Teknoblog.com – One of Apple’s rules when approving applications to be exhibited in the App Store, where iPhone applications are sold, is not to allow the use of undocumented APIs during application development. However, one of such APIs was used in the voice search application developed by Google for iPhone. used an undocumented API to add the feature to the app. However, Apple does not allow the use of unauthorized APIs, nor does it guarantee that this API will work when iPhone updates its software. or he’ll have to change the way the proximity sensor is used, he says. However, the biggest concern is that Apple does not have the manpower to thoroughly control all applications from start to finish. The same problem is experienced with carriers, some applications may take months to be approved and available for download.