What used 150 MB in 3 days???? It is very easy to do that with a Smartphone....
What do you have syncing and how often??
Are you listening to music or watching videos???
Did you have update requests show up from the marketplace???
Are you accessing the internet??
Are you using the GPS mapping program which needs data to update the maps???
I could go on and on.
Start a new topic or ask questions in the open forum.
