Calling always reminds you to turn it off, but texting reminds you that it has been sent. Is this a call transfer?

Hello, your SMS prompt has been sent, which only shows that your SMS has been sent successfully, and it is not directly related to the call forwarding set by the other party.

Call to remind you that your phone is turned off. It may be that the other party's mobile phone is turned off or the incoming call is set to be transferred to other numbers that have been turned off. I suggest you try another time or contact the other party in other ways to check.