Will my CoreESIM internet function during a helicopter tour over Réunion?

When embarking on a helicopter tour in Réunion, your CoreESIM will provide network connectivity at the departure points, such as the heliports near Saint-Gilles or Pierrefonds. However, during the flight itself, especially at higher altitudes and over remote, mountainous regions like the Cirque de Mafate or the Piton de la Fournaise, cellular signal will predictably become intermittent or completely drop off. Aircraft flight paths are often outside the optimal range of ground-based cellular towers.