3.5 Mb data usage as soon as i pull out of my driveway away from my WiFi. Why is Koodo hitting me with lots of data usage when I am not even using my galaxy?
It's probably your phone trying to find out if there are new emails, or something like that... if you want to make sure not to use any data, you could consider switching off data on your phone, or ask Koodo to perform a data block (but then you couldn't use picture messages any longer).
Smartphones will continuously use background data regardless of if it's on wifi or on the cell network. These can be things such as checking for updates/push notifications or simply background updates. Any data you use on the cell network is billable. Best thing you can do to limit it is turn off your mobile data when you aren't using it.