I am using a "dongle" with the torque app (the 5 buck version) on my daughters Android phone. It reads codes that my code reader will not, this is all that most will need, very cool. Don't know if the dongle is an ELM 327, simple searching should figure that out. Seriously, this thing is great, keep the dongle in your glove box. Of course it will not read manufacturer specific codes, but gets all the generic ones.