Pressure contacts on the vibrator motor mean that replacing it doesn't require soldering or prying up small connectors.

Unlike the iPhone 4S, which used a linear-oscillating vibrator, Apple has gone back to a rotational motor with a counterweight.

We praised Apple in the past for going with the quieter and less annoying linear oscillating vibrator (Which is made by Samsung), but now we're scratching our heads as to why they went back.