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Fix a TV that has a phone that will not display

We'll check input, adapter, cable, and phone settings—or tell you when to call a technician.

Troubleshooting · Home electronics
5–15 min
What you'll need
  • Phone adapter (USB-C, Lightning, or micro USB to HDMI)
  • HDMI cable
  • TV remote
Step 1 of 7

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Choose the option that matches what you see. You can jump straight to that section.

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Steps

Goal: Confirm the symptom, check input and adapter, then rule out phone settings and cable issues.

  • Confirm the phone is connected via adapter but the TV shows no picture.
  • Good: You have confirmed the symptom. Proceed to Check input and adapter.
  • Bad: Phone displays sometimes—may be loose connection or phone settings.

Check input and adapter

Goal: Confirm the correct HDMI input is selected and the adapter is firmly connected.

  • Use the TV remote to select the HDMI input that matches where the adapter is plugged in.
  • Confirm the adapter is firmly plugged into the phone and the HDMI cable is firmly plugged into the TV. Reseat both ends.
  • Good: Correct input selected and adapter is snug. The signal appears. Done.
  • Bad: Still no signal—proceed to Check phone settings.

Check phone settings

Goal: Rule out phone output or screen mirroring being off.

  • Wake the phone and keep the screen on. Check Settings > Display or Connections for HDMI output or screen mirroring. Enable if off.
  • Good: Output is enabled. The phone screen appears on the TV. Done.
  • Bad: Still no signal—proceed to Check cable and power-cycle.

Check cable and power-cycle

Goal: Rule out faulty cable and reset HDMI handshake.

  • Try a known-good HDMI cable. Try a different adapter or HDMI port on the TV.
  • Unplug the TV and the adapter. Wait 30 seconds. Plug the TV back in, then reconnect the adapter and phone.
  • Good: Power-cycle or new cable fixes it. The signal appears. Done.
  • Bad: Still no signal—call a technician.

When to get help

Call a TV repair technician if:

  • You have checked input, adapter, cable, and phone settings with a known-good adapter and cable and the TV still shows no picture on any HDMI port.

Verification

  • The TV shows the phone screen on the correct HDMI input.
  • The adapter is firmly connected at both ends.
  • The phone is awake and HDMI output is enabled.
  • The signal is stable with no flickering.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Input and adapter Select correct HDMI input; confirm adapter is firmly connected.
  2. Phone settings Wake phone; enable HDMI output or screen mirroring.
  3. Cable and port Try different HDMI cable, adapter, or TV port.
  4. Power-cycle Unplug TV and adapter; wait 30 seconds; reconnect.
  5. Call a pro TV shows no picture on any port after all checks.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Phone model
  • Adapter type (USB-C, Lightning, micro USB)
  • TV model
  • Steps already tried

Is the correct HDMI input selected?

Wrong input shows no signal.

Use the TV remote. Select the HDMI input where the adapter is plugged in (HDMI 1, HDMI 2, etc.). Correct input: check adapter. Wrong input: select correct one, then test.

Yes No

You can change your answer later.

Select correct input

Select the HDMI input that matches your adapter. Confirm the adapter is firmly connected. If signal appears, done. If not, check phone settings and cable.

Done

Is the adapter firmly connected at both ends?

Phone and TV ends must be snug.

Check adapter at phone and HDMI at TV. Reseat both. Connected: check phone settings. Loose: reseat, then test.

Yes No

You can change your answer later.

Reseat adapter and test

Reseat adapter at phone and HDMI at TV. Wake phone. If signal appears, done. If not, check phone settings and try different cable.

Done

Is the phone awake and HDMI output enabled?

Some phones need output enabled in Settings.

Wake phone. Check Settings > Display or Connections for HDMI or screen mirroring. Enable if off. Enabled: try different cable or power-cycle. Not enabled: enable, then test.

Yes No

You can change your answer later.

Enable output and test

Enable HDMI output or screen mirroring in phone settings. Reconnect adapter. If signal appears, done. If not, try different cable or power-cycle.

Done

Try different cable or power-cycle

Try a known-good HDMI cable. Try a different adapter or TV port. Power-cycle: unplug TV and adapter for 30 seconds, reconnect. If signal appears, done. If not, call a technician.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a phone not display on the TV?
Wrong input selected, loose adapter or cable, phone screen mirroring or HDMI output off, incompatible adapter, or a faulty cable. Some phones need specific adapters.
Can I fix phone that will not display on TV myself?
Yes. Check input, adapter connections, and phone settings. Try a different cable or adapter. Power-cycle the TV and reconnect.
When should I call a technician for phone that will not display?
If you have checked input, adapter, cable, and phone settings with a known-good adapter and cable and the TV still shows no picture on any input. The TV HDMI port may need repair.

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