In the avalanche Site edition we have under Mobile Device Inventory the column Last Contact. How relaible is this date/timestamp. Is this really the last time the device has got connection with the Avalanche server (for getting status etc).
I would say it is very reliable. The time indicates the last / most recent time that the device checked into the Avalanche server to see if it needed any updates. A very old last contact date for a device is usually a strong indicator that a device is lost, hidden, or currently sent in for repair.