Hi my name is Dave from Wisconsin - I just purchased a new Samsung Galaxy 4 Mini from U.S. Cellular. I have never had a smart phone before - only had a glorified cell phone with 300 minutes for texting and basic phone use. So, I got a smart phone for the same price I paid before, but not I only have 300 mb of data which I have setup and control on the data usage of the phone. And I know when I am at home I am using WI-FI only. But - when I go to work (no WI-FI) how can I assure myself I am not using data with the phone just being on standby? I clicked RESTRICT BACKGROUND - & unchecked AUTO SYNC in the Mobile settings of the phone. Did I answer my own question and am now good to go? You see I am not big at checking email, being on the internet much (except for weather sites of live radar) - so I am trying to get the most bang for bucks. Thanks for any information you provide...Dave