Can I travel if my iPhone runs out of battery?
If you run out of battery, some iPhone models allow you to continue validating for some time with your digital Navigo card, provided that Express Travel mode is activated on the card.
If you have a single digital Navigo card in your iPhone, Express Travel mode is activated by default on this card so that you can benefit from this power reserve in the event of a flat battery.
If you have several digital Navigo cards in your iPhone, the power reserve only applies to the digital Navigo card on which you have activated Express Travel mode (see question).
If your iPhone is switched off, you cannot validate with it.