REFLECTOR: IPad

[Don Johnston]

Actually, ForeFlight will use WiFi location services. When I use ForeFlight
on the ground without a GPS but with WiFi enabled, it always knows my
location via the access point database mentioned previously.

Don Johnston

On Tue, Jun 18, 2013 at 2:24 PM, Dave Philipsen <velocity at davebiz.com>wrote:

> Apparently ForeFlight is programmed to only use the GPS for determining
> location.  You can experiment with this by turning on "airplane mode" and
> then forcing the wi-fi back on.  You'll find that ForeFlight will not
> attempt to display your location but Google Maps *will*.  I suppose that
> this is because Google Maps is content to use the rougher approximation of
> wi-fi only whereas the ForeFlight programmers decided to only utilize the
> most accurate method.
>
> Another experiment you can do is to turn wi-fi and cellular data off
> without forcing "airplane mode". This will allow only the GPS to be used
> for determining location.  You'll find that ForeFlight will be perfectly
> fine in that situation.  And, it's probably the best way to use ForeFlight
> while you're flying. There will be less drain on the battery if that
> concerns you since both the cell radio and the wi-fi radio are turned off
> leaving the GPS turned on.
>
> Sent from my iPad
>
> On Jun 18, 2013, at 10:18 AM, Howard Woodruff <hgwoodruff at me.com> wrote:
>
> > So following this thread it seems to me that your real question is...
> Shouldn't Foreflight work Even on my WIFI only iPad. The best way to solve
> that mystery would be to take your iPad flying, crank up Foreflight, and
> see if you get a moving map with your airplane symbol, GND speed readout,
> ect. . I've been using Foreflight for about 3years with my iPad (3G) and I
> know that if I have the unit in "airplane mode" (cell towers off),
> Foreflight will not work even if I have WIFI turned on. The same switch
> that controls cell tower operation (the airplane mode switch) also turns on
> and off the internal GPS unit. fWIW
> >
> > Howard Woodruff
> >
> > Sent from my iPad
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