Spectacular and amazing Aurora Borealis. Have on your phone the beauty of our world. Typically the aurora appears either as a diffuse glow or as "curtains" that approximately extend in the east-west direction. At some times, they form "quiet arcs"; at others ("active aurora"), they evolve and change constantly. Each curtain consists of many parallel rays, each lined up with the local direction of the magnetic field lines, suggesting that auroras are shaped by Earth's magnetic field. Indeed, satellites show electrons to be guided by magnetic field lines, spiraling around them while moving towards Earth. SDCard installation available. This is a Live Wallpaper, so, here's what you have to do to install it: STEP 1. Tap and hold Press the home button to first go to the homescreen. On the homescreen, just tap and hold on any blank spot until a context menu appears. STEP 2. Tap on “Wallpaper” and then “Live Wallpaper” In the menu or dialog box that showed up in STEP 1, just tap on the “Wallpaper” option, and then the “Live Wallpaper” menu item. STEP 3. Select Bloody Birds Live Wallpaper STEP 4. Tap "Set Wallpaper" to set it or "Settings" to configure it This free app is ad supported and may contain ads in the notification tray and/or home screen.