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14 Safety Precaution
Before using the phone, read safety precautions and inform your
children about using the phone correctly and safely. For details,
see "Warnings and Precautions".
Do not crash, throw, or puncture your mobile phone.
Avoid the falling, squeezing, and bending of your mobile
phone.
Do not use your mobile phone in a moist environment,
such as the bathroom. Prevent your mobile phone from
being soaked or washed in liquid.
Do not switch on your mobile phone when it is
prohibited to use phones or when the phone may cause
interference or danger.
Do not use your mobile phone while driving.
Follow any rules or regulations in hospitals and health
care facilities. Switch off your mobile phone near
medical apparatus.
Switch off your mobile phone in aircraft. The phone may
cause interference to control equipment of the aircraft.
Switch off your mobile phone near high-precision
electronic devices. The phone may affect the
performance of these devices.
Summary of Contents for U3900
Page 1: ...User Guide ...
