The most bizarre one is at a Subway I go to once in a while: they have signs all over saying they accept Android Pay, but when I go to use it the phone vibrates like it worked but the terminal replies "insert chip," or maybe it's "chip required." The cashiers claim it works for other people though. I tried it several times over a year just to see if it was a one-off error, but it always did the same.

I really like Android Pay/mobile payments when they work, the only problem is, I stopped really using it because the success rate is so low. The card readers seem like they aren't that strong, have difficulty sensing the phone, and when it does sense it there seems like a lot of weirdness/try agains. I tried to use it once at a vending machine and I just couldn't figure the thing out, the payment went through but when I selected something nothing happened. Credit card worked fine though.

It was so unimportant when I got a new phone I ended up getting one without NFC.

Oh, I'm pretty sure the “CHIP READER DISABLED” thing is just the merchant didn't set up their account with chip enabled, not any problem with the hardware itself.