When I received the product, I thought I was going to return it, thinking that we had sent me an external battery for another model that my iPhone 6! In fact, on closer inspection, the small cable that comes with, is not used to charge your phone but to recharge the battery when it is empty. When you want to charge your phone, you must use your regular cable that you plug into the external battery on the one hand and on your phone. By cons, it is good ã know that taking small cable, also fits a Samsung making, the same device can be used on my iPhone and the Samsung my spouse.