Wallpaper Guides

Practical guides for setting and choosing phone wallpapers — how to apply them on iPhone and Android, the right size and 9:16 aspect ratio, dark wallpapers and battery life, and more.

• How to Set a Wallpaper on iPhone

  Saving a wallpaper to your iPhone takes about thirty seconds. Here is the exact flow, plus a couple of tips so the image fits perfectly without being zoomed in.

• How to Set a Wallpaper on Android

  Android makes wallpapers easy, though the exact menu names vary by brand. Here is the general flow that works on Samsung, Pixel and most other phones.

• Phone Wallpaper Size & the 9:16 Aspect Ratio

  A wallpaper looks its best when its shape matches the screen. Here is what "9:16" means and why it is the most reliable choice for modern phones.

• Do Dark Wallpapers Save Battery? OLED Explained

  You have probably heard that dark wallpapers save battery. It is true — but only on certain screens, and only some of the time. Here is the honest version.

• Choosing Wallpapers for Lock Screen vs Home Screen

  The lock screen and the home screen have different jobs, so the wallpaper that suits each one is different too. A few simple rules make both look polished.

• How to Write Great AI Wallpaper Prompts (with Examples)

  The wallpapers on PicLoy are made by describing a scene to an AI image model in plain language. Here is how those descriptions — prompts — are built, and five examples you can adapt to make your own.