Tutorial · 5 min
How to Make AI Phone Wallpapers That Fit
An AI phone wallpaper has to do something a desktop wallpaper does not: share the screen with your clock, lock-screen widgets, and a grid of app icons. That means the framing matters as much as the image itself. Generate in 9:16 portrait, match your phone's pixel dimensions, and leave the middle and top breathing room.
This guide covers the exact sizes for popular phones, prompts that survive having icons placed on top of them, and how to avoid the stretched, off-center look that happens when you crop a landscape image to fit a vertical screen.
Use 9:16 portrait, not a cropped landscape
Phones are tall, so always generate in the 9:16 portrait preset. If you make a 16:9 landscape image and crop it down, you lose most of the scene and the focal point usually ends up in the wrong place. Starting in portrait lets the generator compose for a vertical frame from the beginning.
Match your phone's exact pixel size
Common targets: iPhone 15 / 15 Pro at 1179x2556, iPhone 13/14 at 1170x2532, Pixel 8 at 1080x2400, and many Samsung Galaxy S models at 1440x3120. A wallpaper at or above your screen's native pixel count stays sharp; one below it gets upscaled by the phone and goes soft. When in doubt, 1440x3120 covers almost every modern phone with room to spare.
Keep the center and top clear
On the lock screen, the clock sits near the top-center and notifications stack below it. On the home screen, icons fill the lower two-thirds. So put your most detailed or bright area toward the top edge or bottom, and keep the middle calmer. A prompt like "single tree on a hill, large empty sky above, soft gradient" leaves natural negative space for the clock.
Prompt ideas that work on a busy screen
Simple, low-contrast scenes read best under icons: "foggy mountains, muted blue-grey, minimal," "dark gradient with subtle stars," or "soft abstract waves, deep purple to black." Dark wallpapers also make light app labels easier to read. Avoid tiny text or fine patterns across the whole frame, since icons will chop them up.
Lock screen vs home screen
You can use different wallpapers for each. Many people pick a more detailed image for the lock screen, where it is seen full, and a quieter, darker one for the home screen where icons cover it. Generate two variations from the same prompt by changing one word, like swapping "bright" for "muted."
Frequently asked questions
- What size should an iPhone wallpaper be?
- Match your model's native resolution, for example 1170x2532 for an iPhone 13/14 or 1179x2556 for an iPhone 15. Larger is fine; the phone scales it down cleanly.
- Why does my wallpaper look zoomed in on my phone?
- Usually the aspect ratio is wrong. If you used a landscape or square image, the phone crops it to fill the tall screen. Generate in 9:16 portrait to avoid this.
- How do I keep the clock from covering the image?
- Compose with empty space near the top-center. Use prompts that include a large sky, gradient, or open area so the clock and widgets have room.