You can react on losing the connection of your application/device in the Process Designer.
|onDeviceGoesOnline||Will be triggered when the device has established a connection to a network (Wi-Fi, Mobile)|
|onDeviceGoesOffline||Will be triggered when the device has lost the connection to a network ((Wi-Fi, Mobile)|
|The auto field type “Device” holds the current connection state – characteristic: online. How to create a new auto field, you can see here.|
|It can be used in every mapping and also in conditions.|