This is a very easy how to. You can do it for nearly every type of phone with a speaker.
You don´t need any electronics or solder iron.
It works and you can fill the room with sound of your mobile!
Step 1: What You Need
You need some copper plumbing parts.
A piece of wood for the base plate.
A paper funnel.
Some glue for paper and metal.
Some two component clay.
A brass screw