1)At first download this vpn from here
2)After download goto access poin setting and put
3)Now, make your main blance and data pack 0.
4)open the app and make handler setting like that
5)Now it conect and enjoy..
Limet 150 mb per day ... keep changing host to use more data
click here 2016 working free host..
NOTE: if not get conected goto accesspoin setting click on current apn setting > click proxy . don't write anything . just go back .. your internet conection will be disconect automaticaly. after few second vpn will be conect