On mobile you can use uBlock as well same as the desktop. If you must
break rule 1 of classic infosec and install adware or malware apps then
you can use software like Adaway to modify your etc hosts and use the
same list from uBlock Origin, same things a piHole but directly on your
phone whether you're on your router or not. You need root to do it but I
figure if you're on this site you probably are.