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Mine is not JB'd. Intermittent loss of signal when not navigating. Very good when navigating. I think it is a lot to expect a little phone to do. It is pretty good, but not perfect. I don't think one can expect it to perform as well as a standalone nav unit that has a better antenna and superior Sirf III chipset. But, perhaps the AT & T units work better?
Yes I expect more. I've had the Navigon on an AT&T iphone 4 that was JB and it worked without a single flaw. So it's either the 4.3.6 that's doing it or its specific to all Verizon iPhones. Some phone came shipped with 4.3.5 and I wonder if there was anyone who didn't update if they are having problems. Point being, its a real issue and I wish Apple, Verizon and perhaps Navigon could look into it.
