I have the Otterbox Defender and have not had issues with the nfc phone to phone transfer. However, I found a pop machine that actually accepted isis payment with the nfc but I think the case is too much as it would not find it. I didn't feel like taking my case off to test the theory.
Well don't take this as 100% confirmation, but at least between two galaxy s3's with urban armor gear on bought nfc worked fine.
I'm not yet got urban armour gear to my s5 that's why I had only tried nfc with that case on my old s3.
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer? | Terms of Service