Businesswoman using cell phone

Hand holding flip cell phone

Woman standing at kitchen counter, looking at cell phone, smiling

Businesswoman using cell phone, looking down

Person holding cell phone, cropped view

Businessman looking down at cell phone outdoors, side view, low angle

Boy holding cell phone, side view

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

Man sitting, holding cell phone, smiling at camera

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

Hand holding cell phone, side view

Hand dialing landline phone, cropped view

Little boy outdoors, looking down at cell phone, smiling

Young female looking down at cell phone, side view

Businessman using cell phone outdoors, cropped view

Woman looking at cell phone

Couple using cell phone, low angle view

Woman holding up cell phone, smiling, selective focus

Teenage girl sitting in chair outdoors, holding cell phone, smiling at camera

Woman looking down at cell phone, side view

Businesswoman looking down at cell phone, close-up

Young woman leaning against pole, looking down at cell phone

Teenage girl sitting in chair by the sea, looking down at cell phone, side view

Man in Hawaiian shirt outdoors, looking down at cell phone, smiling

Teenage girl sitting in chair by the sea, looking down at cell phone, smiling

Teenage girl sitting in chair by the sea, holding cell phone, smiling at camera

Male and female colleagues at desk, man using laptop computer, woman using phone

Man sitting on the ground, looking at cell phone, side view

Young woman standing next to pole, looking down at cell phone

Teenage girl sitting in chair by the sea, holding cell phone

Boy in ski gear sitting, using cell phone

Woman sitting in chair outdoors, looking at cell phone

Boy in ski gear sitting, using cell phone

Teen girl sitting, using cell phone, ocean horizon in background

Young businessman using palmtop, looking down, high angle view

Young businessman looking at cell phone, waist up

Businessman using cell phone

Male student in front of window, looking at cell phone

Mature man standing, dialing cell phone, full length portrait

Businessman standing barefoot on beach, holding up cell phone

Mature businessman sitting on ground, looking at cell phone

Businessman using electronic organizer

Male student sitting on the floor, holding cell phone, cropped view

Female student looking at cell phone in front of window, smiling, students in background

Businessman on beach, using cell phone