Smart TV Wi-Fi Keeps Dropping – Real Fix

Quick answer

Disable Wi-Fi power saving mode in your TV's service menu. On Samsung TVs (2020 or newer), press Mute → 1 → 1 → 9 → Enter on the remote while the TV is on. Go to System → Wi-Fi Power Save set to Off. Reboot.

Why your TV keeps dropping Wi-Fi

Smart TVs run a stripped-down Linux kernel. Manufacturers cut corners on network drivers. One common corner they cut: the Wi-Fi power-saving implementation. The TV's Wi-Fi chip enters a low-power state after a few seconds of inactivity—say, when you're just watching a scene with no buffering. The chip wakes up too slowly when data arrives again. The connection times out. You see the dreaded spinning circle or “Network disconnected” message.

Router resets and channel changes help sometimes, but they're treating a symptom, not the cause. The real cause is the TV's own network stack being too aggressive about saving power. The fix is to force the Wi-Fi chip to stay awake.

Fix steps

Check your TV brand and year. This works on Samsung (2020+), LG (2021+ WebOS 6.0+), and some Sony Android TVs. For older or off-brands, skip to alternative fixes.
Enter the service menu. For Samsung: with the TV on, press Mute → 1 → 1 → 9 → Enter on the remote. For WebOS: press Settings → scroll to General → System → Service Menu (requires a service remote or an app like LG Service Menu). For Sony: go to Settings → Device Preferences → About → Build tap 7 times to unlock developer options, then Developer options → Wi-Fi power save mode set to Off.
Locate the Wi-Fi power save toggle. On Samsung: navigate to System → Wi-Fi Power Save. On LG: Power Save → Wi-Fi Power Save. Set it to Off.
Reboot the TV. Unplug it for 30 seconds, then plug back in. A reboot applies the change.
Test. Stream a 4K video for 20 minutes. If it doesn't drop, you're done. If it drops, repeat the steps—some TVs revert the setting after a firmware update.

Alternative fixes if the service menu doesn't work

Switch to 2.4 GHz only. 5 GHz has shorter range and worse wall penetration. Your TV's Wi-Fi radio is weaker than a laptop's. Go to your router's admin panel and create a separate 2.4 GHz SSID (or disable 5 GHz temporarily). Connect the TV to that.
Change the Wi-Fi channel. 2.4 GHz channels 1, 6, and 11 are non-overlapping. If your neighbors are on channel 6, move to 1 or 11. Use a Wi-Fi analyzer app like WiFi Analyzer (Android) or NetSpot (Mac) to find the least crowded channel.
Disable IPv6 on the TV. Go to Network → Expert Settings → IPv6 set to Off. Some routers handle IPv6 poorly with smart TVs, causing intermittent drops.
Assign a static IP. DHCP lease times can cause a brief disconnect when the lease renews. Set a static IP in the TV's network settings using your router's subnet (e.g., 192.168.1.50).

Prevention tip

After you disable power saving, every firmware update can reset it. Set a monthly calendar reminder to check the service menu setting. Or better: connect the TV via ethernet if your router is close enough. Ethernet eliminates Wi-Fi drivers entirely—no power save, no channel interference, no dropped packets. It's boring, but it works forever.

One more thing: if you have a 2022+ Samsung or LG TV and the Wi-Fi still drops after these steps, you might have the Mediatek MT7921 chipset. It has a known Linux driver bug. No service menu setting helps—you'll need a USB Wi-Fi adapter (try the Asus USB-AC56) plugged into the TV's USB port, then switch the TV's network to that adapter. It's a hack, but it's the only fix for that chipset.