.006 watts to 0.2 watts indigital mode.