Hi, I am Gabriele from italy. I am looking for an arduino gsm shield to send messages from arduino to my telephone. For example, i would like to send one sms to my telephone automatically with arduino when one button is pushed.
Online I can find several gsm shields, the official one and others compatibles.
Can someone tell me what differences I can find in the official one
With others, for example this one:
Thankyou everyone guys 