AT Commands - How to Send SMS to all numbers in the SIM card

Projects Programming
1

How can I send sms to all numbers stored on the SIM card modem Siemens MC35i?
I sending a single text message with the command:

Serial.println("AT+CMGS=\"number\"");

but nowhere can I find how to send sms to all on the SIM card.?
I found a website where they show how you can send sms to multiple numbers but what if append another number to the SIM card? SMS Tutorial: Sending SMS Messages from a Computer/PC Using AT Commands (AT+CMGS, AT+CMSS)

AT+CMSS=3,"91234567"
AT+CMSS=3,"97777777"
AT+CMSS=3,"96666666"
...
2

I don't know whether it's possible to specify the SIM entry(s) as the destination for an SMS, but you ought to be able to use AT extended commands to read the SIM phone entries and then send your SIM to each listed number:

3

I do not know if well understood. I do not want to save messages on a SIM only send a predetermined message in code to numbers that are included in your SIM card. Like this:

  Serial.println("AT+CMGF=1"); 
  Serial.println("AT+CMGS=\"number\""); // all numbers from SIM not only one
  Serial.println("Message from Arduino.");
  Serial.println("\x1A");
  Serial.println("AT+CMSS=1");
4

wojciech_69:
send a predetermined message in code to numbers that are included in your SIM card.

Yes, that is what I understood.