It's a part of iOS in that SMS' are a part. It's technically a part of GSM technology. https://en.wikipedia.org/wiki/Commercial_Mobile_Alert_System https://en.

It's a part of iOS in that SMS' are a part. It's technically a part of GSM technology. https://en.wikipedia.org/wiki/Commercial_Mobile_Alert_System https://en.wikipedia.org/wiki/Commercial_Mobile_Alert_System Pedant away!