Web applications · Research guidance. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Identify what was actually installed
A browser can install a website as a web app and give it an icon and its own window. Google describes offline and storage features as capabilities that some web apps include, while warning that full operation can still need an internet connection. Installation therefore says little by itself about the data required for a particular programme.
Consider a saved-shell example
A web app might reopen a previously stored page layout while the selected media still needs a network request. This is an illustrative distinction, not a test result for a named player. Seeing familiar menus while disconnected does not prove that the video itself has been downloaded or that an account’s authorisation can be checked offline.
Ask the content-specific question
Use the publisher’s current documentation for whether the exact app and programme support downloads, which device is eligible and what expiry or sign-in conditions apply. Do not infer those conditions from a home-screen icon, a generic browser-install prompt or a storage permission. Those are interface capabilities rather than a complete service offer.
Test the real intended task
Before relying on a disconnected session, use the legitimate app’s supported preparation and verify the specific intended item in that environment. Keep an ordinary online fallback when needed. A successful homepage launch and successful programme playback are separate observations, and a result for one title should not be promoted into a universal offline-viewing claim.
Questions, answered
Does installing a website download every programme?
No. Check the publisher’s exact supported download feature.
Does an offline menu prove offline playback works?
No. It is a different observed task.