
Android Torque app and ELM327 Bluetooth
Almost all commonly available ELM327 bluetooth adapters use a Chinese clone of the ELM327 chip. The initial offering of the ELM327 from Elm was not protected; it’s firmware could be easily downloaded, so knockoffs quickly came about. They are much cheaper in quantity than the real ELM327. Finding an adapter with a real Elm Electronics chip is quite difficult, although I haven’t had trouble with the clone. Sometimes it will be reluctant to connect at first, but I suspect this has more to do with bluetooth than anything else.