Huawei G5521 User Manual page 36

Avoid touching the antenna when you are on a call. Touching the

antenna affects call quality, increases power consumption, and
reduces talk and standby time.
Ideal operating temperatures are 0°C to 40°C. Ideal storage

temperatures are 0°C to 40°C. Extreme heat or cold may damage
your device or accessories.
Do not expose your device to direct sunlight (such as on a car

dashboard) for prolonged periods.
Do not place your device or batteries on or in heating devices,

such as microwave ovens, stoves, water heaters, or radiators.
Batteries may explode if overheated.
Stop using your device or applications for a while if the device is

overheated. If skin is exposed to an overheated device for an
extended period, low temperature burn symptoms, such as red
spots and darker pigmentation, may occur.
If your device has a camera flash, do not use it directly in the eyes

of people or pets. Otherwise temporary loss of vision or damage
to the eyes may occur.
Do not allow children or pets to bite or suck the device or battery.

Doing so may result in damage or explosion.
Protecting your hearing when using a headset
headset volume to a safe and comfortable level.
Exposure to high volumes while driving may cause distraction and

increase your risk of an accident.
Child's safety
Comply with all precautions with regard to child's safety. Letting

children play with the device or its accessories may be dangerous.
To prevent possible hearing damage, do not listen

at high volume levels for long periods.
Using a headset at high volumes may damage

your hearing. To reduce this risk, lower the
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