Field Maps frequently prompts for data credentials when using a secured feature service with non embedded credentials.

[ejuser]

Having migrated from Collector Classic with the exact same workflow, we have encountered Field Maps  frequently prompting Android users to reenter their data credentials to view map content.

We are unable to embed the credentials because we require editor tracking. The passwords are complex creating work flow issues for field staff.

[ejuser]

Widespread issue on Android devices that appears to be impacting the security certificate when device comes in and out of cell coverage causing frustration with field workers.

[ejuser · Accepted solution]

This is a bug affecting Collector, Field Maps, and Explorer when an Android is in a rural area. 

BUG-000135548 When logging in to ArcGIS Collector or ArcGIS Field Maps (Android), an error message, "Untrusted Host" is returned.

This issue is fixed on the 21.2 version of the products. As Collector and Field Maps are on the 20.+ versions, you will have to wait until the next release cycle of updates. Unfortunately,  I do not have a time frame for the update cycles. 

[KyleGallagher16]

Having a similar credential-related issue with an iOS tablet in a metro area. This is happening upon submit but can't figure it out.

https://community.esri.com/t5/arcgis-field-maps-questions/credential-required-on-submit/m-p/1103264#...