My iphone warranty?

This whole topic strikes me as you are getting bad information from your sources.

http://www.apple.com/legal/warranty/products/iphone-english.html

WHAT IS COVERED BY THIS WARRANTY?

Apple Inc. of One Infinite Loop, Cupertino, California, U.S.A. 95014 (“Apple”) warrants the Apple-branded iPhone, iPad or iPod hardware product and accessories contained in the original packaging (“Apple Product”) against defects in materials and workmanship when used normally in accordance with Apple's published guidelines for a period of ONE (1) YEAR from the date of original retail purchase by the end-user purchaser ("Warranty Period"). Apple’s published guidelines include but are not limited to information contained in technical specifications, user manuals and service communications.

No, you cannot buy a phone, stick it in a box for 5 years, activate it and then expect it to be under warranty from the time of activation.

I don't believe anyone is posing these questions to be rude to you. So far all I see are questions asking for the context of how you acquired this device to help answer your initial query. Especially trying to understand if it was a device that was authorized by Apple for sale in the country where you obtained it and planned to use it. There are a lot of gray-market iPhones, and that creates serious issues with getting warranty or out of warranty service from Apple or its network of service providers.

I think one concern was whether or not you received what is known as a "replacement device". Those are only issued as replacements (may be new or refurbished) for previous devices and generally carry the remainder of the previous warranty (or sometimes 90 days). They also have a specific beginning to the model number to identify one as a replacement device.

So however this was handled for you, it depends on whether or not the seller handled it as a sale. Apple says that warranties start on the date of retail sale. So waiting to activate the phone will not delay the start of the warranty period.

The warranty started the day you got the phone, not when you activate it.

Where did you get the blacklisted phone to start with? How did you get an exchange on a blacklisted phone? Who did this exchange?