OK, I can see the 4K video thing. I'm not sure the iPhone 7 does that?record 4k video it will eat 256gb but not quit there yet well not 60fps, as for after care never again i had a 5k apple mac pro and it was never fit for purpose as it kept over heating and spent more time being fix than i had it.
every time the logic board was replaced and just done it again under load and got my money back in the end after half a year and taking the shop to scc and then got a refund.
soon as i filed it with the court they caved in and gave me my money back
My iMac worked flawlessly for over 5 years, then the video card failed. They replaced it without any quibble and I had no Apple Care or extended warranty. I just told them it should last longer for the price I paid. They agreed. I don't think I'd have got the same response if it had been a Windows PC.