我得到 +CME ERROR: 10 on setting AT+COPS=1 下面是我的终端 AT 命令输出：
AT
OK
AT+CSQ
+CSQ: 12,0
OK
AT+CMEE=1
OK
AT+COPS=?
+COPS: (2,"405800","405800","405800"),(1,"40505","40505","40505"),(????1,"AirTel","AirTel??",??"40410"),(1," IDEA CELLULAR Ltd","IDEA","40404"),,(0-4),(0-2)
OK
AT+COPS?
+COPS: 0
OK
AT+COPS=1
+CME
ERROR: 10
AT+COPS?
+COPS: 0
OK I have a IDEA sim
让我知道是什么问题。我正在使用大约 4 v 的电流。可以吗？