UPDATE #2 - weBoost support sent me a new unit to test, and also sent me the optional cup holder mount. I tested the unit again, with MUCH better results this time. You can see from the attached screenshots from my iPhone 6 that the weBoost increased signal strength significantly. The iPhone was sitting in the weBoost in the cup holder on my center console. I took a screenshot before plugging the unit in, and after about 10 seconds of the unit being on with a green status indicator. My phone went from 17% to 45% signal strength according to the FieldTester app.