My mother's partner has an iPhone and has purchased a couple of digital AV adapters (lightning cable to HDMI) to watch videos through his TV. Unfortunately, these only work sometimes, seemingly when they feel like it.
I thought something like a Chromecast would be perfect, except he does not have home internet. Could a Chromecast (or similar) be used with the mobile data on his phone? Or does it actually require a wireless connection to work?
It's pointless for him to pay for the NBN, as he's essentially technologically illiterate (owns an old laptop he won, but has absolutely zero idea how to use it… doesn't use streaming services, etc.)
An Apple TV would provide a seamless casting (AirPlay) experience with an iPhone. Very easy to use and doesn't need it's own internet connection.
Worth noting that some smart TVs have AirPlay feature built-in already (my Sony Bravia does) so you might not even need the Apple TV unit.
https://support.apple.com/en-us/HT204289