Operating Environment; Preventing Hearing Damage - Huawei Mobile Phones User Manual

the aircraft and disrupt the wireless telephone network. It
may also be considered illegal.

Operating Environment

• Do not use or charge the device in dusty, damp or dirty
places or places with magnetic fields. Otherwise, it may
result in a malfunction of the circuit.
• The device complies with the RF specifications when the
device is used near your ear or at a distance of 1.5 cm from
your body. Ensure that the device accessories such as a
device case and a device holster are not composed of
metal components. Keep your device 1.5 cm away from
your body to meet the requirement earlier mentioned.
• On a stormy day with thunder, do not use your device when
it is being charged, to prevent any danger caused by
lightning.
• When you are on a call, do not touch the antenna. Touching
the antenna affects the call quality and results in increase
in power consumption. As a result, the talk time and
standby time are reduced.
• While using the device, observe the local laws and
regulations, and respect others' privacy and legal rights.
• Keep the ambient temperature between 0℃ and 40℃ while
the device is being charged. Keep the ambient temperature
between 0 ℃ to 40 ℃ for using the device powered by
battery.

Preventing Hearing Damage

Using a headset at high volume can damage your hearing. To
reduce the risk of damage to hearing, lower the headset volume
to a safe and comfortable level.
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