Is a data connection necessary for GPS navigation in Réunion with CoreESIM?

Indeed, a robust data connection via your CoreESIM is critical for effective GPS navigation throughout Réunion Island. The island's mountainous terrain and intricate road networks, including routes to volcanic areas or the famed Cirque de Salazie, necessitate real-time map updates. Applications like Google Maps or Waze rely on continuous data for traffic information, re-routing, and accurate positioning, ensuring smooth transit across the diverse landscapes of this French overseas department.