Look at the CRUTCHFIELD website
They have every after market radio that will fit in your Ram
Many of them allow you to retain the steering wheel controls
They also have the options for Apple Car Play & or Android Auto, etc.
2016 Ram 3.0 diesel 3.55 w/LSD, G2 tonneau, Line-X, Weathertech mats, Mag-Hytec differential cover, Nfab bars, CB radio, EGR bug deflector