Zte IX380 User Manual page 7

Do not attempt to dismantle the MODEM. There are no user serviceable
parts.
Do not immerse the MODEM in any liquid.
Do not place objects on top of the MODEM. This may lead to overheating of
the device.
The device must be placed in ventilation environment for use.
Do not expose the MODEM to direct sunlight or store it in hot areas. High
temperature can shorten the life of electronic devices.
Do not touch the antenna while calling.
Do not allow children to play with the MODEM or charger.
Keep the length of the cable between the MODEM and the phone less than
33 feet.
The MODEM is for indoor use only. Do not use the MODEM outside. Do not
connect telephone extensions which run outside of the building. These can
result in lightning damage to your unit.
This device has been tested for compliance with FCC RF Exposure (SAR)
limits in the typical laptop computer configuration. This device cannot be Use
with handheld PDAs (personal digital assistants). This device and its antenna
must not be co-located or operated in conjunction with any other antenna or
transmitter.
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