I try to recognize RFID tags with a Nokia 6112. I have absolutely no problem with the tags Mifare 1k, but the Nokia does not seem to see the tags Mifare Ultralight.
I have a tool allowing me to write into the tag memory so I wrote it :
00 in locks (page 2) to have the read/write authorisation.
e1 10 06 00 in CC (page 3) to declare it works with NDEF data
and differents kind of NDEF message (page 4 ...) (empty NDEF 0300FE or NDEF message copied from Mifare 1k).
And the Nokia does not seem to see the tag, either in reading neither in writing.
Any Idea ??