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Why Your TV Remote App Keeps Disconnecting (and How to Fix It)

RemotApp Team Updated 2 min read
Short answer

Most disconnections come from three things: the phone closes the connection when it locks, the TV gets a new IP address from the router, or the TV turns its Wi-Fi off in standby. Allow Local Network access on iPhone, reserve a fixed IP for the TV in the router, enable network standby, and use an app that reconnects automatically.

“Disconnects all the time” is the most common complaint in reviews of TV remote apps. The frustrating part is that it’s rarely random: there are a handful of causes, and almost all of them can be fixed. Here they are, from most to least common.

1. The phone closes the connection when it locks

To save battery, iOS and Android suspend apps in the background and close their network sockets. When you unlock the phone, the old connection is dead. This isn’t something you can turn off, so the real fix is on the app side: it should reconnect the moment you open it again, before you tap a button. RemotApp was built around this: it reconnects as soon as you return to the app and resends the command if the first attempt hits a dead connection.

2. Local Network permission is off (iPhone)

Since iOS 14, apps need permission to talk to devices on your home network. If you tapped “Don’t Allow” by accident, the app can’t see the TV at all. Fix: Settings › Privacy & Security › Local Network, and turn the app on.

3. The TV got a new IP address

Routers hand out IP addresses that can change after a restart or power cut. If the app only remembers the old address, it loses the TV. Fixes:

  • Reserve a fixed IP for the TV in your router (DHCP reservation).
  • Use an app that identifies the TV by its unique ID and rediscovers it when the address changes.

4. The TV switches Wi-Fi off in standby

If the TV drops off the network when it’s off, the app can’t reach it to turn it on. Enable your brand’s network standby option: Samsung “Power On with Mobile”, LG “Mobile TV On”, Roku “Fast TV Start”. Details in how to turn on a TV without a remote.

5. Guest networks, isolation and VPNs

  • Guest Wi-Fi usually isolates devices from each other. Put both phone and TV on the main network.
  • AP/client isolation settings on some routers do the same on the main network. Turn them off.
  • VPNs on the phone can hide your home network. Disable it or allow local network access.

6. The TV forgot the permission

  • Samsung: if the TV keeps asking to “Allow” the device, go to Settings › General › External Device Manager › Device Connection Manager and set Access Notification to First Time Only.
  • LG: on some models, the “LG Connect Apps” option must stay enabled under the network settings.
  • Roku: keep “Control by mobile apps” enabled under Settings › System › Advanced system settings.

7. Aggressive battery saving (Android)

Some Android phones kill apps and Wi-Fi activity very aggressively. Set the remote app to “Unrestricted” in its battery settings.

8. Weak Wi-Fi at the TV

A TV at the edge of your Wi-Fi coverage drops packets, which feels like lag or disconnection. If you can, use Ethernet for the TV or add a mesh node nearby.

Checklist

  1. Same Wi-Fi network, not guest, no VPN.
  2. Local Network permission on (iPhone).
  3. Fixed IP for the TV in the router.
  4. Network standby enabled on the TV.
  5. An app that reconnects automatically.

Frequently asked questions

Why does my remote app disconnect when my phone locks?

iOS and Android pause apps in the background and close their network connections to save battery. That is normal. A good remote app reconnects instantly when you come back, so you don’t have to pick the TV again.

How do I give my TV a fixed IP address?

In your router’s admin page, look for “DHCP reservation”, “static lease” or “address reservation”, and assign a fixed IP to the TV’s MAC address. The TV keeps the same address after every restart.

Does a VPN affect TV remote apps?

It can. Many VPNs route all traffic away from your home network, so the phone can no longer see the TV. Disable the VPN or allow local network access in its settings.

RemotApp Team

The team behind RemotApp, a universal TV remote app for iPhone and Android. We test every fix on real Samsung, LG, Roku and Google TV sets before publishing. About us

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