Save the .apk file to your device's "Downloads" folder.
Connect to older smart TVs that lack modern app support. Download Cast apk
If you tell me what you are trying to cast to (like a Roku, Fire Stick, or older Smart TV), I can recommend the exact app version you need. Save the
Test upcoming streaming protocols before they hit the official store. or older Smart TV)
Open your file manager, tap the APK, and follow the prompts to install.