IPHONE USERS: So if I get a NEW iphone and iT comes with the ios 11 can I delete that and go back to the old one?

IPHONE USERS: So if I get a NEW iphone and iT comes with the ios 11 can I delete that and go back to the old one? - 1

You can't, unless you jailbreak it.

No. You can't delete iOS in anyway really.

You can't downgrade because.
1. Apple won't let you anyways.
2. Assuming you're talking about the iPhone 8, 8+, or X, there's no older iOS version for those devices other than iOS 11.

No

There a limited amount of time that you can do that, but yes you could, though I don't see the point.

OS on any phone is in firmware memory. You have hacking software that can read and write to that memory, you can do anything you like, but Apple is proprietary and getting your hands on secret RSS that will do it is near impossible.

Why though?