The edit option is not available for time in a Date Time field from a mobile project on the ArcGIS for Windows Mobile devices.
Last Published: March 30, 2018ArcGIS for Windows Mobile
Bug ID Number
March 26, 2015
June 11, 2020
ArcGIS for Windows Mobile
Will Not Be Addressed
The development team has considered the issue or request and concluded it will not be addressed. The issue's Additional Information section may contain further explanation.
On July 1, 2017 Esri retired the ArcGIS for Windows Mobile product and encourage the customers to migrate the mobile field editing projects to the Collector for ArcGIS app or another ArcGIS app available at http://www.esri.com/software/apps.