One of the big issues with that phone was that in order to do dynamic perspective, you're having to run a 3D render at 60fps constantly. That's a huge power hog, and prevents you from doing many of the power savings techniques you otherwise could on a normal phone -- shutting down the GPU, reduced refresh rate, heck, even RAM backed displays.
Tangentially involved in that project.
One of the big issues with that phone was that in order to do dynamic perspective, you're having to run a 3D render at 60fps constantly. That's a huge power hog, and prevents you from doing many of the power savings techniques you otherwise could on a normal phone -- shutting down the GPU, reduced refresh rate, heck, even RAM backed displays.