How To: Install an .apk file on a Google Android smartphone

How to Install an .apk file on a Google Android smartphone

If you're interested in installing an application that you can't find in the Android Market, you'll need to use an apk (or Android packet) file. Don't know how to load an apk onto your phone? No problem: this Android owner's guide will walk you through the process. You'll find that, with a file manager application like Astro File Manager, it's a snap.