Huawei U8815N Quick Start - Manual (Page 20)

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• 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 -10°C and 45°C while
the device is being charged. Keep the ambient temperature
between -10°C to 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
Choose only batteries, chargers, and accessories approved for use
with this model by the device manufacturer. The use of any other
type of battery, charger, or accessory may invalidate any warranty for
the device, may be in violation of local rules or laws, and may be
dangerous. Please contact your dealer for information about the
availability of approved batteries, chargers, and accessories in your
area.
Battery and Charger
• Unplug the charger from the electrical plug and the device when
not in use.