Huawei Consumer Cellular Envoy User Manual page 28

explosion, leakage, or other hazards.
Replace the battery only with an IEEE-Std-1725

standard qualified battery. The use of an unqualified
battery may lead to fire, explosion, leakage, or other
hazards.
Do not disassemble or open, crush, bend or deform,

puncture or shred the battery. Otherwise, it may lead
to electrolyte leakage, overheating, fire, or explosion.
Do not solder battery poles or dismantle the battery.

Doing so may lead to electrolyte leakage, excessive
heat, fire, or explosion.
Cleaning and maintenance
Keep the device and accessories dry. Do not attempt to

dry it with an external heat source, such as a
microwave oven or hair dryer.
Do not expose your device or accessories to extreme

heat or cold. These environments may interfere with
proper function and may lead to fire or explosion.
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
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