You have configured two devices to use NFC (Near Field Communication). You want to share contact information between the devices using NFC. However, one device is moved about a foot away, and NFC connectivity fails. What could be the problem?
1) The NFC feature is disabled on one of the devices
2) The NFC antennas on one of the devices are damaged
3) The devices are not compatible with each other's NFC technology
4) There is interference from other electronic devices