Huawei M920 - Manual (Page 70)

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Operating Environment
• Do not use or charge the device in dusty, damp, and 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 0.59 inch (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 0.59 inch (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 the 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 32°F (0°C) and 113°F (45°C) while the
device is being charged. Keep the ambient temperature between 32°F (0°C) to
113°F (45°C) for using the device powered by a battery.
Prevention of 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.
Safety of Children
Comply with all precautions with regard to children's safety. Letting the child play with
your device or its accessories, which may include parts that can be detached from the
device, may be dangerous, as it may present a choking hazard. Ensure that small
children are kept away from the device and accessories.
Accessories
Use the accessories delivered only by the manufacturer. Using accessories of other
manufacturers or vendors with this device model may invalidate any approval or
warranty applicable to the device, result in the non-operation of the device, and cause
danger.