Areas With Flammables And Explosives; Traffic Security; Operating Environment - Huawei F688 Quick Start Manual

pacemaker and do not carry the device in your front pocket.

Areas with flammables and explosives

Do not use the device where flammables or explosives are stored (in a gas station,

oil depot, or chemical plant, for example). Using your device in these environments
increases the risk of explosion or fire. In addition, follow the instructions indicated
in text or symbols.
Do not store or transport the device in containers with flammable liquids, gases, or

explosives.

Traffic security

Observe local laws and regulations while using the device. To reduce the risk of

accidents, do not use your wireless device while driving.
Concentrate on driving. Your first responsibility is to drive safely.

Do not hold the device while driving. Use hands-free accessories.

When you must make or answer a call, pull off the road safely and park the vehicle

first.
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 or immediately before boarding.

Using wireless devices in an aircraft may disrupt wireless networks, present a
hazard to aircraft operation, or be illegal.

Operating environment

Avoid dusty, damp, or dirty environments. Avoid magnetic fields. Using the device

in these environments may result in circuit malfunctions.
Before connecting and disconnecting cables, stop using the device and disconnect

it from the power supply. Ensure that your hands are dry during operation.
Place the device on a stable surface.

Keep the device away from electronic appliances that generate strong magnetic or

electric fields, such as a microwave oven or refrigerator.
During thunderstorms, power off your device and remove all cables connected to it

to protect against lightning strikes.
Do not use your device during thunderstorms to protect your device against any

danger caused by lightning.
Ideal operating temperatures are 0°C to 40°C. Ideal storage temperatures are

-20°C to +70°C. Extreme heat or cold may damage your device or accessories.
Keep the device and accessories in a well-ventilated and cool area away from

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