LG WEBOS & THINQ AI DOLBY VISION & ATMOS READY

How to Register Your LG Smart TV (webOS) at Amazon.com/mytv

By Marcus Vance, Senior Streaming Hardware Editor • Updated October 2026 • Hands-On Tested (Tizen, webOS, Roku OS & Fire OS)

Whether you own an LG OLED evo (C3, C4, G4, B4), QNED MiniLED, or UHD AI ThinQ television, activating Prime Video via amazon.com/mytv takes less than a minute. Follow these steps to retrieve your 6-character code on webOS, register your TV, and fix LG Content Store login issues.

Open Official Amazon.com/mytv 6-Digit Code Entry Guide → Browse Prime Video Movies ↓

Step-by-Step: Activating Prime Video on LG webOS TVs

  1. Open the LG webOS Home Launcher: Press the Home (House icon) button on your LG Magic Remote, or press the dedicated Prime Video shortcut key near the bottom of your remote.
  2. Download or Update via LG Content Store (Apps): If Prime Video is not installed, open the Apps (or LG Content Store) tile, search for Prime Video, and click Install.
  3. Generate Your 6-Character Activation Code: Launch Prime Video and select Sign In. A 6-character alphanumeric code (e.g., LW478N) and a QR code will appear on your LG TV screen.
  4. Visit Amazon.com/mytv on Your Phone or Computer: Open a browser on your smartphone, tablet, or laptop and go to https://www.amazon.com/mytv.
  5. Enter the Code & Confirm Registration: Log in to your Amazon account, type the 6-character code from your LG TV screen into the box, and click Register Device. Your LG TV will automatically load your Prime Video profiles.

LG Magic Remote Trick: Program a 1-Button "Quick Access" Shortcut

Even if your LG remote already has a Prime Video button, you can bind Prime Video to any number key (1–8): open Prime Video on your LG TV, then press and hold a number key (e.g., 2) for 3 seconds until a confirmation prompt appears to save it to LG Quick Access.

Fixing LG webOS "Prime Video Won't Load" or Expired Code Loops

If your LG Smart TV spins indefinitely on the Prime Video splash screen or rejects valid codes at amazon.com/mytv, apply these three webOS-specific fixes:

  • Disable LG Quick Start+ Briefly: LG's Quick Start+ feature keeps webOS apps suspended in memory rather than closing them cleanly. Go to Settings → All Settings → General → System → Additional Settings → Quick Start+, toggle it Off, restart the TV, and relaunch Prime Video.
  • Match LG Broadcast & Services Country: If your LG Service Country (under Settings → General → System → Location) is set to a different country than your Amazon account marketplace, the registration token may fail with Error 5004.
  • Accept Updated LG User Agreements: After major webOS firmware updates, streaming apps cannot connect to authentication servers until you accept the updated terms under Settings → Support → Privacy & Terms → User Agreements.