Zte MF971R Quick Start Manual page 5

Light off There is neither an
unread message nor a
new message.
Red The device is in error
Network status.
 The device is not
registered to the
mobile network.
 There is no micro-SIM
card inserted.
 There is no network
service available.
Green The device is registered
solid to the 2G/3G mobile
network.
Green The device is connected
blinking to the 2G/3G mobile
network and data is being
transferred.
Blue solid The device is registered
to the 4G LTE network.
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