Young female text messaging on bed, teenage sister (16-17) using laptop

Three senior men looking at mobile phone in garden, smiling

Man dialing mobile phone (focus on mobile phone)

Businessman at desks in office, smiling, portrait

Businessman holding mobile phone in elevator, low angle view

Man sitting on boot of car by skis on snow, holding mobile phone

Young man sitting on suitcase in parking garage, using cell phone

Businessman holding mobile phone, close-up, mid section

Businessman holding mobile phone in street

Teenage girl (14-16) lying on bed, holding mobile phone, portrait

Young male professional sitting on armchair, holding cell phone, smiling

Professionals sitting at table, making conference call

Professionals sitting at table, woman dialing landline phone

Hand holding cell phone, text messaging, cropped view

Professional woman sitting on the ground with toddler and agenda, dialing cell phone

Hand Dialing Cell Phone

Woman Using Cell Phone

Businesswoman Using PDA Outside

Businessman Using Cell Phone on Street

Businessman Using PDA on Sidewalk

Woman with Cell Phone

Man using Satellite Telephone

Detail of a Person Dialing a Telephone

Man using Satellite Telephone