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Hello there! We understand your situation wanting to know how the LG OLED C4 (2024) differs from the LG OLED C1 (2021), and we’re here to break down the key upgrades: Picture Processor & Upscaling C1: α9 Gen 4 AI Processor 4K C4: α9 AI Processor 4K Gen 7, with enhanced AI Super Upscaling and Dynamic Tone Mapping Pro for more accurate color, contrast, and detail. Brightness & Color Volume C1: Standard OLED peak brightness (~750 nits). C4: Brightness Booster with over 1000 nits peak in HDR and 100% color volume, delivering punchier highlights and deeper color accuracy straight out of the box. Refresh Rate & Gaming Features C1: 120 Hz native refresh rate, VRR, ALLM, G‑Sync C4: 120 Hz native + support up to 144 Hz, improved Game Optimizer, FreeSync™, and Auto Low Latency Mode for a smoother gaming experience. Smart Platform & Connectivity C1: webOS 6.0, basic AI Sound Pro C4: webOS 24 with built‑in Matter, AI Concierge, Always Ready mode, Room‑to‑Room Share, and enhanced voice control via Magic Remote – plus USB Camera compatibility. Design & Mounting C1: VESA 400 × 200 mm C4: VESA 300 × 200 mm Both maintain the near‑bezel‑less OLED look, but the C4’s slimmer panel tech and updated stand design offer a slightly sleeker profile. Troubleshooting step: To ensure you’re experiencing all these improvements, make sure your C4’s firmware is up to date—go to Settings > All Settings > General > About This TV > Check for Updates before you dive into those new features. https://www.lg.com/us/tvs/lg-oled77c4pua-oled-4k-tv#pdp_specs If you’d like more details or need help with settings, please send us a private message on social media @LGUSSupport, and our team will be more than happy to explore further solutions. We appreciate your patience and hope this helps you choose the perfect OLED for your needs! —Renzo
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