On Monday, September 25, 2017 at 3:40:46 PM UTC-6, Steve Koerner wrote:
Understood Tom. Yet, I'd say it would be easy for a ground observer to be confused on this point unless they sat uninterrupted for a considerable period of time monitoring you. I looked at the data from one of my flights a couple months ago here in Arizona. Even though the particular flight that I analyzed was high and never very far from Phoenix there were numerous long drop out intervals in which the data had been qued on my phone. Someone checking my flight on the ground would have to be looking at it critically with the same level of understanding of the operation that you and I have in order to discern this issue. Anyway, I'm not disparaging the tool. I think it's great.

On Monday, September 25, 2017 at 1:35:49 PM UTC-7, Tom Kelley #711 wrote:
On Monday, September 25, 2017 at 2:03:16 PM UTC-6, Steve Koerner wrote:
Tom: I think you may be misled in thinking that IGCDroid works everywhere. Whenever the program can't link up with a cell tower, the program ques the data on your phone instead. When it makes the next cell connection it transmits that missing data. The result is that you do end up with a full trace as long as you do eventually land someplace that has coverage; although the data won't always be real time. If you land somewhere remote that doesn't have coverage, you'll be out of luck -- nobody will know where you are from IGCDroid alone. That's when having your satellite transmitter is golden.

Steve I said "everywhere I have flown". Thanks and yes I am very aware of how it works. Yet wherever I have flown, the folks on the ground who say they have been watching, the trace has never been interrupted, so far.
Of course reviewing a cell phone coverage map might be an idea before you go wondering off into ya ya land. Yes, I agree, as if you land out in an area without cell phone coverage, your not in a good spot to begin with. That's why I agree it's best to carry another device to communicate with.

I think what is being shared are experiences that show its a great tool to use and appears to work good. Yet not all may experience the same results where they may use it.

Best. Tom #711.

Location of your cell phone while your flying?