Finally someone with my same problem. It's not even a setting, it's automatic. I can't keep switching between headphones and speakers, it's really annoying.
Thank you both for posting.
I can completely agree with you both that this an annoyance. This is intended behavior for mobile devices to automatically want to connect to previously paired Bluetooth devices in range, but an option to change this behavior is being explored.
Once we have more information, we will let the community know.
Joel - Community Support
See the topic here for a better understanding of what's going on.
This is a common "feature" introduced with a firmware update in February 2018. Has not been addressed in the update which came in May 2018.
For workarounds and reasons see the topic here: https://community.bose.com/t5/Portable/Soundlink-Revolve-Randomly-Turning-On/m-p/118174/highlight/tr...