@Kangal

Where are the electronics schematics and PCB layout? Get those together then we'll talk.

@Texrat

The thing about the slide-on accessory is that I won't always have it on me (while my phone I will) and it will obviously by its nature be larger than the phone, or at the very least be a pain to carry around so I won't. Chances are it will just get left at home, and it its at home, I'll just use my Xbox.