There are two major things that are geared in the update 5.1. The expansion of Siri’s vernacular — more specifically, the addition of Japanese and a new unlock-to-camera action and Japanese support for Siri. In iOS 5.0, users can activate the camera from a locked device by double-tapping the home button and selecting the icon that appears. The new workflow? Wake the phone, then simply slide the lock screen toward the top of the handset — making this feature easier to use and find.