I have the app on my S7 phone, but I couldn't sign in (using my email address) because I had forgotten the password.
I rang Virgin, because the "forgot your password link" within the app is broken and doesn't work, and their staff member changed my password for me as I spoke to them, but I tried again today using this new password and I still cannot sign in to the app.
Cheers for getting back to me so soon on this, it's great to see you've been able to get in.
The S7 is something that we're looking into and whilst I'm unable to provide you with a timeframe, it's certainly something we've already got our eye on and working to bring more devices to TV Anywhere in the future.
Please stay in touch if there are any questions you may have let me know