The link is dead so for most Android phones I find them like this:
"Go to settings and turn on bluetooth. Click menu button and you will see the option Show received files . Alternatively every files sent via bluetooth will be stored in a folder named bluetooth in storage (if the files are not moved).Apr 17, 2014"
First hit with a google search https://www.google.com/search?q=where+are+android+bluetooth+received+files+stored
Routinely transfer images from one mobile phone to another. There is a 'grace period' when 'inbound transfers' allows one to launch the transmitted files. Have never been able to find the convention that allows one to find the Bluetooth transmitted files once notifications fade away and whether they are android version dependent. Guidance sought