Explore the guide library · Apple device connections
Check app discovery permission before changing the TV, Wi-Fi password or whole router configuration.
A streaming application can play video on an iPhone yet show no television in its casting list. Internet playback and local-device discovery are separate operations. A denied Local Network permission is one possible explanation when the TV and phone are otherwise correctly connected.
Verify the intended target
Confirm that the television or streaming receiver supports the casting method used by the app. A generic smart-TV label does not mean every protocol is supported. Open the receiver’s relevant feature and check its connection state.
Review the app’s permission
Apple provides Local Network controls under Settings, Privacy & Security. Find the specific application. If it is a trusted app whose purpose requires discovering your receiver, allow that access and retry its normal casting workflow.
Understand the distinction from system services
Apple notes that an app denied local-network browsing can still use the internet or interact through certain system services. Therefore, one working system sharing feature does not prove that the app’s own discovery permission is enabled.
Check the network arrangement
- Confirm both devices use the intended home network.
- Check whether one device is on an isolated guest connection.
- Inspect an approved VPN’s local-network policy when relevant.
- Keep the receiver awake during discovery.
Test a small session
Select the correct receiver and start a short piece of content. Confirm that playback begins on the intended screen and that the phone can control it. A receiver appearing in a list is progress, but successful playback verifies more of the workflow.
If discovery still fails, follow the app and receiver manufacturers’ compatibility guidance. Do not grant every app local access or disable network isolation for the whole household. Review any permission again when the application is removed or no longer used for casting, keeping access tied to a clear practical purpose.
Sources and editorial notes
Sources checked 8–9 October 2026. Independent guidance and original illustrations; product comparisons use published specifications rather than hands-on benchmarks. Check the exact model, revision and regional documentation before changing settings.