I was excited about receiving the ring, just as excited as a 8y old kid on his birthday while receiving his presents..... but the disappointment was big!
The ring just doesn't work with my D802. Entering a password on the keyboard like: P@SsW0Rd!*k@aj is easier than unlocking the screen with the nfc ring.
The 2 nfc-stickers provided with the ring work fine, but any other NFC sticker/NFC keychain works faster. I see a slight delay when i use the stickers provided with the ring, compared to other nfc stickers/tags.
I've tried every single millimeter on the d802 and IMO the sweet spot is 2CM underneath the volume-down button. Every tag gets registered there, but the ring takes about 5 seconds to be discovered.... and it also only works 1/10 times or so.
I don't got any cover or anything on the back.... so i guess the NFC in the d802 is weaker than other phones AND the ring also isn't as strong as any other nfc tag