I've tried many times to use my GPS on Lufthansa and BA flights but never had any joy.

It is quite good HOLUX 236 and was working during whole flight on Piper and Cesna.

So I gave up trying- but next Friday I'm flying to Goa so I'd like to see where I am- and possibly will try one more time. It is night flight so GPS would be even more needed

Cheers
Chris