ask technicial support hi guys, for your case, OBD ELM327 pairs but won't connect may because of your wrong operation, so i suggest you ask the OBD ELM327 technicial support for the solution. if you dont have a technicial support, you can ask technicial support at this obd2 store, they will always give you the best answer. url is : ???? iPhone ipad iPod??WIFI ELM327 ??OBD2 ???????, hope my answer help you.