Like its predecessors, the iPhone 5 is known for its quality camera. But when it comes to megapixel bragging rights, Apple is lagging. For instance, the new Sony Xperia Z, an Android phone with Sony's own (and very impressive) Exmor RS sensor, has a 13-megapixel, rear-facing shooter. By comparison, the iPhone 5 has an 8-MP rear camera that also uses a Sony sensor. A ha! Many a blogger has speculated that the alleged iPhone 5S will also upgrade to the new Exmor RS, and hence join the 13-MP club. Given Apple's working relationship with Sony, the move makes sense. On the other hand, Apple may save its major camera makeover for the iPhone 6.