For the last 24h (even less) Firefox used about 30 gb of mobile traffic on my lg x power2, and so did OC Android, the app in it that is shown as "Font server". I ve blocked that font server and deleted Firefox, the traffic loss stopped. The screenshots included. Firefox is shown as deleted (the 1st line). I neither watched video using firefox, nor downloaded large files. So I can´t use this browser any more, and the question is how could it happend?!? I just can´t imagine what could spend so much traffic for that period of time? And why Firefox was the app that did it?