in europe, you can use your phone to pay on all of the same machines that take cards. your phone just mimics being a physical card
also, in some countries, you can have your ID on your phone through government apps. i never need to carry anything other than my phone where i live
edit: also, just for the record, i want you to know that having your cards locked digitally in your phone is more secure than having a wireless card in your physical wallet
i am sorry if i sounded patronizing, i promise you that’s not even remotely what i intended. i was just trying to give you a non-american perspective in a neutral tone, but i must have failed that
i think you’re misunderstanding how cards on phones work in the EU. if the card reader that you’re interacting with accepts wireless cards, it will also accept your phone. i’ve never visited the US so i don’t know how it works over there, but here in europe, there are no “apple pay” or “google wallet” stickers/requirements on the terminals. it just shows a universal “wireless cards” symbol, which means that anything NFC will work