I am using an old R&D version of the Nokia 6131 NFC. The device does not implement all the libs from SDK 1.0 (or it has been refactored).
Do you known when an update will be available using the menu Settings > Phone > Phone updates ?
com.philips.rf.MifareStdConnection > works on my phone
renamed in SDK 1.0 : com.nokia.nfc.nxp.mfstd.MFStandardConnection > ClassNotFound on my phone
Same for NFCIPConnection
My phone runs V 03.11