Can I travel if my Android phone runs out of battery?

If your titles are stored in your phone's secure element or SIM card, many phone models allow you to validate even if the battery is empty.
If your tickets are stored in the My Navigo Tickets complementary application, it is necessary that your phone screen is turned on to validate a ticket, but the transport application does not need to be opened.

In the event of an inspection, if you have a Navigo Month or Navigo Week pass, you must be able to display your photo in the application (My Account) to present it to the inspector.