I saw in the description that this smartphone does not have a jack socket, but in the scope of delivery it is listed that headphones are included, but no usb-c adapter. 1. do they really ship headphones with a smartphone that doesn't have a jack? I don't think these are Bluetooth headphones. Is it? 2. does anyone know if aptX HD is compatible with aptX? I already have aptX headphones, but since the algorithm is not the same for both codecs, I wonder if I can still enjoy the better sound quality.