Quote Originally Posted by richard View Post
"AT+CMGS="+4179xxxxxxx",#10,"Hello Roger",#26
Actually, the working syntax in the Serial Communicator is: AT+CMGS="+4179xxxxxxx"#10"Hello Roger"#26

Thanks Richard for your help

BTW, one of the AT commands manual I could find in the WEB says:

Name: CmdAT.png Views: 5634 Size: 96.5 KB

Using the SIM800L GSM module, according to the "AT data sheet" () I should have used a CR after the phone number. But by chance, I discovered that only a LF would work. Is it a typo or something wrong with my module, I don't know; fact is CR = NO, LF = YES!!!!