How to set a wallpaper on iPhone Duo

No app can change your wallpaper for you. Save the image to Photos, then set it in Settings in three steps.

1. Open Settings, choose Wallpaper, then Add New Wallpaper.
2. Pick from Photos. A wallpaper you just saved is at the top of Recents.
3. Place and confirm. Adjust it, tap Add, and set it for the Lock Screen, Home Screen or both.

These are Apple's documented steps for iPhone. Apple has not yet documented separate wallpapers for the cover and inner displays on iPhone Duo. We will update this page with a dated, hardware-tested answer.

Where to get wallpapers sized for it

Twofold is a free wallpaper app for iPhone Duo that saves matched cover and inner screen sets at exact pixel sizes, with no ads and no data collected. Download Twofold.