Operating Environment - Huawei Straight Talk H258C User Manual

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
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disconnect it from the power supply. Ensure that your hands are dry during
operation.
Place the device on a stable surface.
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Keep the device away from electronic appliances that generate strong
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magnetic or electric fields, such as a microwave oven or refrigerator.
During thunderstorms, power off your device and remove all cables connected
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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 -10 °C to +55 °C. Ideal storage temperatures
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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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direct sunlight. Do not enclose or cover your device with towels or other
objects. Do not place the device in a container with poor heat dissipation, such
as a box or bag.
Do not expose your device to direct sunlight (such as on a car dashboard) for
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prolonged periods.
To protect your device or accessories from fire or electrical shock hazards,
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avoid rain and moisture.
Keep the device away from sources of heat and fire, such as a heater,
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microwave oven, stove, water heater, radiator, or candle.
Do not place any object, such as a candle or a water container, on the device.
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If any foreign object or liquid enters the device, immediately stop using it,
power it off, and remove all cables connected to it. Then, contact an
authorized service center.
Do not block device openings. Reserve a minimum of 10 cm around the

device to dissipate heat.
Stop using your device or applications for a while if the device is overheated. If
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skin is exposed to an overheated device for an extended period, low
temperature burn symptoms, such as red spots and darker pigmentation, may
occur.
Do not touch the device's antenna. Otherwise, communication quality may be

reduced.
Do not allow children or pets to bite or suck the device or accessories. Doing
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