I use to bring a handheld device with me to record my flights. The problem is that reception gets worse and worse as I move away from the window. Anyone here have an idea on how to strap the handheld device to the window so that it can have the best possible reception?

It seems like my GPS device doesn't work on B787s. I suspect it has to do with the windows as I don't have any issues on other airplanes including the Airbus A350. Anything that I can do to address this issue on the Dreamliner?

Thanks!