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Try one of these articles:

  • Access Mozilla Services with Firefox Accounts Firefox Accounts is a safe and easy way to access Mozilla Services on all your devices. Learn how to create an account and access services by signing in.
  • Installing apps The Firefox Marketplace has apps designed for your Firefox OS device. We'll show you how to find and install them.
  • Recommendations in Marketplace The Firefox Marketplace now recommends apps that you might find interesting. Learn more about how the recommendations work.
  • Uninstall apps This article describes how to uninstall an application on Firefox OS.
  • Mobile-Optimized Websites in the Marketplace The Firefox Marketplace offers more than just apps: you can discover content specifically for mobile devices too. Learn all about Mobile Optimized Websites.
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