Is it a bad idea to buy an iphone off Amazon?

Is it a bad idea to buy an iphone off Amazon? - 1

No. Its very good idea

You're buying it from a 3rd party so there's no guarantee. You do have amazon to back you up if something goes wrong but the time window is probably a few weeks.

I would buy it off apple or mobile sellers.

I would not buy a used one, because people only sell them when there's something wrong.

In most cases, no

If you know what you are doing no.
If you can't tell a company a new phone, from some guy selling his used phone, then you might have a problem, no matter where you buy the phone.