Depends when Op plans to play - e.g. commuting to work, when home, etc.
I found that when I first got my PS4 I didn't have any time to play and by the time I get home from work I'm so exhausted I just want to watch something and not have to try.
But now that I have a tinsy bit more time, I do enjoy console gaming.
Portable gaming to me is RPGs where you can pick up and play a little bit every now and then, but with mobile phone gaming where it's at, for a casual gamer who just wants to play good stories/old games (e.g. FF9) then iPhone is fine and better off spending the money on a console to get the experience.
This assumes you have a decent TV/couch/etc to play on and aren't fighting to share the TV with someone else!