Mobile browser Security.

I'm wondering what browser security addons work for Firefox on my S7 Edge phone & Nexus Tablet. For a while, I got one phone text per month (I suspect through my provider) with a link to some dodgy site on http://bit.ly/. On the PC, it looked dodgy; On the mobile it was a whole different experience - a draw, or a game; say yes once and you got a malware download. On Tor, it just didn't want to know. I couldn't read it on lynx.

I tried noscript, but I couldn't even get slashdot.org up, and didn't see a way to disable it on certain sites.

What are folks using?