Through this forum and some other research, I found earbuds and an armband that work for the G3.
The armband is the Tune Belt AB91. It has cutouts in the bottom for the headphone jack. I have a Spigen Slim Armor case on mine, and it fits perfectly. http://www.amazon.com/gp/product/B0...ag=hawk-future-20&ascsubtag=UUacUvbUpU4210579
The earbuds are OEM Samsung ones for the GS4 and GS5. The three button inline remote/mic works for making calls and turning the volume up and down. http://www.amazon.com/gp/product/B0...ag=hawk-future-20&ascsubtag=UUacUvbUpU4210579
The armband is the Tune Belt AB91. It has cutouts in the bottom for the headphone jack. I have a Spigen Slim Armor case on mine, and it fits perfectly. http://www.amazon.com/gp/product/B0...ag=hawk-future-20&ascsubtag=UUacUvbUpU4210579
The earbuds are OEM Samsung ones for the GS4 and GS5. The three button inline remote/mic works for making calls and turning the volume up and down. http://www.amazon.com/gp/product/B0...ag=hawk-future-20&ascsubtag=UUacUvbUpU4210579