There is no built-in cellular modem. You must pair it with a smartphone for traffic and weather. If your phone dies, the Rider 600 becomes a "dumb" offline navigator (still functional, but no live data).
How does it stack up against the kings of the segment? new tomtom rider 600
While the "600" model name is commonly used in TomTom’s car navigation lines (like the older GO Supreme 6 There is no built-in cellular modem