the guides at the cat operation i recently went to near fernie asked us to leave our cell phones in the cat or put them in airplane mode while we rode. they told us the newer smartphones in the last few years have been known to interfere with beacon signals, and these were recent year mammut pulse barryvox beacons we were using.
better safe than sorry
"People say that marijuana smoking is going to get in the way of my career. I say to them that on the contrary, my fighting career is getting in the way of my marijuana smoking." -Nick Diaz