Everything in the world is subjective. But that's not a useful way of looking at things though is it?
You could debate me to the death about whether the sky is in fact "blue" vs. "aquamarine" or "teal" or "cyan."
But the general consensus is still that the sky is indeed "blue." Just like the general consensus is that the iPhone 6+ is indeed a "phablet."
I agree, so we should just call it blue, that is, phone.