[mothered]

1. Get phone delivered and say it does not charge or anything (black screen) and proceed to return.
2. Get labels asw and then say that you returned the product as you found it cheaper somewhere else.
3. Get the product and use it for a few weeks (before returning period expires), returning it later saying it just stopped working and give it just as phone saying you binned everything else

You have some very good approaches, however the problem Is Amazon thoroughly and meticulously checks returns, thereby the probability of failure Is moderate to high.

That's why the sealed box method Is out of the question with Amazon.