Cleaning And Maintenance - Huawei Y221-U03 Quick Start Manual

Do not put batteries in fire as they may explode. Damaged
batteries may also explode.
Dispose of used batteries in accordance with local
regulat ions. Improper battery use may lead to fire,
explosion, or other hazards.
Do not allow children or pets to bite or suck the battery.
Doing so may result in damage or explosion.
Do not smash or pierce the battery, or expose it to high
external pressure. Doing so may lead to a short circuit or
overheat ing.
Do not drop the device or battery. If the device or battery is
dropped, especially on a hard surface, and may be
damaged.
If the device standby t ime shortens significantly, replace the
battery.

Cleaning and maintenance

Keep the device and accessories dry. Do not attempt to dry
it with an external heat source, such as a microwave oven or
hair dryer.
Do not expose your device or accessories to extreme heat or
cold. These environments may interfere with proper
funct ion and may lead to fire or explosion.
Avoid collision, which may lead to device malfunct ions,
overheat ing, fire, or explosion.
Before you clean or maintain the device, stop using it, stop
all applicat ions, and disconnect all cables connected to it.
Do not use any chemical detergent, powder, or other
chemical agents (such as alcohol and benzene) to clean the
device or accessories. These substances may cause damage
to parts or present a fire hazard. Use a clean, soft, and dry
cloth to clean the device and accessories.
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