Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6d7dc68 in __gconv () from /usr/lib/libc.so.6
(gdb) bt
#0  0x00007ffff6d7dc68 in __gconv () from /usr/lib/libc.so.6
#1  0x00007ffff6d7d209 in iconv () from /usr/lib/libc.so.6
#2  0x00007ffff7134255 in g_convert_with_iconv () from /usr/lib/libglib-2.0.so.0
#3  0x00007ffff7134498 in g_convert () from /usr/lib/libglib-2.0.so.0
#4  0x00007ffff7bc541a in _mbim_message_read_string_array
(self=self@entry=0x63ba40, array_size=<optimized out>,
relative_offset_array_start=relative_offset_array_start@entry=28) at
mbim-message.c:233
#5  0x00007ffff7bccc8c in
mbim_message_subscriber_ready_status_response_parse
(message=message@entry=0x63ba40,
ready_state=ready_state@entry=0x7fffffffe734,
subscriber_id=subscriber_id@entry=0x7fffffffe748,
    sim_icc_id=sim_icc_id@entry=0x7fffffffe750,
ready_info=ready_info@entry=0x7fffffffe738,
telephone_numbers_count=telephone_numbers_count@entry=0x7fffffffe73c,
telephone_numbers=telephone_numbers@entry=0x7fffffffe758,
    error=error@entry=0x7fffffffe740) at mbim-basic-connect.c:1211
#6  0x0000000000403e94 in query_subscriber_ready_status_ready
(device=0x640840, res=<optimized out>) at mbimcli-basic-connect.c:342
#7  0x00007ffff78caac7 in g_simple_async_result_complete () from
/usr/lib/libgio-2.0.so.0
#8  0x00007ffff78cab29 in ?? () from /usr/lib/libgio-2.0.so.0
#9  0x00007ffff714fe46 in g_main_context_dispatch () from
/usr/lib/libglib-2.0.so.0
#10 0x00007ffff7150198 in ?? () from /usr/lib/libglib-2.0.so.0
#11 0x00007ffff715059a in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#12 0x0000000000402c46 in main (argc=1, argv=0x7fffffffe9e8) at mbimcli.c:336


The culprit seems to be this response:

03:00:00:80:B4:00:00:00:02:00:00:00:01:00:00:00:00:00:00:00:A2:89:CC:33:BC:BB:8B:4F:B6:B0:13:3E:C2:AA:E6:DF:02:00:00:00:00:00:00:00:84:00:00:00:01:00:00:00:3C:00:00:00:1E:00:00:00:5C:00:00:00:28:00:00:00:00:00:00:00:01:00:00:00:24:00:00:00:16:00:00:00:31:00:38:00:31:00:33:00:39:00:39:00:32:00:33:00:35:00:38:00:35:00:00:00:33:00:31:00:30:00:34:00:31:00:30:00:34:00:36:00:39:00:31:00:31:00:30:00:37:00:36:00:31:00:00:00:38:00:39:00:30:00:31:00:34:00:31:00:30:00:34:00:32:00:35:00:34:00:36:00:39:00:31:00:31:00:30:00:37:00:36:00:31:00:32:00