A more pertinent question is what use cases are better with tablet. There are very very few. Even watching video is non-issue with a 6.3 in as we can put phone closer to our eyes (unless you watch in a group). You get no advantage with tablet using most apps (except maybe drawing/cad type app). With most web-sites being mobile friendly now, web browsing on tablet has little advantage.
And a tablet is just way too uncomfortable to hold and much of a hassle to use on the move.
Agreed.
As I've said, my iPad is literally my "TV" in bed, I use it to watch Netflix, Amazon Prime, YouTube etc.... For longer periods, even then it's not due to the larger display but rather for the fact that I want to use my phone to Text and browse social media while I watch a show.
One issue I had with watching movies on my Note8 was that I'd get texts and then have to minimise the video window to respond to texts, now this gets very annoying when you have multiple WhatsApp Groups for family, friends, and work.
Every now and then I still watch short bursts of YouTube on my phone, e.g vlogs that are no longer than 40mins, and sometimes I put my phone into DND and enjoy Netflix and I am just blown away at the display quality.
Anything further than that the Note blows the iPad out the water. The iPad feels more like a larger iPhone while the Note feels like more of a laptop in your pocket.