Is there any progress on investigating or resolving this ?
I too have a RUT950 with a contract data only SIM that connects to the LTE network but will just not, ever, make a data connection or yield a WAN IP address. Always "Network status - disconnected"
The same SIM and RUT950 will network connect over 3G to a femtocell and will establish a network and data connection so I believe the Router's config data for the mobile network is good.
I have tried various firmware versions including the RUT950 patch version RUT9XX_T_F0165_00.05.02.112_WEBUI.bin released on November 23rd 2018 but without ever getting an LTE data connection.
I don't have a PAYG data only SIM to try but propose to get one to test to isolate the SIM versus the Router.
Could there be a problem with or variability between the Quectel EC25 modems in different batches that would explain the one good, and one bad experience of EddZig?
The general problem, possibly with contract data only SIMs was first reported in November 2018 in the posts highlighted above by EddZig. Thanks