Direct answer
A wrong result requires checking inputs, mode, calibration and output separately; a working control path can still be configured for the wrong state. For phone-to-TV screen mirroring, first place both devices on the primary network and test photo/screen mirroring outside a protected video app.
What this covers
- phone-to-TV screen mirroring with this exact failure state
- Diagnosis across protocol support versus Wi-Fi isolation and source app restrictions
- Customer-accessible observation, settings and external components
What it does not cover
- ×A displayed manufacturer error code with a different documented meaning
- ×Live electrical, sealed-system, internal battery-cell or gas repair
- ×A claim that every model exposes identical controls
Capture the exact failure state
ReversibleWrite down the selected mode, input conditions and the exact unexpected output. Expected behavior: discover the receiver and maintain a local peer or LAN session.
Isolate the component boundary
ReversiblePlace both devices on the primary network and test photo/screen mirroring outside a protected video app. Use a known reference input or manufacturer test and compare the result. Boundary to separate: protocol support versus Wi-Fi isolation and source app restrictions.
Correct only the proven cause
ReversibleEnable the matching AirPlay, Cast or Miracast receiver and remove guest isolation. Correct the setting, calibration or component proven by that comparison.
Verify and stop safely
ReversibleRepeat with the reference and a normal real-world case. Do not weaken router security or bypass protected-content restrictions.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check first when phone-to-TV screen mirroring has this problem?+
Place both devices on the primary network and test photo/screen mirroring outside a protected video app.
Why not factory-reset immediately?+
The useful boundary is protocol support versus Wi-Fi isolation and source app restrictions. A reset can erase state without proving which side failed.
When should I stop troubleshooting?+
do not weaken router security or bypass protected-content restrictions.
Answer for the exact device and software version shown above.