Samsung Galaxy Wallpaper Resizer (1080 x 2340)

Samsung kept the standard Galaxy S resolution stable across S22 to S25: 1080 x 2340 pixels on a 6.1-6.2-inch Dynamic AMOLED 2X display. This applies to all four generations of non-Ultra flagships.

Galaxy A-series uses similar 1080 x 2340 on 6.4-6.7-inch Super AMOLED displays (lower refresh rate, slightly different sub-pixel arrangement, but identical wallpaper resolution).

Galaxy Ultra series uses 1440 x 3120 (QHD+) on 6.8-inch displays - higher pixel density and a different aspect ratio. Wallpapers designed at 1080 x 2340 work on Ultra phones but get upscaled, introducing slight softness.

For maximum sharpness across all your Samsung devices, design at 1440 x 3120 (Ultra resolution). The downscale to 1080 x 2340 on standard Galaxy looks sharper than upscale would.

One UI 7 (Android 15) applies a 'Color Theme' that automatically extracts a 5-color palette from your wallpaper and applies it to system UI (quick settings, app icons, notifications). This means your wallpaper choice directly affects the visual theme of the entire phone.

Design implications:

- Wallpapers with strong, distinct colors create more vivid themes. Wallpapers with muddy or low-contrast colors create subtle, sometimes drab themes. - Photos with single dominant colors (a sunset, a flower, a sky) generate cleaner palettes than busy multi-color images. - The theme extraction happens automatically; you cannot directly choose which 5 colors get used. So if you want a specific theme color, choose a wallpaper with that color as the most dominant.

To see the extracted palette: Settings > Wallpaper and style > Color palette. Tap variations to see how the system generates different themes from your wallpaper.