Appreciate the assistant. will be back for more! Can I assume the then the external GPS overides the iphone gps as its better etc, but that the phone must be in connection to the external gps via bluetooth when in use, i.e keep it in my jacket pocket but have the external gps out on the bike so it c...

First and Foremost. Merry Christmas to all. I have just downloaded the Lap timer software and have been given a Dual GPS 150A. I have an Iphone 5S plus in the house we have a Go Pro Hero 2 and the new Hero 3. I apologise if this has been asked before, but I have no tech ability at all. I just want t...