The design of this fanny pack is actually a tight fit one, that means it should be a perfect and exact fit when you put your phone in the larger pocket and there may not be any room left after you zip it, so as to prevent your phone from moving around while you are in motion, making it less bulky and allowing you to carry less while exercising. If you would like to have a fanny pack with a perfect fit for your phone and miscellaneous, this is the perfect one for you.