Thanks for the quick reply. Basically I want to bring my Android phone near a Raspberry Pi (which won't have Internet available). I want my android phone to have been synced already via mobile data. Then when I bring it out to the Raspberry Pi, let's say in a cabin in the woods, it synces up the files to mirror those on my phone. Is there a better way besides how I am thinking? Mobile phone won't have PAN, and won't be rooted, and without wifi tether. My mobile phone will have Internet signal, but no Wifi in the cabin for the Raspberry pi to use. How can I get the two to talk and sync up seemlessly?