In apple iphon 6s there is a brilient sound qualites it have 3.mm jack which is very good. This model of apple is easy tio use because it contain more features. Have a stylush body with a 750×1334screen size and have less weight then other models of apple. This iphon contain 2GB ram and also dual core processer wich pervent from hanging of device. This iphon have great durability and reliability.