>>2061712well ok if you really must have a car-dashboard-size moving map display with 7680x4320 resolution to run waze, then, maybe, a phone in your pocket with a 5g sim, slaved to a handlebar mount screencast device could do the trick, though even then, a dedicated device makes far more sense given the size and energy requirements of a head unit. so you're still not getting around the fact that a purpose-built tool is going to be better suited to this than any smart phone plus display mirroring solution ever could be
I can tell you that in 5+ years of owning the same fred hysteria "flexing on poors" head unit designed for actual bikes, I've needed to re-download maps exactly once, and that was when I took my head unit to another continent (I live in 'merica) and the thousands of square miles of local-to-me maps I downloaded on day 1 of fred hysteria weren't pre-saved. I am not sure why it occurred to me to do that before getting on the plane but I'm glad I did because imagine being in a backwards country like france or switzerland, where they don't have wifi or cell service yet, right? I mean everyone except me lives in mud huts and chucks spears at each other and has a penis gourd, MURICA #1 MAGA MAHA THEY HATE US CUZ THEY AINT US
but I suppose if you're some kind of superhuman ultra-distance cyclist who can cover thousands of miles a day without stopping *and* you have the short term planning skills of a russet potato, then the limited onboard memory only capable of storing new england, the mid-atlantic, plus some of the eastern midwest might present a problem because what if you reach your hotel that night and forget that you have moved 6 states over and you didn't expect to be there for some reason and on top of that you have no access to wireless data of any kind, what then? then people like me would really feel dumb huh