Hi. Got my car 2 guys ago and loving it. The bundled SIM card was working and picking up 3G on day 1, and now it intermittently connects, might show bars, never goes actually online, and is often in "reading SIM card' status. WiFi and Bluetooth work fine. I also cannot login to Live or the navigation pages. Is the SIM card or slot shot, or is this a broader connectivity issue? Have turned car on and off, reset card in slot, turned mobile data on and off, etc. Thanks.