Site blockers on smartphones

Hi guys,

Not sure if my problem is right in the addiction category here.
I'm addicted and made good progress with blocking porn on my browsers on all my PCs and start daily meditation.

But now I'm really struggling using my smartphone and begin to waste weeks with watching porn more or less regularly again ... This really needs to stop and somehow it seems to be out of my control and I need external restriction to come over it.
To find a complete blocker for the smartphone browsers turned out to be very hard to find. For me an app or a setting which blocks certain sites on my browser would be enough to really improve my problem.

Any suggestions or experiences?

 

Thx a lot, using Mobicip now