It is hard to estimate the exact amount of data a device uses.
Within our portal on your subscription page you can view the past and present data usage of your device.
You can also see the individual usage sessions in the "sessions" tab on this page.
to estimate your costs we provide below example:
You have a tracker in your car and you drive 4 hours a day and 5 days a week.
In this case we estimate that your GPS tracker sends an update every 5 minutes, thus 12 times an hour.
4 hours x 21 workdays = 84 hours (a month)
84 x 12 = 1008 KiloBytes (less than 1 Megabyte)