Hi:
Could you please give me a screenshot ? This will allow me to understand your problem more intuitively . And I find a AT Command document <LINK_TEXT text=“https://seeeddoc.github.io/GPRS_Shield_ … _v1.11.pdf”>https://seeeddoc.github.io/GPRS_Shield_V2.0/res/AT_Commands_v1.11.pdf</LINK_TEXT> that may can help you.The AT+CMGL introdution is on page 102 .