On my iPhone X, I just tried to double-click the side button, but the screen just turned on and off quickly. Kept trying, sane result. No Apple Pay popup. Then in the settings, I found that it’s actually an option, and mine was turned off. I turned it on and tried it, and it came up just fine. But then that introduced an annoying delay when turning the screen off, which I couldn’t stand. I am used to the instant off when I press the side button. So I turned the double-click option back off. So my question is... can I still use Apple Pay without the double-click? Like will it initiate if I put my phone near a reader, then I’ll just have to authenticate with FaceID? I’ve been using my Apple Watch for payments so I never use the phone. Never really tested it out.