Try reinstalling the app it might just be a bug! go here https://play.google.com/store/apps/details?id=org.mozilla.firefox&rdid=org.mozilla.firefox&rdot=1&feature=md

Already tried it, doesn't work. Found a list that showed that the Mega is the only Samsung phone that doesn't support it, go figure. Will have to contact Mozilla support to see if or when it will be supported.

Hi Morpheus:

I haven't tested it but Firefox 26 from the Google Play store should work on the Galaxy Mega. I'd be surprised if it doesn't. It works fine on the 3 other Samsung devices I have.

Please try re-installing Firefox and then if you still have the same issue namely:

QUOTE

I get the Metro PCS default page that says I need the Mobile Hotspot service

END QUOTE

than it's probably a Metro PCS issue because it is possible for your mobile carrier to do things like take over what's displayed when you open Firefox or any other browser. We've had cases of other US mobile carriers changing the home page on Firefox and other Android browsers for example.

If you still get the same Metro PCS issue, does the issue go away when you use another WiFi provider, e.g. at Starbucks?

IF the issue goes away when you use another WiFi provider, it's definitely a Metro PCS issue (in that case please ask Metro PCS support).