Huawei E8278 Quick Start Manual page 73

Avoid collision, which may lead to device malfunctions, overheating,

fire, or explosion.
Before you clean or maintain the device, stop using it, stop all

applications, and disconnect all cables connected to it.
Do not use any chemical detergent, powder, or other chemical

agents (such as alcohol and benzene) to 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 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 manufacturer from liability
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