When the  Roku TV remote app is not working, it’s almost always Wi-Fi discovery, permissions, or power-state weirdness. Use this streamlined playbook to get it working fast.

Start Here: 60-Second Triage

1. Make sure phone and Roku TV are on the same Wi-Fi SSID (not a guest network).

2. Toggle Airplane Mode on your phone for 10 seconds; reconnect to Wi-Fi.

3. Restart the TV: Settings → System → Power → System restart (or unplug 10–15s).

4. Reboot the router and wait a full 2 minutes after it comes back.

Understand the Failure (So You Aim Right)

• App can’t find the TV: local device discovery (multicast) is blocked.

• TV shows up but won’t connect: permissions or firewall rules.

• Connects but controls lag: Wi-Fi congestion, power saving, or app background limits.

Roku TV Settings That Matter

• Control by mobile apps: Settings → System → Advanced system settings → Control by mobile apps → Network access = Default or Permissive.

• Fast TV Start: Settings → System → Power → Fast TV Start = On (keeps the TV discoverable while “off”).

• Bandwidth Saver: Settings → Network → Bandwidth saver = Off if you notice idle disconnects.

iPhone & iPad Fixes

• iOS Settings → Roku → enable Local Network access.

• Enable Background App Refresh for Roku.

• Under your connected Wi-Fi (tap ⓘ): temporarily disable Low Data Mode and Private Wi-Fi Address.

• If still flaky: delete and reinstall the Roku app, then reboot the iPhone.

Android Fixes

• Battery optimization: Settings → Apps → Roku → Battery → set to Unrestricted (wording varies).

• Permissions: grant Nearby devices and (if requested) Location.

• Storage: clear Cache (and Storage if needed).

• Temporarily remove VPN/DNS apps and retest.

Router & Wi-Fi Checklist

• AP/Client Isolation (a.k.a. Wireless Isolation) = Off on your SSID.

• Avoid Guest SSIDs; they block peer-to-peer traffic.

• If you have separate 2.4 GHz / 5 GHz networks, put both phone and TV on the same band (2.4 GHz is often more reliable for discovery).

• On mesh, test near the same node and consider disabling band steering during troubleshooting.

• Try toggling IGMP Snooping / Multicast; some routers need it on for discovery to work.

• Keep router firmware updated and firewall mode not set to “High/Strict” for LAN-to-LAN.

Bypass Discovery: Connect by IP

1. On Roku TV: Settings → Network → About → note the IP address.

2. In the Roku app: Devices → ⋯ → Connect Manually → enter that IP.
   If this works, your issue is multicast/permissions—keep tuning router and phone settings above.

When the App Connects but Behaves Oddly

• Verify the correct device is selected in Devices.

• If audio is missing or stuck on the phone, toggle Private Listening off/on.

• Close big uploads (cloud backups, gaming updates); saturated upstream causes lag.

• Approve microphone/keyboard permissions for voice search and typing.

Special Network Scenarios

• New Wi-Fi or changed password: you must reconnect the Roku TV to Wi-Fi with a physical remote first; the app can’t help until the TV is online.

• No remote + Wi-Fi changed: create a phone hotspot named exactly like the old SSID/password so the TV auto-joins, then update network settings on the TV.

• Hotel/dorm captive portals: during setup choose I am at a hotel or dorm to complete sign-in, then use the app.

• Office/campus networks: many block device-to-device traffic; use a travel router or a shared hotspot.

Update Everything

• Roku OS: Settings → System → System update → Check now.

• Roku app: update via App Store/Google Play.

• Router firmware: old builds often break multicast discovery.

Quick Fault Map (What Your Test Results Mean)

• Works on a phone hotspot but not at home → your router/SSID is blocking discovery.

• Manual IP works but auto-find fails → multicast or permission problem.

• Neither works → re-verify same SSID, TV online, and VPN/firewall toggles.

Make It Bulletproof

• Leave Fast TV Start on for Roku TV.

• Reserve a DHCP IP for your TV in the router to make manual IP connects consistent.

• Keep all firmware/apps current, and avoid guest/isolation SSIDs for media devices.

Bottom Line

Most app failures come down to three things: devices on different networks, blocked discovery (isolation/VPN/permissions), or a sleeping TV. March through the steps above—especially Local Network (iOS) / Nearby devices (Android), Fast TV Start, AP Isolation off, and manual IP—and you’ll get your Roku TV remote app back in control.