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Using Arduino => Networking, Protocols, and Devices => Topic started by: dannyrfish on Mar 21, 2017, 09:46 am

Title: SIM800l PAYG issues
Post by: dannyrfish on Mar 21, 2017, 09:46 am
I am using a SIM800L connected to an arduino mini.  I have attached some sensors and when sensors go high I get an SMS message.  When I use a PAYG Vodafone SIM in the sim800l, with credit, it does not send any SMS messages.  When I use a contract Vodafone the messages are sent without an issue.  When I insert the payg sim into a phone I receive configuration messages for mms sending.  Could the configuration message stop the sim800l sending an SMS?

If I use the command at+ cmgd=1,4 would that help solve it ?