There is a way to study the internals of your Symbian phone by a simple touch of fingertip using this app:
This app will allow you to scratch through your phone and reveal the electronics, battery, SIM-card etc. There is also some funny add-ons you won't find inside a real phone though, they are just to spice up the app a bit.
It works in Symbian^1, Symbian^3, Symbian Anna and Symbian Belle phones and has been implemented using QT 4.7.3 and 4.7.4. Unfortunately keyboard-based Symbian phones have been excluded from this version due to lack of teardown-photos.
There is now also a version for HP Touchpad (WebOS) available in HP App store, and this one is a port from QT to SDL.
Buy It From Nokia Store