On: Android phones are sending significant amount of user data with no opt-out [pdf]

[eldaisfish]

any DNS-based tool is going to tell you which IP address is being contacted, not what is sent or how much.

You can certainly block domains and that will prevent some google telemetry but a DNS-based tool is not what you're looking for.

[sumtechguy → eldaisfish]

Has anyone played with adding a cert and using a squid proxy to help log what is going on?