I honestly don't find this offensive or insensitive... Every company should be able to pay respect in their own way. Just because a product is shown in the tribute doesn't instantly make it in poor taste.
its showing the twin towers memorial through a phone. at&t is a phone service provider. it makes perfect sense. you cant even tell what phone it is. idk why anyone would be upset about it.
It is distasteful but you're all overreacting. If you guys saw that photo on your Instagram or Tumblr feed you would think it's the coolest artsy/creative thing.
The overreactions... I honestly barely see a problem, as I was expecting it to be an literal ad for the iPhone 5S with an apple logo at the bottom.