Huawei B311-520 Quick Start Manual page 13

Before you clean or maintain the device, stop using it, stop all applications, and disconnect all cables
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connected to it.
Do not use any chemical detergent, powder, or other chemical agents (such as alcohol and benzene) to
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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.
Do not place magnetic stripe cards, such as credit cards and phone cards, near the device for extended
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periods of time. Otherwise the magnetic stripe cards may be damaged.
Do not dismantle or remanufacture the device and its accessories. This voids the warranty and releases the
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manufacturer from liability for damage. In case of damage, contact an authorized service center for
assistance or repair.
Environmental protection
The device and its accessories (if included), such as the power adapter, headset, and battery should not be
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disposed of with household garbage.
Disposal of the device and its accessories is subject to local regulations. Support proper collection and
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recycling.
FCC Regulatory Compliance
FCC statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
--Reorient or relocate the receiving antenna.
--Increase the separation between the equipment and receiver.
--Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
--Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Caution: Any changes or modifications to this device not expressly approved by Huawei Technologies Co.,
Ltd. for compliance could void the user's authority to operate the equipment.
Please visit http://consumer.huawei.com/en/support/hotline for recently updated hotline and email address in
your country or region.
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