Samsung PN51E6500EFXZA - Manual (Page 163)

characters long using the remote
control. Select Done when finished.
– If the security key is not at least
9 characters long, Done is not
available.
– To connect a mobile device to the
TV, you must input the security key
into the device.
– If the network does not operate
correctly, check the security key
again. An incorrect security key may