Bluetooth Status for 2020

There is a great deal of confusion regarding the use of Bluetooth, control boards and HMI via Android and iPhone. My wish is to have one point in the community for up to date status regarding bluetooth HMI to ControlBoard communication with, of course, internet connectivity to verify account. This verification would be tagged by year to prevent previous comments/suggestions from diluting the facts as they have been establish for that point in time. It would be nice if Blynk would update its Documentation section to address this in detail enough to do something with Android and possible iPhone iOS.

Therefore, this thread should pertain to BlueTooth/Blynk as Blynk understands it to be for the year 2020.

I’ll start off by asking the community were we stand with this technology?