I am using nRF52832 SDK 15.3 and type 4 tag and some phones like iPhone 11 and Samsung S20+ are not able to detect the tag. The tag works with other phones so I don't think it is a hardware problem. I don't see the NFC_T4T_EVENT_FIELD_ON event. I just see some NFC_T4T_EVENT_FIELD_OFF events. I am doing initialization like this:
nfc_t4t_setup(nfc_callback, NULL);
Do I need to modify any parameters when initializing?