send-sms.py
import serial
ser = serial.Serial('/dev/ttyUSB2', 115200, timeout=1)
ser.write("ATZ\r");
ser.write("AT+CMGF=1\r");
ser.write('AT+CMGS="+66818XXXXXX"\r');
ser.write("Hello World\r");
ser.write(chr(26))
lines = ser.readlines()
print (lines)
ser.close()