Of course, it is possible.
You can even play 4k videos on an android phone.
But if your question is, if you'll be able to view a 4k clip in its full quality on an android phone, then my answer would be no if it does not supports 4k videos.
All you need is one of the IPTV app installed on your device, and you will be good to go. If you ask me to install a Playbox HD cause it is one of the best IPTV apps i have ever used.