Huawei B320-323 Quick Start Manual page 12

Safety information
This section contains important information about the operation of your
device. It also contains information about how to use the device safely.
Read this information carefully before using your device.
Electronic device
Do not use your device if using the device is prohibited. Do not use the
device if doing so causes danger or interference with other electronic
devices.
Interference with medical equipment
• Follow rules and regulations set forth by hospitals and health care
facilities. Do not use your device where prohibited.
• Some wireless devices may affect the performance of hearing aids
or pacemakers. Consult your service provider for more information.
• Pacemaker manufacturers recommend that a minimum distance of
20 cm be maintained between a device and a pacemaker to prevent
potential interference with the pacemaker. If using a pacemaker,
hold the device on the side opposite the 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.
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.
9