AT+CMGR=1
+CMGR: 1,,78
0791246030500200110481643000007030427132500047D6B0BEECCE83F4E17558EF4EAFEB2CD09C5DD78BC3207519447E8FC3737719D44EB7DF20B8FC6D7FEB5D2062795D5797DB65903E0C82BFC7E837BCEC4EBB00
OK