I am living in Ethiopia and just bought the MR6400 and brought it with me from Germany.
Since some time I am trying to make the modem run with my data SIM card which is working fine in my Huawei dongle. When I put the SIM card into the modem it does not get a signal and the WAN connection fails.
The modem works if I use the SIM card from my phone.
Any idea what I can do?
Let me know if you need further details...
Thank you in advance!