LG 55LN575V User Manual page 110

✎ Do not attach the sticker to a metal part of the TV. Otherwise, your
smartphone cannot recognise the Tag On sticker.
✎ Do not crumple or fold the Tag On sticker. Otherwise, the Tag On is not
recognised
.
✎ To purchase a Tag On sticker, please contact the LG Electronics Service
Centre.
✎ This function is supported only on a smartphone with Android 4.0 (ICS) or
later.