Huawei Mobile Phones User Manual page 16

• 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 0 °C and 45 °C while the device is being
charged. Keep the ambient temperature between 0 °C to 55 °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.
Battery and Charger
• Unplug the charger from the electrical plug and the device when not in use.
• The battery can be charged and discharged hundreds of times before it eventually
wears out. When the standby time and the talk time are shorter than the normal
time, replace the battery.
• Use the AC power supply defined in the specifications of the charger. An improper
power voltage may cause a fire or a malfunction of the charger.
• Do not connect two poles of the battery with conductors, such as metal materials,
keys, or jewelries. Otherwise, the battery may be short-circuited and may cause
injuries and burns on your body.