I was able to work with the iPhone immediately! I bought white but it was light gray! But I was lucky because I like it!
I think I got a defective pair, because there is a buzzing sound when you turn it on, even when not listening anything. Once you start playing music, the music overtakes the buzzing, but you can still hear it. Also for my medium/large size head, it did not fit very securely because of how light it is. You also cannot use it lying down on the bed. I would recommend the "Openear Solo" over this headphone. The Openear Solo is more well built, comfortable and also has volume control. However, the Openear Solo is more expensive than this headphone. If it weren't for the buzzing sound, I would probably like these headphones as a cheaper option, since it was half the price.