“A Call from the Past, the Call for the Future”
Two detectives communicate through a walkie-talkie to solve a cold case. One detective exists in the present day, and the other detective exists 15 years in the past.
2 landscape wallpapers · click any to open Mac Mode
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Last updated: June 9, 2026
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Quick answers about Signal wallpapers, cast, and downloads.
Moviely has 2 free Signal cinematic wallpapers available to browse, preview in Mac Mode, and download.
Yes. Every Signal backdrop on Moviely is free to preview and download for personal desktop or mobile wallpaper use.
Signal wallpapers include 4K and HD options. Moviely recommends the best size for your screen and offers original-quality downloads when available.
Yes. Open any Signal wallpaper in Mac Mode to preview it on a desktop or iPhone lock screen before downloading.
Open the Signal page, pick a backdrop, choose your preferred resolution (HD, Full HD, or Original), and click Download.
Yes. Select Signal backdrops are available in 4K / original quality for high-resolution displays.
Signal first aired in 2018. Moviely hosts cinematic wallpapers captured from the TV series's official backdrop imagery.
Signal is categorized as Crime, Drama, Mystery.
Akira Uchikata directed Signal.
Signal stars Kentaro Sakaguchi, Kazuki Kitamura, Michiko Kichise, Yuichi Kimura, Tetsuhiro Ikeda, and more.
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