Even though my Vivoactive 4 has its own built-in GPS, it would be a useful power-saving feature if I had the option to use my phone's GPS instead.
While I like my Vivoactive more in general than my previous Fitbit, this is one Fitbit feature that I miss. My Fitbit didn't originally have this ability, but it was added after purchase as a software upgrade. Battery life for activity recording was greatly improved.
Is this an option being considered for a future Vivoactive software update?