Whether it's the brand, app, or the earbud model's fault, the quality of life functions are just bad. My Jabra Elite 75t only allows the right earbud to work alone, not the left. And when that earbud disconnects or its battery dies, the entire app forgets its customization settings and I have to go through the maze of settings and reinput them again and again. I would not recommend this brand and its products, but if you read this, it's probably too late.