I don't use the watch full time independently, but I do use it quite a bit out & about. Sprint (or T Mo after they bought Sprint, I can't remember) came out with a cheaper $5/month limited plan. I think it was 500 MB & I wanted to see if it made sense to switch. I tracked my usage & noticed that I never used anywhere near 500 MB. (I just looked up the spreadsheet & my average cellular usage over a 35 month period was 164MB/month) There were only three months that I exceeded 500 MB & those were months when I reset the watch & had to stream music for some of my running workouts. If you don't stream music or podcasts, I think you'd be fine on 1 GB. Also, if you happen to be near wifi & can connect to that, you'll also stretch your data allocation, and your battery life.