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to the operation of the aircraft, disrupt the wireless telephone network, and may be
illegal.
Potentially explosive environments
Switch off your device when in any area with a potentially explosive atmosphere, and
obey all signs and instructions. Potentially explosive atmospheres include areas
where you would normally be advised to turn off your vehicle engine. Sparks in such
areas could cause an explosion or fire resulting in bodily injury or even death. Switch
off the device at refuelling points such as near gas pumps at service stations. Observe
restrictions on the use of radio equipment in fuel depots, storage, and distribution
areas; chemical plants; or where blasting operations are in progress. Areas with a
potentially explosive atmosphere are often, but not always, clearly marked. They
include below deck on boats, chemical transfer or storage facilities and areas where
the air contains chemicals or particles such as grain, dust, or metal powders. You
should check with the manufacturers of vehicles using liquefied petroleum gas (such
as propane or butane) to determine if this device can be safely used in their vicinity.
Emergency calls
Important: This device operates using radio signals, wireless networks, landline
networks, and user-programmed functions. If your device supports voice calls over
the internet (internet calls), activate both the internet calls and the cellular phone.
The device will attempt to make emergency calls over both the cellular networks and
through your internet call provider if both are activated. Connections in all conditions
cannot be guaranteed. You should never rely solely on any wireless device for
essential communications like medical emergencies.
To make an emergency call:
1 If the device is not on, switch it on. Check for adequate signal strength.
Depending on your device, you may also need to complete the following:
• Insert a SIM card if your device uses one.
Product and safety information 77
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