I am using the nRF Connect for Visual Studio add-in with the PineTime DevKit0 board. I make changes to the CONFIG_BT_DEVICE_NAME in the prj.conf but do not see the name change on my central (iPhone). I have seen it change in samples after a number of configuration changes (again, sometimes it does not), but on this particular project there were a number of prj.conf changes which did not change the device name.
I read this post but it did not seem to offer a resolution aside from making a bunch of changes to the prj.conf.