Phone Amplifier for Galaxy S4

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I crafted this device after observing that placing my phone on a notepad and exposing the speaker significantly amplified the sound, prompting me to create this solution. Print at 20% infill density for optimal results. I printed this model with a layer resolution of .1 mm. To prevent warping, use a brim and generously apply hairspray. My standard printing settings include an extruder temperature of 200 degrees and a bed plate temperature of 50 degrees Celsius. However, you may need to adjust these settings based on your specific filament brand for the best outcome. It functions flawlessly.