Ashley Cooper / Chinese tourist from Antarctic expedition cruise ship taking selfie with Gentoo penguin (Pygoscelis papua) that has walked up to her. Antarctic Peninsula, Antarctica. February 2019.

Juan Carlos Munoz / Woman wearing traditional costume of flower seller photographing group also in traditional costume. The Stone Forest, Shilin Yi, Yunnan Province, China. 2016.

David Fleetham / Two girls in traditional costume for cultural ceremonies taking a photo with a smartphone on beach. Yap, Micronesia. September 2013. Model released.

Mark Taylor / Black-and-white kitten, Solo, 6 weeks, 'taking a selfie'. Composite image.

Gavin Hellier / Row of modern public telephones in modern train station, Berlin, Germany 2009

Bryan and Cherry Alexander / Nenets spectator using his mobile phone to photograph a reindeer race at a herders festival in the Yamal. Western Siberia, Russia, February 2009. Editorial use only.

Bryan and Cherry Alexander / Khanty woman using a mobile phone in Nadym. Yamal, Northwest Siberia, Russia, February 2007. Editorial use only.

Bryan and Cherry Alexander / Nenets woman using a mobile phone. Yamal, Northwest Siberia, Russia, February 2007. Editorial use only.

Bryan and Cherry Alexander / Chukchi woman using an Iridium Satellite phone at reindeer herders' winter camp. Chukotskiy Peninsula, Chukotka, Siberia, Russia, spring 2010

Bryan and Cherry Alexander / Inuit hunter using Iridium satellite telephone on the Melville Peninsula, Nunavut, Canada, 1999.

Bryan and Cherry Alexander / Inuit hunter using Iridium satellite telephone on the Melville Peninsula, Nunavut, Canada, 1999.

David Woodfall / Woman standing in doorway using mobile phone at her home in industrial slum, Bhopal, Madhya Pradesh, India, November 2008