Satisfaction studies can sound like broken records, with familiar leaders and positions that don't move. Not so with J.D. Power's first smartphone survey for 2013. While Apple maintained the top spot for the ninth time in a row through US customers' happiness with the hardware design and ease of use, most of its major competitors made big strides in reliability, speed and camera quality in the past half-year -- to the point where there was a virtual dead heat for second place between HTC, Motorola, Nokia
