Having some issues with the GPS losing lock on satellites to update a position. It gets a position and pretty easily loses it.

Like Kurt, I’m finding the GPS to be unpredictable. I’m unable to predict when it might work or figure out how to orient it for greatest reliability; it’s basically fluke if I can position it so that it can achieve a lock.

Sitting in a cup holder that’s mounted quite high on the dash of my car, next to the centre vents, I can have 12 satellites on an overcast day and no signal on a completely clear day. Sometimes, when walking around the house, I’ll take it out of my jacket pocket to find that it has a lock with anywhere up to about five satellites but sitting on a counter in the kitchen, with the front facing outside, it has no lock – although standing on the kitchen table, a few metres from the counter and facing into the house, it will often lock on to 3-4 satellites.
A similar situation occurred just now when I was doing the grocery shopping. A few minutes after entering the store I took it out of my jacket pocket and saw that it had four of five satellites; I sat it in the bottom of the trolley (metal tubes with wire baskets in Australia) sitting on its back and it lost sync. It’s highly unlikely that that the trolley was behaving as a Faraday cage, since the wire spacing is quite large – about half the width of the D (when standing) and about the same depth.