For UK android TV users
So I messaged C4 about when all4 will come to android tv they replied:
"Thank you for your email regarding All 4.
We are sorry to read that you are experiencing issues accessing All4 content. As you have observed, we do not currently support the All4 app on Android TV, and we're afraid that we do not disclose our plans for launching All 4 on new platforms to the public in advance.
We are constantly reviewing our options regarding which devices to be on and aim to provide the best possible experience for viewers using our apps. However, All4 is currently available on various other platforms and devices such as: Sky, Virgin Media, via our website, iOS app, Android mobile app, Amazon Fire TV, Samsung Smart TV, YouView, Freeview Play, no/Now TV boxes, Chromecast, Playstation 4 and Xbox One.
Thank you for taking the time to contact All 4.
Kind regards, David Bremner
All 4 Support
Channel 4 takes no responsibility for third-party websites"
Ive seen a lot of complaining about this so lets do somthing about it as all4 is one of the best free apps in the uk.
So please write a polite enquiry at
https://www.channel4.com/4viewers/contact-us?intcmp=footer_contact
There is also a facebook
As far as I can tell you did not get anything apart from a confirmation of what you already know but they actually do tell us something new you can always cast from your phone or tablet.