Yes: The Field iD App for mobile devices (Android and iOS) provides the ability to take either a Customer/Jobsite to an offline status or take an asset offline.
Offline Mode allows the user to perform an inspection or identify assets when there is no internet connection available.
The benefit of performing mobile tasks offline is that it provides a quicker response from the app, using Wi-Fi or Cellular Network requires a much stronger signal and the app must constantly update itself with data, possibly slowing down your task.
Looking to use Offline Mode? Read the How-To guide "Working Offline Instructions for the Field ID App"