Garmin Connect has used almost 5gb of my cellular data this past month costing me an extra $30 on my cellphone plan than usual (I don't really use data so I have a pay for what you use plan). I did have live tracking on, but based on what live tracking should use that does not make any sense.
I have seen similar posts to this but none with a solution. I have turned off live tracking and Garmin Connect cellular data now, but I wish I could use it.