I have a home lab set up, where i have a second router that is behind a older laptop with ip forwarding set up so I can inspect the WAN traffic that devices sen

I have a home lab set up, where i have a second router that is behind a older laptop with ip forwarding set up so I can inspect the WAN traffic that devices send out. If you ever take a brand new iPhone and connect it to wifi and inspect the traffic in this manner, you will see all the crap it sends to apple servers. On the other hand, I also have a custom rooted android phone, with no google apps and minimal 3d party apps (use the mobile browser for most stuff). If you inspect it in the same manner as above, the only requests it makes when it turns on is to the ntp time server, which I could probably kill with a firewall if I cared enough, making it 100% silent until I use an app. If you want privacy, you get it yourself.