Google, facebook, etc are pretty horrible surveillance networks if that is what they are, considering you can just choose to not communicate with their services and they aren't surveilling you any more.
You're also likely to be using Google's DNS (8.8.8.8) without knowing, because some piece of software decided to hardcode that DNS server.
And your friends have almost certainly already uploaded your data to Google's Android backup service and to WhatsApp's database.