Cleaning And Maintenance - Huawei G5521 User Manual

RF signals may affect the electronic systems of motor vehicles. For

more information, consult the vehicle manufacturer.
Do not place the device over the air bag or in the air bag

deployment area in a motor vehicle. Doing so may hurt you
because of the strong force when the air bag inflates.
Do not use your device while flying in an aircraft. Power off your

device before boarding. Using wireless devices in an aircraft may
disrupt wireless networks, present a hazard to aircraft operation,
or be illegal.

Cleaning and maintenance

Before you clean or maintain the device, power it off, and

disconnect it from the charger.
Do not use any chemical detergent, powder, or other chemical

agents (such as alcohol and benzene) to clean the device or
charger. These substances may cause damage to parts or present
a fire hazard. Use a clean, soft, and dry cloth to clean the device
and charger.
Keep the device and accessories dry. Protect them from water

and humidity. Do not touch the device or the charger with wet
hands. Doing so may lead to short circuits, malfunctions, or
electric shocks.
Avoid collision, which may lead to battery leakage, device

malfunctions, overheating, fire, or explosion.
Do not place magnetic storage media, such as magnetic cards

and floppy disks, near the device. Radiation from the device may
erase the information on magnetic storage media.
Do not expose your device, battery, or charger to extreme heat or

cold. These environments may interfere with proper function and
may lead to fire or explosion. Battery performance is affected at
temperatures lower than 0°C.
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