download firefox to mobile smartphone tried to view howto video I never did view video, now a black circle with a moving green arrow is in the top of my screen, and I was given a notice that Im being charged money for something?

Firefox is free, open-source software developed by a non-profit organization. We do not change any money for our software or content.

If your phone is displaying a notification about a charge, you should contact your carrier (T-Mobile, according to the system details above) for more information.