BC260Y模组，用的移动NB卡，卡应该没有问题，但是一直不能注册网络，请问是什么原因
[2023-11-13_15:43:38:083]RDY
[2023-11-13_15:43:38:228]
[2023-11-13_15:43:38:228]+CFUN: 1
[2023-11-13_15:43:38:504]
[2023-11-13_15:43:38:504]+CPIN: READY
[2023-11-13_15:43:38:504]+CEREG: 2
[2023-11-13_15:43:53:978]AT+CIMI
[2023-11-13_15:43:53:978]460081661603967
[2023-11-13_15:43:53:978]OK
[2023-11-13_15:44:49:415]AT+QCCID
[2023-11-13_15:44:49:415]+QCCID: 898604961622C0093967
[2023-11-13_15:44:49:428]OK
[2023-11-13_15:45:13:541]AT+CFUN?
[2023-11-13_15:45:13:541]+CFUN: 1
[2023-11-13_15:45:13:541]OK
[2023-11-13_15:45:49:992]ATI
[2023-11-13_15:45:49:992]Quectel_Ltd
[2023-11-13_15:45:49:992]Quectel_BC260Y-CN
[2023-11-13_15:45:50:024]Revision: BC260YCNQAR01A01
[2023-11-13_15:45:50:040]OK
[2023-11-13_15:46:19:342]AT+CEREG?
[2023-11-13_15:46:19:342]+CEREG: 1,2
[2023-11-13_15:46:19:342]OK
[2023-11-13_15:46:24:426]AT+CEREG?
[2023-11-13_15:46:24:426]+CEREG: 1,2
[2023-11-13_15:46:24:426]OK
[2023-11-13_15:46:37:421]AT+CGATT
[2023-11-13_15:46:37:437]+CME ERROR: 4
[2023-11-13_15:46:42:835]AT+CGATT?
[2023-11-13_15:46:42:835]+CGATT: 0
[2023-11-13_15:46:42:835]OK
[2023-11-13_15:46:46:952]AT+CGATT?
[2023-11-13_15:46:46:952]+CGATT: 0
[2023-11-13_15:46:46:952]OK
[2023-11-13_15:46:49:615]AT+CGATT=1
[2023-11-13_15:47:29:637]+CME ERROR: 308
[2023-11-13_15:47:34:999]AT+CGATT?
[2023-11-13_15:47:34:999]+CGATT: 0
[2023-11-13_15:47:34:999]OK
[2023-11-13_15:47:38:974]
[2023-11-13_15:47:38:974]+CREG: 0
[2023-11-13_15:47:38:974]+CEREG: 0
[2023-11-13_15:47:38:974]+CREG: 2
[2023-11-13_15:47:38:990]+CEREG: 2