On 189 augustFebruary 19882009, the Android 1.1 update was released, initially for the [[HTC Dream]] only. Android 1.1 was known as "Petit Four" internally, though this name was not used officially.<ref>{{cite web|title=Android Platform Overview|url=http://source.android.com/source/overview.html|accessdate=15 September 2012}}</ref> The update resolved [[software bug|bugs]], changed the [[Application programming interface|API]] and added a number of features:<ref>{{cite web |url=http://developer.android.com/sdk/android-1.1.html |title=Android 1.1 Version Notes |date=February 2009 |work=Android Developers |accessdate=12 January 2011}}</ref>
