I don't know if LP2Go will do this. I imagine not, since generating one requires fairly involved code talking to Google (etc.) maps. It could send one generated on GCS and stored as a file on the phone, but my wild guess is not.
I take my laptop when I do waypoint flights. I can change flight plans. I can watch where it is via GCS map and telemetry. I can watch a very nice synthesized 3D FPV view "PFD/ModelView (ArcGIS/ReadyMap)" (OsgEarth).
Maybe someone else can give a more definitive answer.