Why isn't Chromecast icon showing in Chromecast browser on Android phone?

[AC Question]

I have an Android phone 4.42 (SPHL710) I downloaded and installed the Google chromecast app, to stream movies from my Chrome browser on my phone. However, the Chromecast icon is not showing up in the upper right corner...like it does on the browser on my desktop computer. Help!

 

[B. Diddy]

Welcome to Android Central! The Chrome browser actually doesn't have its own Chromecast button. You'd have to use the Cast Screen option in the Quick Settings, if it's available. Unfortunately, I don't think the S3 supports this function: https://support.google.com/chromecast/answer/6059461?hl=en