On a related subject, I have a Samsung Galaxy Tab 3 (7 inch) in my aircraft and have a couple of Air Nav programs loaded.
Problem is, on many occasions, the tablet, which has a built-in GPS, fails to pick up a signal. One recent flight, coming back over the Southern Alps, with solid cloud below and only the peaks poking through, it refused to work and I had to rely on a compass course (which actually put me right on track). After googling the problem, it seems that even though the tablet specs say GPS, A-GPS & Glonass ( the Soviet system) you just cant rely on it to always provide a signal when needed, and should really have a separate GPS receiver as well. The ideal one appears to be the Garmin with bluetooth, so no cord needed.
I would be interested to know if others have had the same problem. Apparently even the much-vaunted i-pad
can lose its signal at times, and other pilots I know locally have resorted to adding a separate GPS receiver. I of course have tried to do it on the cheap - hence the second-hand Tab 3.