Apple Pay has significantly increased its European presence and has now launched in France (previously, it was available in UK and Switzerland).
It supports Visa and MasterCards (credit and debit) from four banks - Banque Populaire, Carrefour Banque, Caisse d'EpargenTicket Restaurant. Orange and Boom will be added soon.
The mobile payment service works on iPhones (6 and later, SE included) and the Apple Watch. iPads (Pro, Air 2, mini 4) are supported too, but only for in-app payments (i.e. not in stores). You can pay in the following stores:
Apple Pay is coming to Spain soon (where it will clash with Samsung Pay).
Apple Pay works with any store that accepts contactless payments these stores are just a few examples
The retailer has to accept Apple Pay. Not the other way around.