Yes, you are correct. Some parts of LTE and WCDMA use a pre shared secret and rolling keys to allow UEs to identify themselves to the mobile network. There are

Yes, you are correct. Some parts of LTE and WCDMA use a pre shared secret and rolling keys to allow UEs to identify themselves to the mobile network. There are however many non-data carrying parts of LTE that are not encrypted or authenticated, sort of how 802.11 has AES but management frames are still fully unecrypted.