Establish the casting technology
Use the correct sender and receiver pair. Google Cast and Apple AirPlay have different supported destinations and application controls. A general smart-TV label does not prove that either route is available.
Google and Apple instructions begin with suitable devices on the required shared local network. Confirm that first rather than changing a streaming-service password.
Check network reachability, not only the Wi-Fi name
A guest or isolated network can separate devices even when both receive internet service. Follow the router or venue’s supported network policy; do not try to bypass an administrator’s isolation controls.
If the network is shared with an organisation or accommodation provider, use its permitted connection options. A native application or an external device setup can be a different task, but it still needs authorised access.
Separate discovery from playback
If the receiver does not appear, collect device/network details. If it appears and connects but one source fails, collect application and media-stage details. The latter does not prove that discovery itself is broken.
Keep the sender app and destination constant during a test. Switching between mirroring, tab casting and native playback changes more than one part of the workflow.
Use a concise record
- Sender model and application.
- Receiver model and casting technology.
- The relevant local-network arrangement.
- Whether failure occurs before discovery, at connection or during playback.