It appears that creating a feature service from ArcMap 10.6.1 that has symbology based on Quantities - Graduated Symbols with class ranges of Natural Breaks (Jenks) does not display in the Legend when viewing the web map in Collector. It does appear in the Legend in ArcGIS Online. I also tried to test displaying symbology in the Legend using the Beta app (Aurora/Collector app), but this also proved unsuccessful. Has anyone been able to successfully do this? Thanks.
As an edit template the class symbol renderer will not display, but with Aurora you can view the legend.
In the mapviewer you can also see the the Edit template only shows the symbol for 'other' in the Edit template.
Thanks for your response. Yes. I had already looked and noticed that the Aurora app shows the symbology in the Layers --> Legend. However, this takes 2-3 clicks to see the legend. The Aurora app and the Collector app both display the edit template for the class symbol renderer when using Categories --> Unique Values (See below):
However, neither the Aurora app and Collector app will display the edit template for the class symbol renderer when using Quantities -->Graduated Colors (seen below). This is a Bug in both apps, however the work-around in the Aurora App (as you said) is viewing it in the Layers --> Legend. The edit template in the Collector app does not have a work-around that allows the user to view the class symbol renderer in a legend. This has been logged with ESRI as a Bug.