Not a phone, but back in high school I had an iPod Video (5th gen). On a trip to a one act competition, my friend and I duct taped my iPod to the bus seat and watched Monty Python and the Holy Grail. Actually she tried to watch it, I fell asleep and she got a lovely picture of me passed out, mouth agape, forehead next to the lying next to the affixed iPod.
My old Cherokee had an aftermarket 3.5" or 4" screen to go with its in-dash DVD player. I can’t tell you how many movies I watched on that tiny little thing while working security stakeouts. A phone with audio to the speaker system would have been an upgrade.