Several days ago Nikon released the new firmware updates for Nikon D5600 and D3400 to address the Snapbridge issues with iOS 10.2. And according to the email response from Nikon tech support, Nikon will release a new firmware update for Nikon D500 to address the Snapbridge issues with iOS version 10 and above:
Yes, a new firmware update for the D500 is in the works and should be released by the end of March to address the connection issues users were having with iOS versions 10 and above. We have the new, updated version of Snapbridge to address the issue as well.
Great news for all Nikon D500 users.
Read more: Best Lenses for Nikon D500.