Samsung GT I8000 User Manual page 151

Avoid interference with pacemakers
Maintain a minimum of 15 cm (6 inches) between mobile devices and
pacemakers to avoid potential interference, as recommended by
manufacturers and the independent research group, Wireless
Technology Research. If you have any reason to suspect that your
device is interfering with a pacemaker or other medical device, turn off
the device immediately and contact the manufacturer of the
pacemaker or medical device for guidance.
Turn off the device in potentially explosive environments
Do not use your device at refuelling points (service stations) or near
fuels or chemicals. Turn off your device whenever directed by warning
signs or instructions. Your device could cause explosions or fire in and
around fuel or chemical storage and transfer areas or blasting areas.
Do not store or carry flammable liquids, gases, or explosive materials
in the same compartment as the device, its parts, or accessories.
Reduce the risk of repetitive motion injuries
While using your device, hold the device with a relaxed grip, press the
keys lightly, use special features that reduce the number of keys you
have to press (such as templates and predictive text), and take
frequent breaks.
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