If you're not very happy with Firefox for Android, consider switching to Bromite [0]. It's based on Chromium, but includes many privacy patches, including ad blocking, and is completely open source.
Releases are available through an official F-Droid repository as well as GitHub. It is a very well run project.
Releases are available through an official F-Droid repository as well as GitHub. It is a very well run project.
0. https://github.com/bromite/bromite