Apple on Tuesday released iOS 6.1.2, which the company says fixes that maddening Exchange calendar bug. It was only last week when Apple verbally acknowledged a fix was incoming, so it’s nice to see the issue has been squashed rather quickly. The previous bug increased network activity and, in some instances, lead to decreased battery life. Some users even said their Exchange Servers blocked iOS altogether because of the increased network activity. The 12.8 MB update is available now, so just go to your Software Update tab under General in Settings.