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How To • 3 min read

How to Set a 4K Wallpaper on Windows, Mac, iPhone and Android

By Mükremin Ergül on 2026-02-02
How to Set a 4K Wallpaper on Windows, Mac, iPhone and Android

Step-by-step instructions for changing your wallpaper on every major device.

Downloading a wallpaper is only half of the job. Here is how to apply it on each platform.

Windows 10 and 11

Save the image, right-click it and choose "Set as desktop background". Or open Settings → Personalization → Background, pick "Picture" and browse to the file. Under "Choose a fit" select "Fill" for 16:9 wallpapers.

macOS

Open System Settings → Wallpaper, click "Add Photo" and choose your file. You can also right-click the image in Finder and pick "Set Desktop Picture".

iPhone

Download the 9:16 mobile version, open it in Photos, tap the share button and choose "Use as Wallpaper". Pinch to position it, then choose Lock Screen, Home Screen or both.

Android

Open the image in your gallery, tap the three-dot menu and choose "Set as wallpaper". Samsung, Xiaomi and Pixel phones let you pick home screen, lock screen or both.

Tip: use the format buttons on each wallpaper page to download the right crop for your device, so nothing important is cut off.