LG TONE Style TONE-NP3C Owner's Manual page 7

If the pop-up does not appear, select [LG-TONE-NP3] from the
Bluetooth menu on the smartphone and connect it (for users of iOS or
Android 5.0 or lower versions).
CAUTION: In the list of Bluetooth connected devices,
!
LG-TONE-NP3_LE is not the correct model name for connection.
Check the model name in use and connect with the model name
without "LE".
If the headset model name is abnormally displayed on the
Android device, change the model name in the Bluetooth menu of
Connected Device Settings.
NOTE: To connect with another device, perform the above procedure
again.
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