Hello Keith, that sounds exactly like what I am observing.
I will have to buy a USB SIM reader and understand how pysim works. Thanks! Christoph Keith wrote on 26.08.25 at 11:39:
On 26/08/2025 11:29, Keith wrote:I can't remember off the top of my head what the LUJ cause code is that does this, but it is an issue.LU Reject Cause #2 "IMSI Unknown in HLR"See for example this description of the process (although this describes the problem in reverse): https://osmocom.org/projects/osmo-hlr/repository/osmo-hlr/ revisions/6b5616fd36f1d88d174a3610a1936b853e9d0981There's also a story of this happening at a CCC event one year where all the event's Osmocom SIMs got shut down by a local MNO network. Not sure if that is publicly documented somewhere. (it may be at least mentioned in some talk that was recorded.)BTW, You can add PLMNs to the FPLMN list with pysim, Again, not sure if there is a simple howto out there on that. Anybody?
smime.p7s
Description: Kryptografische S/MIME-Signatur
