Hey first of all thanks for sharing. I had try this code( first part/ first method) but i did not work due Errno 16. it says Device or resource busy. i want to send sms alert as a part of my school project. Also in my project i use the same dongle to upload some data to a website using sakis3g script. cann't i send the sms and use sakis 3g script at the same time? thanks in advance