Currently I am not having Mifi 2200 wifi device and I have installed the same on the Ford SUV which is I am having. It is having Ford Sync Nav/Satellite Radio package. Noticed an interesting thing that Siri is not able to understand the thing when I supposed to use the built in microphone with device. It did not make any difference in the situation. However I have found that after disabling the Sync with Siri seems to working fine. Let me know if you are having any idea on the same.