To my knowledge it is 30 days if you are asking how long before the data is dumped from the database. How many times the device checks in (and whatever interval you have the device check in set at or if it changes locations more than xx amount of change...etc), that is up to you. We do not collect GPS information for Employee Owned devices, only corporate owned. I run an audit once every 90 days to make sure that people have not enrolled incorrectly as corporate owned.