Why does hitting GPS knock the watch out of Mountain Bike recording. When I did it, it lost a mile or more of my ride before I restarted in mountain bike mode. What a pain.

You can lock the buttons. Either through the Controls (Quick Actions) menu (long press the Light button), or set up a hotkey for the lock. Or just wear the watch a bit higher above the wrist, as Garmin recommends (to avoid pressing the button when you bend the wrist - if that was the case). I have Instinct since almost two years, but it happend only once to me (and am not using the button lock at all), so I'd tell it is matter of getting used to the watch.

Thanks.  Wearing bike gloves, I don't have quite the control that bare hands gives.  I'll just have to be careful.

tom10i said:

Wearing bike gloves,

Yes, I understand, I do wear them too But as I wrote it is just matter of getting used to it. How did you start activities on the Vivo? It does not have the same buttons? Using touchscreen?

Yea, it's all touchscreen.  And frankly, it can have similar issue, if you touch the screen while its working.  When running, I have failed to touch enough to get it going again after a pause and the result is similar.  It is not as solidly made as the Instinct which I will now use when mountain biking.  I don't fall that often, but when I do, it's nice to know the watch isn't gong to break very easily.  I always worried about the Vivo 3 as it isn't as durable.  Again, thanks.

I really would recommend enabling auto lock and setting a button combination for locking/unlocking. I've never had this issue since I did that.

That's something I'll surely do that if the problem occurs again.  Thanks, I hadn't thought of auto lock as it wasn't something you'd do with Vivoactive 3.