Hand holding new HTC G1 Google mobile phone showing Google's Android technology.

Manhattan, New York City, USA: A businesswoman with short dark hair, talking on a mobile phone while walking along a busy sidewalk.

A businessman with grey hair talking on a mobile phone in Manhattan, New York City, USA.

Manhattan, New York City, USA: A man in a baseball cap and raincoat talking on a mobile phone while walking along a busy street.

Manhattan, New York City, USA: A businessman carrying a laptop computer shoulder case talking on a mobile phone while crossing a busy road.

Manhattan, New York City, USA: Tracking shot following an unidentifiable man talking on a mobile phone while walking along a busy street carrying a backpack.

Two businessmen dressed in raincoats using mobile phones while standing on a busy street in Manhattan, New York City, USA. Crowds of pedestrians pass by in the background.

Manhattan, New York City, USA: A tall, bald-headed, well-dressed businessman wearing a suit, yellow tie and sunglasses talks on a mobile phone while walking along a busy sidewalk.

Manhattan, New York City, USA: Two businessmen talking on mobile phones. One man wears glasses.

A businessman wearing a raincoat using a mobile phone while standing on a busy street in Manhattan, New York City, USA.

An unidentifiable businessman using a Blackberry handset as a mobile phone on a busy street in Manhattan, New York City, USA.

A man talks on a mobile phone / cell phone while walking along an Autumn tree-lined pathway. The sun bursts through the trees in the background.

Moving shot of camera screen on mobile phone held up to camera as it is carried along through park, camera screen shows trees in park

A man wearing a leather jacket dialling a number on a mobile phone and putting it to his ear as he walks along a busy street in Manhattan, New York City, USA.

Manhattan, New York City, USA: An unidentifiable businessman walking while talking on a mobile phone.

Manhattan, New York City, USA: Hands of an unidentifiable woman typing a text message into a mobile phone.

Close view looking down at male hand using thumb to text message on silver mobile camera phone against green grass background

Manhattan, New York City, USA: A well-dressed businessman talks on a mobile phone while entering a parked taxi.

Manhattan, New York City, USA: Tracking shot following a businessman walking along a busy street while talking on a mobile phone.

South Africa: Side view of a man talking on a mobile phone, he is smiling as he talks.

Manhattan, New York City, USA: Two businessmen dressed in suits, one young, one older, talking on mobile phones while crossing a busy street. The younger man also carries a Blackberry handset.

Manhattan, New York City, USA: Close-up of an unidentifiable businessman wearing a Bluetooth mobile phone headset over his ear.

Hands of an unidentifiable man holding a Blackberry handset while he walks along a busy street in Manhattan, New York City, USA.

An unidentifiable businessman dressed in a blue shirt using a Blackberry handset while walking along a busy street in Manhattan, New York City, USA.

USA: Person using an Iphone, pointing to apps on the touch screen, selecting and using a health app