Nope. There is data that it sends that is non optional.
Proof: go into settings and disable every tracking options, and then capture traffic from the device through a router with openwrt running tcpdump or wireshark on a computer with a bridge setup with ip forwarding and iptables rule.
Did this experiment already twice to prove to people that Apple device do phone home plenty. Then I repeat the same experiment with my rooted android phone running a custom rom, and people watch the sparse wireshark trace with the only packets being sent are dns then ntp to the android ntp server.
Proof: go into settings and disable every tracking options, and then capture traffic from the device through a router with openwrt running tcpdump or wireshark on a computer with a bridge setup with ip forwarding and iptables rule.
Did this experiment already twice to prove to people that Apple device do phone home plenty. Then I repeat the same experiment with my rooted android phone running a custom rom, and people watch the sparse wireshark trace with the only packets being sent are dns then ntp to the android ntp server.