SMS unreadable

Am a newbie. Am using fxt 009 for sending sms. Am receiving the sms but its not the text i sent.
I used AT+CMGS=“mymobileno” upon receiving ‘>’ am sending the message with ctrl Z. but i received “?” with a square symbol.


What are you exactly sending in the message . Can you check what is the response received for “AT+CSMP?” and “AT+CSCS?”.