Samsung SGH-X640 Manual De Usuario

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Health and safety information
Potentially explosive environments
Switch off your phone 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 off the phone while at a 
refuelling 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 the areas 
below decks 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 like medical emergencies.
To make or receive 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. Switch on the phone.
2. Key in the emergency number for your present 
location. Emergency numbers vary by location.
3. Press [
].
Certain features like Call Barring may need to be 
deactivated before you can make an emergency call. 
Consult this document and your local cellular service 
provider.