I've used it in the mountains while on the ski slopes. It worked great! I didn't like how the update process worked. I would love to see in the future an app that allows you to connect to your devices to update them rather than doing things with the wifi or change the name of my phone. Thankfully, I have worked in IT for over 10 years so I felt confident when doing the upgrade. I worry others may not be as confident or understand of how the update process works.