I've also found that I still get creepily-targeted advertising, which is presumably based on IP. For example, I watched a youtube video in Firefox Focus on my iPhone. Later that day, I saw a youtube recommendation for a very similar video (on a topic that I do not ever engage with, except for the single video earlier that days) on my laptop, in Safari.
I use NextDNS on both devices. It's nice, but it's not a silver bullet.
I've also found that I still get creepily-targeted advertising, which is presumably based on IP. For example, I watched a youtube video in Firefox Focus on my iPhone. Later that day, I saw a youtube recommendation for a very similar video (on a topic that I do not ever engage with, except for the single video earlier that days) on my laptop, in Safari.
I use NextDNS on both devices. It's nice, but it's not a silver bullet.