Quote Originally Posted by aratti View Post
Yes all phones behave in this way. Try to send a sms to your phone (switched off). You will receive it when your phone will be switched on again.

You can learn more at this link:http://communication.howstuffworks.com/sms.htm

Al.
Yes, this is true.
But my guess was another.
Suppose the following scenario:
-I've a mobile phone connected to the PIC
- I wish to send an SMS from that phone
- now suppose that there is not enough rf power to send it.
It is not better to check first if the RF is enough before attempt to send the SMS?

You are talking about to send an SMS to a switched-off mobile. Of course it work because the SMS is sended to your carrier from yuor phone that have enough rf strenght in the moment it is sending the message. Then is your carrier that take care to deliver to the recipient phone as soon it is reachable.
As you can see, I'm talking about a different setup.

Regards.