[coldpie]

Firefox for Android supports uBlock Origin. Works great, highly recommended.

iPhone solutions seem less advanced, unfortunately, but they exist. Personally I use one called "Adblock Pro," but that's not an endorsement, just the one I tried that has stuck.

[vehemenz]

Adguard for Safari does the trick for Safari on both iOS and macOS.

I've tried others, and they don't seem to do much. Adguard works as well as uBO 90% of the time.

I only see a difference when visiting actual malicious sites, like pirated sports streams, where Adguard might occasionally lets a pop-under through.