my 8830's gps works fine in bb maps, google maps. i run version 4.3. I know of 3 people running 4.5 and their gps does not work either. Telus could have tried to block the gps feature in the newer O.S
I have the telus 8330 and have never had any problems with the gps. I've used it with a couple third party applications and it works great with those as well.
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I tried what the post initially said, and yes once Telus Navigator was up and running, all other GPS stuff worked too (Google Maps being my preference). However, if I reset the phone or exited from Telus Navigator, it seemed to stop working again.
Here's what I did, and it seems to have worked so far:
-Sucked it up and bought a $3 one-day pass for Telus Navigator..
-Opened Telus Navigator
-Used Application Switcher to open Google Maps and verify that it was working, it was
-Without closing Telus Navigator, I used Application Switcher to get back to home page and go into Options and then Security Options and then Application Permissions, then setting Telus Navigator to DENY for all options
-Prompted to reset and did so...
-You will get an error message when you start up your phone from now on (probably Telus Navigator trying to turn off the GPS again) but now I can just go straight into Google Maps and it works fine with GPS