@david-pinto From what I read at the NFC World website the Moto G doesn't have NFC, so therefore would not work with the ring. You should still check in the Settings if you have an option to turn NFC on under "Wireless & Networks" -> "More..." since I think there are a couple of versions of the model(at least one with and one without LTE radio).
"Motorola has confirmed to NFC World that its affordable Android smartphone, introduced in November 2013, does not have NFC" (http://www.nfcworld.com/nfc-phones-list/)
Yeah, the cover just adds distance which is why it can make the sweet spot harder to hit.
Thanks for the pictures, @SwordFire
For anyone who hasn't noticed, the ring is oriented so that the long side of the battery mounted antenna is aligned with the long side of the ring.
There are a few posts here concerning aftermarket NFC antennas, @jasok2 was modifying an Asus nfc reader and testing some of those antennas on it.
Basically any phone with a removable back plate with the NFC antenna mounted there will have accessible contacts, most Sony phones are that way though the waterproof ones are of course inaccessible unless you're willing to lose your waterproof rating.
Anything to do with aftermarket Qi is going to make NFC reception worse, not better.
Hi, can you help us out a little by explaining what works and what doesn't? Can you read the nfc ring with the oppo?
That is a huge nfc antenna so it leaves me curious about how well it will work with the ring.
@jasok2 the sweet spots are not indicative of multiple antennas, they're simply places on the one antenna where the RF field is strong enough to trigger a read of the ring. What they're talking about is multiple switched antennas which will give multiple read zones (potentially with multiple sweet spots).