LTE - problem with scanning and change mobile operator

Hi all,
I am using a router :
RB912UAG-2HPnD
7.10.2
with a miniPCI LTE modem:
ME909s-120

I wanted to change the mobile operator but I have a problem.
When I try scan for other operators - in interface / lte (allow roaming is ON) / scan - I have an empty list

The SIM card I have supports roaming to other mobile operators
Am i doing something wrong?

exactly i have this problem on LHG LTE Kint :frowning: