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LG 55-inch 4K Nano Smart LED TV (55NU870BPLA) Review

A well-rounded 55-inch 4K smart TV offering vibrant visuals, intelligent upscaling, and intuitive webOS 26 AI features for everyday living room viewing

Reviewed by Geetansh Arora Updated 2 Oct 2026 AI-assisted, editor-reviewed
LG 55-inch 4K Nano Smart LED TV

Our verdict

Is LG 55-inch 4K Nano Smart LED TV worth buying?

The LG 55NU870BPLA is a 55-inch 4K Ultra HD Smart LED TV powered by the advanced α7 AI Processor 4K Gen9. Built for mainstream home entertainment, it combines 4K Super Upscaling, Dynamic Tone Mapping, and HDR10 support with down-firing 20W stereo speakers enhanced by AI Sound Pro and Dolby Atmos. Running on webOS 26, the television integrates smart AI services including AI Voice ID, AI Concierge, and AI Search powered by Microsoft Copilot and Gemini. Gamers get standard ALLM and eARC over 3 HDMI ports with a native 60Hz refresh rate

Pros

  • Powered by the intelligent α7 AI Processor 4K Gen9 with 4K Super Upscaling
  • Updated webOS 26 platform with AI Concierge and built-in AI Search tools
  • Rich audio support with Dolby Atmos, WOW Orchestra, and AI Sound Pro virtual up-mixing
  • Wide 178-degree viewing angle with Direct Backlight and Dynamic Tone Mapping

Cons

  • Native refresh rate is limited to 60Hz
  • Offers only a single USB 2.0 port for external media

Key specifications

What you get

Size
55 inches
Resolution
4K Ultra HD (3,840 x 2,160)
Display
4K UHD
Smart TV Features
webOS 26
Sound
AI Sound Pro (Virtual 9.1.2 Up-mix)
Connectivity
3 HDMI (supports eARC, ALLM) Ports connect set top box, Blu Ray players, gaming console
Release Year
2026
Color
Black

Visual Performance & Processing

The TV features a 55-inch 4K Ultra HD direct-lit panel driven by the α7 AI Processor 4K Gen9. It leverages Dynamic Tone Mapping, AI HDR Remastering, and Precision HDR Master Pro to refine clarity and color depth across HDR10 and HLG content. Standard definition and HD video benefit from 4K Super Upscaling, while Filmmaker Mode ensures faithful cinema reproduction

Smart Features & webOS Platform

Operating on webOS 26, the interface provides swift navigation and personalized profiles with My Page Home. It introduces generative search features integrating MS Copilot and Gemini, complemented by AI Voice ID, AI Concierge, and Google Cast support for versatile wireless streaming and device connectivity

Audio Output & Sound Enhancement

Equipped with a 20W down-firing 2.0-channel speaker setup, the TV utilizes AI Sound Pro for a virtual 9.1.2-channel sound stage. Clear Voice Pro enhances dialogue clarity, while Dolby Atmos and LG WOW Orchestra integration allow seamless synchronization with compatible LG soundbars

Connectivity & Gaming Capabilities

The unit provides three HDMI inputs supporting Auto Low Latency Mode (ALLM) and eARC for audio receivers. Wireless connections include dual-band Wi-Fi 5 and Bluetooth 5.3. While native 60Hz panel speeds fit casual console gaming, it does not support 120Hz high-frame-rate inputs

Ideal for

  • Families seeking a reliable 55-inch 4K TV for streaming movies and TV shows
  • Smart home users wanting integrated webOS 26 AI search and voice controls
  • Casual console gamers who need ALLM and eARC connectivity

Consider another option if

  • Competitive gamers seeking native 120Hz or 144Hz high-refresh-rate panels
  • Users needing more than one USB port for local media accessories

Final recommendation

Yes

For shoppers looking for a modern 55-inch 4K smart TV, the LG 55NU870BPLA delivers a strong balance of picture enhancement via the α7 AI Gen9 processor, Dolby Atmos audio, and the latest webOS 26 ecosystem. It represents solid overall value for streaming, standard gaming, and daily television viewing

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