Google maps on my phone (a Galaxy Note 5 ,nice big screen) works for me.
I can bluetooth music from it, run Dashcommand app, and Maps (and or the Garmin Nav app ) , all at the same time if i want , its great :-)
That said i still would not mind a nice double unit but , there
are other options now , i dont know what they are like in quality but here; a single Din unit with a plug in screen , 10.1 inches here ! Yikes somethin to brag about lol. it would look like a tesla in there :-)
https://www.ebay.com.au/itm/10-1Sing....c100507.m3226
Or a 1 din 7 inch plug in screen here:
https://www.ebay.com.au/itm/Joying-S...wAAOSwevdaDYCP