How to read a Navigo pass with my mobile phone?
Reading a Navigo pass with your mobile is usually pretty straightforward, but the best way to place the Navigo pass vary depending on your mobile phone model. It’s important to understand what the best place on your mobile phone is.
On most Android phones, the Navigo pass has to be placed on the back of the phone, some models require it to place it on the screen (e.g. Sony Xperia X).
Note that the orientation and placement of the card can affect reading quality:
On iPhones, click on “Read my pass” and place your Navigo pass on the top of the screen of your iPhone:
Once you hear the vibration, your pass is detected and ready to be reloaded: reading and writing are in progress, so don't move your pass and wait for confirmation from the application before removing it.