Indeed, the built-in speaker in the iPhone does not have a fantastic sound performance. To increase the quality of the sound produced by your iPhone, you can purchase a pair of external speakers to connect to your device. Obviously this is an expensive solution, and sometimes a little extra volume can be all you really need. If that's the case, you can build a pair of loudspeakers in under 5 minutes. You can involve even the little ones in the activity to have fun together.
Steps
Step 1. Get all the necessary materials
Please refer to the 'Things You Will Need' section.
Step 2. Cut out a rectangular opening in the center of a cardboard roll (such as the paper towel roll) to accommodate the base of your iPhone
Cut only three sides of the opening so that the fourth side can become the back support of the iPhone, as shown in the image.
Step 3. Cut out a second rectangular opening on the cardboard cylinder to be able to easily reach the 'Home' button and the controls on the iPhone screen
In this case, cut all four sides of the opening. This step is optional. If you don't want to create this second opening, whenever you want to change the volume settings or change songs, you will have to remove the iPhone from the structure.
Step 4. Draw two circles on the outside of the paper cups
To do this, use the cardboard cylinder section as a reference. Now cut out the two glasses following the trace just drawn.
