News is seeping out (if thats a good description) of a problem with the ios 6.0.2 update. Seems that the battery life is being hit by a bug in the wireless aspect of the operating system. From some of the reports it seems quite agressive and may actually reduce your battery life between charges. Given that the battery life on the iphone isn’t the best anyway – this is not great news.
So worth avoiding the release until the issue is solved or taking a charger if expecting to be using your Iphone 5 or Ipad mini with wireless a lot.