I went to an AT&T store today to look at the 635. I was talking with a rep and happened to talk about NFC and I asked him about Tap and Pay. He said I needed a different SIM card (a grey colored one instead of the normal at&t blue and orange) for my L1520. He swapped my SIM out for one enabling a payment SIM. He proceeded to tell me I needed an app called ISIS. There is no such beast in the Windows App Store. We tried it anyway while buying a cover for my sons 635 that's being delivered to my house tomorrow. It didn't work. When I got home, I decided to chat wth AT&T support. They didn't have an answer except to try the PayPal app. I set it up and went to McDonalds. No dice. Does anyone have a clue? My phone is a 1520 with Nokia Cyan and Windows 8.1. Thanks in advance for any help.
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