We would like to allow our devices to be used on international transport.
Currently we are using AT+COPS=4,2,“PREFERRED OPERATOR”. Preferred operator is the one in the home country.
According to the AT Command Manual, AT+COPS=4 should have automatic fallback. However, this command is timing out every time. We tried anything between 3 and 10 minutes.
Is AT+COPS=4 broken?
How can we support connectivity on international transport? AT+COPS=0?