This Case for iPhone4 is very poorly designed. It has a magnet back down on top of the iPhone and obstructing the movement detector "black line" above the speaker. The iPhone does not know if there is connection or not: The most glaring example: at 9 am the load is 100% at 15 hours the load dropped to 13% without using my phone. My rating is, and I hate my review; Do not purchase this item or article with the magnet at the front. Thank you. Michele Perrault [email protected]