An LG television’s broadcast caption setting is not the universal caption control for every HDMI device or streaming app. First identify the playback source.
LG’s current guidance distinguishes antenna broadcasts from external devices and app-based playback. That distinction prevents repeated changes to a setting that the programme never uses.
Name the source of the picture
If the programme comes from the television’s tuner and antenna, inspect LG’s broadcast caption control. If it comes from an external box, use that box’s caption settings. If it plays inside a streaming app, inspect the app’s playback subtitle or caption menu.
The physical display can remain the same while the responsible caption system changes. A working caption setting on one channel or input does not prove that every other source supplies text.
Use the generation’s supported control
LG’s August 2026 caption guide adds a Hearing Features category for webOS 26 and distinguishes earlier menu layouts. Follow the route for the installed television rather than assuming every model uses the same Accessibility screen.
Inside a player, select a track actually listed for the programme. Styling and language preferences cannot create captions that are not supplied. A channel’s country or the television’s menu language is not proof of the programme’s subtitle languages.
If captions are listed but cannot be selected, record the app, programme and visible behaviour. If no track is listed, ask about content availability rather than reinstalling the player by reflex.
Check readability and the actual result
Once captions appear, assess their size and contrast from your normal seating distance using supported style controls. Confirm that the text belongs to the intended programme and language.
A useful support report names the source, app or box, television model and programme. Ask whether captions are supplied for that specific edition, then describe which control you used and what appeared. Keep account credentials out of the example.
Useful answers
Why does LG’s caption switch not affect my streaming app?
The app can use its own playback controls. LG’s guide distinguishes app and external-device captions from broadcast settings.
Can I add a missing subtitle language through TV settings?
No. The programme or app must supply the track; preferences do not create one.