Since Apple battery life and performance choose the life

Apple's media from the current trend of view, the media's meaning is roughly: Since Apple's battery life and performance, choose the battery life, it should be for the affected iPhone users free replacement of batteries to ensure that users enjoy the product during use Equipment should have the performance.

However, from an Apple point of view, iPhone distribution around the world, if you really want to free mobile phone battery, which is a loss-making choice, this is not realistic.