AppleTV 4K run tvOS 26 turn off when iPhone calls not picked up

This behavior is unusual and is likely tied to the Continuity and iCloud integration features between your iPhone and Apple TV, causing a system conflict when handling call states.

Here are a few steps to isolate and fix the issue:

• Check Call Notifications on Apple TV: Go to Settings > AirPlay and HomePod on your Apple TV. Ensure that notifications for nearby devices or specific users are configured correctly. You can try toggling these notifications off and on again.
• Review iPhone Continuity Settings: On your iPhone, go to Settings > Apps > Phone > Calls on Other Devices. Check if your Apple TV is triggered by this, and try temporarily disabling this feature to see if the Apple TV stops shutting down when a call is missed.
• Restart and Re-sync: Restart both your iPhone and Apple TV 4K. Sometimes a simple reboot forces iCloud to re-sync the device states and clears up erroneous sleep commands triggered by network drops during a call.
• Check HDMI-CEC / Bravia Sync Settings: If your Apple TV is turning off your entire TV setup, a miscommunicated signal via HDMI-CEC could be sending a "sleep" command. Try toggling Control TVs and Receivers off and on under Settings > Remotes and Devices on your Apple TV.

As the Apple TV box has no microphone, you wouldn’t be able to pick up a call through this device anyway.

You are advised to keep your phone nearby to be able to answer incoming calls.