[Nabeshin]

Does the one time exception matter what methods used? Can I just sign into an account and claim DNA when an order arrives and they wont investigate?

As stated by @Nabeshin, do not use the DNA with Apple - they tend to release themselves from lability, and ask to deal directly with the carrier.

Just to make It clear, a one-time exception can be offered while the claim Is being assessed and an exclusion will apply. For Instance, If the product required a return but for one reason or another, you couldn't fulfil their request, they'll offer the one-time exception and not expect the return.

So it should be possible to buy an iphone, return it any reason and then FTID them?

That wouldn't even be using the exception, that's a regular FTID refund, not sure how they act on lost packages though