Involvement:Novice (still getting used to it) - Ownership:less than 1 day
when phone doesn't have signal, this seems to extend the antenna, outside the car in this case.
Kindly cheaply made, all plastic. Seems you can only use it placed directly in the cradle, not a problem if your using a bluetooth headset or something.
I tried blocking the iphone's signal with a piece of aluminum foil, getting me 0 bars, then I put it in the cradle, with the antenna high up in the room, I then put the aluminum foil completely around the phone in the cradle. And got 4 bars. So if there is a stronger signal through the cradle, it seems like the phone will know to go through it.
looking around, if I really want to boost the signal, say 20+ miles from a cell tower, I need to get a electronic signal booster, something powered, but this works fine for my need.
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