Steven Soderbergh has done this too, for his thriller “Unsane” and sports drama “High Flying Bird.” Charlie Kaufman’s poetic short film “Jackals and Fireflies” was shot on a Samsung Galaxy, and Danny Boyle’s upcoming zombie movie “28 Years Later” was made with an iPhone,

The spy thriller’s vaguely impressionistic feel is due to the desire of Burger — whose movies include “The Illusionist” (2006), “Limitless” (2011), “Divergent” (2014) and 2023’s disappointing “The Marsh King’s Daughter” — for the production to go unnoticed on location in population centers around the globe including New Delhi, Seoul and Cairo.