The AT + CREG? Always returns 0, 2, what reason be

CodePudding user response:

The AT + CEREG? Test whether note net successful instruction, every time reply 0, 2, please ask next everybody
or what reason?

CodePudding user response:

The current operator has not been registered, but currently is to search a new terminal operators registration,
See if the module does not support, the use of sim card

CodePudding user response:

No note net success, wait a minute

CodePudding user response:

I can't if signal