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GSM900A and Arduino uno programimg? Answered


I'm using arduino uno and gsm900a for sending sms and making call upto 10 numbers, i'm not able to send for all ten numbers one or three numbers only received,others?

Please answer. thank you/.



Best option is single action instead of trying it in bulk.
Could also be a matter of spam prevention.

IIRC, the internal memory of GSM modules is rather limited. Have you enough to receive the messages you are expecting ?