In a world that values convenience, people are always looking for better ways to interact with their devices. Launched in 2011, Siri is a voice-controlled assistant that was released as part of the ...

When you use an iPhone for the first time – whether it's a new iPhone fresh out of the box or a used phone that you've gotten from another user – you need to activate it to set up cellular service.

Sareena was a senior editor for CNET covering the mobile beat, including device reviews. She is a seasoned multimedia journalist with more than a decade's worth of experience producing stories for ...