Step 1: Make the base
Everything's colour-coded for easy reference.
Note: The ipod cable runs underneath the middle back plate to keep it tidy.
Step 2: Mobile - Red Unit - Cable on left
I have also built up the left side with a flat 1x4 tile, this pushes the power cable up slightly. Without it, the cable (under gravity) pulls the left hand side of the phone down, putting undue strain on the cable.
Note: I gave it a plinth-like backrest because it's the most important gadget here.