I am using Collector 10.2.2 for Android and have recently learned how to edit vertices in a line feature by dragging the vertex where you want it (hard to be precise). I was wondering if a vertex can be moved by entering x/y coordinates or current gps location? If so, how is that done? I have also heard mention of a "reshape feature" tool, but I can't find it. What is the "reshape feature" tool?
The collector app doesn't have reshape tool. You can just edit a feature by moving or deleting the vertices. You can use your current location by tapping on the "my location" icon(attached in this post).
Glad that helped! If you go to http://doc.arcgis.com/en/collector/ there are tabs of help near the top of the page (below the Collector name). The help is targeted to what you are doing: creating maps, or collecting data. Please let me know what issues you were hitting when looking for help with this app. Thanks!