I literally can't keep the wireless earbuds in! I don't know if my ears are too small or weirdly shaped on the inside or what. Sometimes I can kind of wedge them in for a minute, but only by having them actively digging into the sides of my ear. That hurts and it still falls out as soon as I move my head.
My current phone doesn't have a micro SD card slot, but that's another improvement I would really like to have. I like to keep a lot of pictures and files on my phone and it would be great to be able to upgrade the storage as it fills up.