I run a FTM-350, so I have the GPS and modem built-in to run on the background side. Some run a second radio for APRS, but I was having issues with it interfering with my main radio and needed some way to duplex them. It was easier just to sell both radios and replace them with one.
No help on the Android stuff, I run an old Nokia flip phone that doesn't seem to give a rat's rear what my ham radios are doing. I did interface an old Garmin Nuvi 350 to my radio. It displays received station positions as favorites and landmarks. Other stations pop up on the GPS map and I can use them as waypoint to navigate.
'91 Pickup - Imelda
'08 Tacoma TRD - Donna
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"Our task must be to free ourselves from this prison by widening our circle of compassion to embrace all living creatures and the whole of nature in its beauty. Nobody is able to achieve this completely, but the striving for such achievement is in itself a part of the liberation and a foundation for inner security. " --Albert Einstein