On the surface this sounds good until you realize that there is a pretty big group of people that started using iPads, etc. with boating navigation and charting app. Pilots too I think. Used to be you could tell when you had a location fix using a GPS, especially when I wifi was turned off. Now my iPad magically gets a location fix even when in airplane mode and I have no idea how or if I can trust it enough for something critical. This all started changing in iOS 8 or 9. Really wish Apple would expose more details to app developers on what type of fix an iDevice was using.