Posted Facilities; Blasting Areas - LG Nexus 4 Quick Start Manual

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

turn your phone oFF in any facility where posted notices so
require.
aircraft
Federal regulations prohibit using your phone while in the air. turn
your phone oFF before boarding an aircraft.

Blasting areas

to avoid interfering with blasting operations, turn your phone oFF
when in a 'blasting areas or in areas posted: 'turn off two-way
radio'. obey all signs and instructions.
Nexus 4 quick start guide