LG Nexus 4 Quick Start Manual page 35

• When you use the phone in public places, set the ring tone to
vibration so as not to disturb others.
• do not turn your phone on or off when putting it near your ear.
• Your phone is an electronic device that generates heat during
normal operation. extremely prolonged, direct skin contact in
the absence of adequate ventilation may result in discomfort
or minor burns. therefore, use care when handling your phone
during or immediately after operation.
Caution: avoid potential hearing loss.
Prolonged exposure to loud sounds (including music) is the most
common cause of preventable hearing loss. Some scientific
research suggests that using portable audio devices, such as
portable music players and cellular telephones, at high volume
settings for long durations may lead to permanent noise-induced
hearing loss. this includes the use of headphones (including
headsets, earbuds and Bluetooth® or other wireless devices).
exposure to very loud sound has also been associated in some
studies with tinnitus (a ringing in the ear), hypersensitivity to
sound and distorted hearing. individual susceptibility to noise-
induced hearing loss and other potential hearing problems
varies. the amount of sound produced by a portable audio device
varies depending on the nature of the sound, the device, the
device settings and the headphones. You should follow some
commonsense recommendations when using any portable audio
device:
Nexus 4 quick start guide