Sorry if this has been asked before but the forum won't let me search for "nfc" as the term is too short. As I understand it, the NFC hardware in the S4 is actually in the battery. How can I tell whether my S4/battery is NFC capable? I do have the NFC option under "Connect and share" in settings and this is turned on. Does that definitely mean it is NFC capable? On a related note, if I wanted to test NFC on my phone, is there anywhere I might find an NFC tag around the house? I'd be interesting in playing with NFC but I don't want to waste money buying tags if my phone won't do anything with them.