@Edent That TV is probably over a decade old, too late to return it. And we're very satisfied with it, it can receive ISDB-Tb and AV and HDMI content without any issue, my only complaints are it broadcasting that Bluetooth device whenever it's turned on, and that some TV networks broadcast a very wrong date/time making its channel guide (received over the air from these same TV networks) less useful.

@Edent I've seen the TV appear when playing with nRF Connect, so I did a web search to find what it was (and saw the complaints about that popup), but I never tried it myself.

@Edent Our LG smart TV, which was never connected to any network, shows up as a Bluetooth device whenever it's turned on. I've read somewhere that anyone attempting to connect to that device will cause it to pop up a dialog box on top of whatever we're watching. So yeah, there can be other annoyances to a smart TV even when you deny it a network connection.