The owner can turn off location data for the SimpleMDM app on their phone and when you need to locate the device you can place it into Lost Mode from the SimpleMDM admin console. This may require that the device was issued through Apple's DEP service. If the sole purpose of using SimpleMDM on the owners device is to locate it in the event it is lost or stolen, they would be better served using an AppleID and Find My iPhone.
Jordan
The owner can turn off location data for the SimpleMDM app on their phone and when you need to locate the device you can place it into Lost Mode from the SimpleMDM admin console. This may require that the device was issued through Apple's DEP service. If the sole purpose of using SimpleMDM on the owners device is to locate it in the event it is lost or stolen, they would be better served using an AppleID and Find My iPhone.