![background image](http://html.mh-extra.com/html/samsung/sgh-i728/sgh-i728_user-manual_1190798080.webp)
77
Vehicles
RF signals may affect improperly installed or
inadequately shielded electronic systems in motor
vehicles. Check with the manufacturer or its
representative regarding your vehicle. You should
also consult the manufacturer of any equipment that
has been added to your vehicle.
Posted Facilities
Switch your phone off in any facility where posted
notices require you to do so.
Potentially Explosive Environments
Switch your phone off when in any area with a
potentially explosive atmosphere and obey all signs
and instructions. Sparks in such areas could cause
an explosion or fire resulting in bodily injury or even
death.
Users are advised to switch the phone off while at a
refueling point (service station). Users are reminded
of the need to observe restrictions on the use of
radio equipment in fuel depots (fuel 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, vehicles using liquefied petroleum gas
(such as propane or butane), areas where the air
contains chemicals or particles, such as grain, dust
or metal powders, and any other area where you
would normally be advised to turn off your vehicle
engine.
Emergency Calls
This phone, like any wireless phone, operates using
radio signals, wireless and landline networks as well
as user programmed functions, which cannot
guarantee connection in all conditions. Therefore,
you should never rely solely on any wireless phone
for essential communications (medical emergencies,
for example).
Remember, to make or receive any calls the phone
must be switched on and in a service area with
adequate signal strength. Emergency calls may not
be possible on all wireless phone networks or when
certain network services and/or phone features are
in use. Check with local service providers.
To make an emergency call:
1. If the phone is not on, switch it on.
2. Key in the emergency number for your present
location (for example, 911 or other official
emergency number). Emergency numbers vary
by location.
3. Press [
].
If certain features are in use (call barring, for
example), you may first need to deactivate those
features before you can make an emergency call.
Consult this document and your local cellular service
provider.