As the phone manufacturers are the same as the danguses adding ads everywhere, the only other option I can think of is to proxy your traffic through another service that does server side ad blocking, and that seems like quite a headache if you want to, for instance, unblock certain content.
Well if you don't run a firewall, I use NetGuard, you could run adguard. The payed version will protect all your aps whereas the free one just protects a few browsers (which can be done easier with the browsers themselves).