Wi-Fi answers
Apple TV 4K — smart-home gadget keeps going offline
Why does my Apple TV 4K smart device keeps going offline?
The short answer
AirPlay doesn't appear on the iPhone, or drops out halfway through. On the WiFiXpert Compatibility Index the Apple TV 4K scores 88/100, and its weakest check is "Works on a guest network" — which is exactly where this problem comes from. AirPlay from your phone fails across a guest network.
We publish what breaks with each router and mesh system, and the setting that fixes it.
| Check | Verdict | Points |
|---|---|---|
| Works on 2.4 GHz | Supported | 12/14 |
| Works on 5 GHz | Excellent | 14/14 |
| Modern Wi-Fi security | Excellent | 12/12 |
| Happy on mesh Wi-Fi | Excellent | 15/16 |
| Works on a guest network | Poor | 3/8 |
| Survives a plug-in extender | Fine | 6/8 |
| Doesn't depend on chatty discovery | Significant dependency | 15/16 |
| Easy to fix when it goes wrong | Easy | 11/12 |
The short answer
- AirPlay doesn't appear on the iPhone, or drops out halfway through.
What our compatibility data shows
- Works on 2.4 GHz: Supported
- Works on 5 GHz: Excellent
- Modern Wi-Fi security: Excellent
- Happy on mesh Wi-Fi: Excellent
- Works on a guest network: Poor
- Survives a plug-in extender: Fine
- Doesn't depend on chatty discovery: Significant dependency
- Easy to fix when it goes wrong: Easy
Free fixes, in order
- Put the phone and the Apple TV on the same Wi-Fi name.
- Turn off any isolation setting on the router so the two can see each other.
- Plug the Apple TV into the router with a cable if one is within reach.
Before you spend anything
- Only if 4K streams buffer with a strong signal — then it's your broadband speed, not the box.
People also ask
- Does the Apple TV 4K work on mesh Wi-Fi?
- Can I put the Apple TV 4K on a guest network?
- Does the Apple TV 4K need 2.4 GHz?
- Which router works best with the Apple TV 4K?
If you do end up spending money
Only after the free fixes. Nobody pays to appear here, and no shop link changes anything we say.
- Router or mesh known to suit this device
- A single wired connection to the device
Where this comes from
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