This smartphone holder for the Samsung Galaxy Ace, you can comfortably watch movies and listen to music. The speaker of the Ace is mounted on the back site so there is a hole in the holder to redirect the sound to the two holes on the right and the left of the holder. Thus, the sound comes from the front and is louder. The inclination angle is 30 degrees. All connections like USB/charging jack and headphone can be used.
I have uploaded two versions:
with rounded corners, looks better, is more difficult to print
Since my printer was not calibrated optimally, the term is unfortunately not become 100% perfect.