The AT+MBFUN command will affect all AT+COMMAND commands. If the function codes are different, you need to use the AT+DATACUT command for one of the function codes.
The AT-MBFUN command affects all AT-COMMAND commands, and if the function code is different, you need to use the AT-DATACUT command for one of the function codes.
The at + mbfun command will affect all at + command commands. If the function codes are different, you need to use the at + datacut command for one of the function codes,<br>