+CMS ERROR: 350 when sending SMS in Quectel EC20
Question
Testing Quectel EC20 GPRS module. Basic AT commands worked, HTTP worked but when testing SMS, after sending AT+CMGS="MOB NUMBER", returns with +CMS ERROR: 350. What is the cause of this error?
1 answers
solution1
0 2021-04-15 20:46:26
Is it because of.network failure. change the SIM or try with new port
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