DIY Cheap Phone Speaker

This is how to make a cheap phone speaker for any phone. Easy to make and barely costs anything.
The Phone Slot

Get a cardboard tube from a toilet paper role. Cut a slot the size of your phone into the cardboard.
Create the Sound Amplifiers.

Cut a hole the same size of the circumference of the cardboard tube into the side of a paper cup. Do the same thing to another cup.
Final Product

Put both cups onto the cardboard tube and put your phone into the cardboard tube. Now you're finished.