Question:
How to track and locate the device on XenMobile

Answer:
XenMobile tracks all of the device's location after customers' send the locate request. It would report the last known location of the device when the GPS is on.
For more reference please refer the following article : https://docs.citrix.com/en-us/xenmobile/server/provision-devices/security-actions.html

Locate: Locates a device and reports the device location, including a map, on the Manage > Devices.page, under Device details > General.