arduino - CME 错误 :10 - Sim not inserted error in SIM800 GSM Module

Question

我在设置 AT+COPS=1 时得到 +CME ERROR: 10
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？

Answer 1

您需要检查您是否已经连接并注册到网络(CREG 状态)。为了更好地解释错误，请为详细错误发送 AT+CMEE=2。