Are you one of those people who needs the newest and flashiest iPhone? Maybe you shouldn't be.

In this video, the speeds of all 15 iPhones that have been brought to market are tested. In the nine years since Apple made these revolutionary phones available, they have certainly changed. From powering up to various benchmarks to turning on the camera and audio prowess to heat and touch, we find that newer is not always necessarily better.

So, keep all this in mind before you run out and get the 7 Plus. Or, maybe just hang on to the 4S and stick it out until you're first in line the day the 8 becomes available.