T+ ticket are officially phased out right now, but for some reason still work. You can install their app to buy and use electronic tickets or a temporary card where you can store electronic ticket.
My wife has a Pixel and is with Bouygues and it works.
My son has a Xiaomi and is with Free and it works.
I live in SF and travel regularly to NYC and both of those just let me tap my phone and go. It honestly felt weird for the US to be ahead of a major European city in this way.
But you can use cards, ticket, or phone in any station.
The only thing you can’t use, which, in 2023 is pretty stupid, are payments cards (so neither Apple Pay and Google Pay). They even had a long fight with Apple for years to get full access to the NFC API instead of going with just payment cards.
Ironically, there are a lot of other cities in France that are compatible with payment cards, but not Paris.
I can imagine that it’s not the same scale to upgrade Paris ticketing vs the smaller cities but since they’ve done a major overhaul anyway …
Does this work on iPhone now?