If you do, it may be preventing the file transfer. Disable your firewall, and get your friend to do the same - then try the transfer. If it works, you'll need to configure the firewall settings so that you don't have to disable it in future.
Nokia 8 vs Galaxy S8
Best new design books 2017: From vintage infographics to the the psychology of type
iMac 21.5-inch (2017) review
Nokia 8 : design, caractéristiques techniques, date de sortie