So I got my new iPhone 6S Plus, although it is in a box somewhere in the pile while I was away. Last night I stopped by AT&T to see about getting a replacement for my current hot spot since its batetry life is now under an hour. After getting some options on a hot spot, I was about to leave the store when I asked one last question that has opened some interesting options for me... I asked the kid what AT&T could offer me as far as a plan for my new iPhone - which is to used for testing website text messages and demoing sites. TO my surprise, the kid sad I could keep my current plan, and add the iPhone for about an extra $5.25 per month?! Wow! I am interested in doing this HOWEVER, because I am someone who is a big believer in privacy, I am worried what the gotchas might be, and thus I am creating this thread. Where could I lose privacy if I switched from accessing the Internet on my hot spot versus on my new iPhone? I usually use a VPN, so my IP should be protected whether I use free wi-fi or my hot spot or my iPhone. However, it seems to me that it is easier fro AT&T to track my online activity is I am tethering my MacBook Pro to my iPhone to get Internet access. If there are any provacy or security experts out there, I would appreciate your thoughts on this! Thanks.