Siri allows users to work their iPhone without using their hands, and can send messages, make calls and open multiple applications with voice commands alone
Users need to find a balance in the trade off between convenience and loss of privacy
The Cupertino-based company is widely viewed as lagging its rivals in key areas of artificial intelligence.
Siri's behaviour becomes a privacy issue because it can read out messages and emails from third-party apps such as Facebook Messenger, WhatsApp, and Gmail
Shift in Siri's leadership comes as Apple faces competition to get users speaking to its devices
Developers will keep an eye out for hints about new capabilities in the next iPhone