Firefox is a state-of-the-art web browser that is developed my Mozilla and is used by half a billion people spread around the world. The browser uses free and open-source software to deliver the best online experience for all its users. If you have any doubts about your Firefox browser or if you need help fixing an error you can always call the Mozilla Firefox customer care number and ask for assistance. Certified software experts are available 24 hours a day to give you advanced solutions to resolve any error related to Firefox.