A remote app finds a TV only when both are on the same local network. Check in order: the phone is on Wi‑Fi, not mobile data; both use the same network name, not a guest network; VPN is off; the app has Local Network permission; the TV is awake. Then restart TV, phone and router.
- Check the network
- Turn off VPN
- Allow local network access
- Restart
1–3. The network
- Phone on Wi‑Fi. On mobile data the phone is not in your home network at all.
- Same network name. Many routers broadcast two names, such as Home and Home‑5G, or a separate guest network. Devices on a guest network cannot see each other. Put the phone on the network the TV uses; the TV shows its network under Settings › Network.
- Mesh and extenders are fine as long as they extend the same network. A travel router or a second router creating its own network is not.
4–6. The phone
- VPN off. A VPN sends the phone’s traffic away from the local network, and the TV becomes invisible. The same goes for iCloud Private Relay in some setups.
- Local Network permission (iPhone). Settings › Privacy & Security › Local Network: switch the app on. If you tapped “Don’t Allow” at first launch, this is the cause.
- Nearby devices permission (Android), if the app asked for it.
7–8. The TV
- Is the TV actually online? Open any streaming app on it. A TV that dropped off Wi‑Fi, or was reset, cannot be found by any app.
- TV-side settings. Roku: Settings › System › Advanced system settings › Control by mobile apps › Network access must not be Disabled. LG: LG Connect Apps on. Samsung: check Device Connection Manager and remove a stale entry for your phone.
A TV in deep standby also disappears from the network. Turn it on with its button first.
9. Restart everything, in this order
Unplug the TV for a full minute. Restart the router and wait until Wi‑Fi is back. Restart the phone. This clears stale addresses, which is what usually breaks a connection that “worked yesterday”.
When the remote and the app both stopped
If the plastic remote does nothing and the app cannot find the TV, suspect the TV: it has frozen or lost its network. Unplug it for a minute. If it comes back but stays offline, see connect a TV to Wi‑Fi without a remote.
Using a phone hotspot
If the TV is connected to your phone’s hotspot, that same phone often cannot see it. Run the remote app on a second phone or tablet connected to the hotspot.
