In nightly build NFC works ok, But in BT APIv2 build Open Settings > enable NFC The NFC state is keeping transparent and can't be toggled. The status bar icon is not shown
Not sure how BT APIv2 build differs from regular master but this sounds similar to Bug 1143528 (which was caused by Bug 1109592). Thomas do you think this is a similar issue?
BTv2 is quite different from v1. So it might require additional changes to NFC. Did NFC on BTv2 work before (e.g., last week), or did you just test this for the first time?
Redirecting to Fred, since he's experiencing this issue. I don't have BTv2 build yet (not sure how to build it). Fred could you respond to Thomas question from comment 2?
Hi All, I have flashed full image from latest PVT build, then replace gecko with the patch enabling BTv2 based on master. NFC can be enable/disable through settings.  https://pvtbuilds.mozilla.org/pvt/mozilla.org/b2gotoro/nightly/mozilla-central-flame-kk-eng/2015/04/2015-04-12-16-02-03/
With jocelyn's latest PVT build and gecko with BTv2 patch, I can use NFC to share web url between devices.