The Android Marketplace has tens of thousands of applications for Android-powered phones. Some of the applications are free while others have a fee. Other Android application stores are available, including the Amazon App Store, but to install applications from locations other than the official Android Marketplace, you must set your phone to accept applications from unknown sources.
Tap the "Applications" icon on the home screen of your Android phone, scroll to "Settings," and touch the icon or press the "Menu" key on the phone and tap "Settings."
Tap "Unknown Sources" if it has a green check in the check box. Press the "Home" key to return to the Android home screen.
Tips & Warnings
- To turn on the ability to install non-Marketplace applications, tap "Unknown Sources" and touch "OK" on the warning screen.
- When you turn on "Unknown Sources," you leave you Android phone vulnerable to viruses or malware, and also risk having personal information compromised. If you must turn on "Unknown Sources," you should only install non-Marketplace applications from trusted sources and turn off "Unknown Sources" immediately after installing your application.
- Photo Credit Ethan Miller/Getty Images News/Getty Images
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