Quectel m25, QIACT returning ERROR

QIACT is returning an ERROR. what might be the cause?

There are a number of reasons:

  1. If you have done QIACT, you can execute “AT+QIDEACT” to close the network and then QIACT

  2. If the network status is abnormal, "AT+CERG? "Query the network registration status

  3. If the signal is abnormal, run AT+CSQ to query the signal value