I\'ve been looking into ways to improve SEO for angularJS apps that are hosted on a CDN like Amazon S3 (i.e. simple storage with no backend). Most of the solutions out there
I've been looking for days to find a solution for this. As far as I know there isn't nice solution to the problem. I hope firebase will eventually enable user-agent redirects. If you have the money you could use MaxCDN enterprise. They offer Edge Rules which includes redirects by user agent .
https://www.maxcdn.com/features/rules/