![LG 43UA73006LA 43-Inch 4K Ultra HD HDR Smart TV (webOS 25 Platform with AI Concierge, alpha 7 AI Processor 4K Gen8, Game Optimiser & ALLM, 60Hz) [Model 2025]](https://m.media-amazon.com/images/I/41UZuLgXZCL._SL160_.jpg)
Buying Guide
How to Buy a 43-inch 4K Smart TV
This short guide helps you choose a 43-inch 4K smart television for a small to medium room. It covers the main things to check, the types you will see, the technical features that matter, where to buy and common mistakes to avoid so you can act with confidence.
What to consider first
Screen size and viewing distance: a 43-inch set suits bedrooms, kitchens and small lounges; sit about 1.5 to 2.5 metres away for the best 4K experience.
Budget and value: these TVs commonly sit in the low to mid price band, roughly between £225 and £300 for current models. Expect basic 4K, smart platform access and modest audio in this range.
Room environment: check brightness and anti-reflective performance if the room is bright. For darker rooms prioritise deeper contrast.
Use case: decide whether you will mostly stream, watch broadcast TV, or play games. Gaming needs low input lag and features such as Auto Low Latency Mode.
Budget and value: these TVs commonly sit in the low to mid price band, roughly between £225 and £300 for current models. Expect basic 4K, smart platform access and modest audio in this range.
Room environment: check brightness and anti-reflective performance if the room is bright. For darker rooms prioritise deeper contrast.
Use case: decide whether you will mostly stream, watch broadcast TV, or play games. Gaming needs low input lag and features such as Auto Low Latency Mode.
Types you will encounter
- Standard LED 4K: common, affordable and energy efficient for general viewing.
- Quantum dot-enhanced 4K: brighter colours and higher colour volume for punchier HDR highlights.
- Smart platform variations: each maker uses its own smart TV software so app selection, interface speed and update policy vary.
- Gaming-focused variants: tuned for consoles with lower input lag and gaming menus that adjust picture automatically.
Key features and specifications to check
Panel and picture engine: look for 4K upscaling and a capable processor; these improve lower-resolution content.
HDR support: check for HDR10 and HLG at a minimum; Dolby Vision is a plus but not always available at this price.
Colour and brightness: quantum dot or similar technologies deliver more vivid colour and stronger peak brightness for HDR scenes.
Motion handling and refresh rate: most sets in this class are 60Hz; that is fine for TV and streaming but check for motion-smoothing options if you watch sport.
Sound: on-board speakers are often limited; consider a soundbar if you want clear dialogue and fuller sound. Look for Dolby Audio or equivalent processing.
Inputs and gaming features: ensure enough HDMI ports (3 is a good target), check for HDMI ARC or eARC for soundbars, and confirm support for ALLM or VRR if you play on a modern console.
Smart apps and voice control: confirm the platform offers the streaming apps you use and supports a voice assistant you prefer.
Mounting and physicals: check VESA mount size and whether the stand allows neat cable management.
Warranty and security: prefer models with clear warranty terms and ongoing software support.
HDR support: check for HDR10 and HLG at a minimum; Dolby Vision is a plus but not always available at this price.
Colour and brightness: quantum dot or similar technologies deliver more vivid colour and stronger peak brightness for HDR scenes.
Motion handling and refresh rate: most sets in this class are 60Hz; that is fine for TV and streaming but check for motion-smoothing options if you watch sport.
Sound: on-board speakers are often limited; consider a soundbar if you want clear dialogue and fuller sound. Look for Dolby Audio or equivalent processing.
Inputs and gaming features: ensure enough HDMI ports (3 is a good target), check for HDMI ARC or eARC for soundbars, and confirm support for ALLM or VRR if you play on a modern console.
Smart apps and voice control: confirm the platform offers the streaming apps you use and supports a voice assistant you prefer.
Mounting and physicals: check VESA mount size and whether the stand allows neat cable management.
Warranty and security: prefer models with clear warranty terms and ongoing software support.
Where to buy, mistakes to avoid and expert tips
Where to buy: buy online for best prices and wide choice, but visit a store if you want to judge picture and menus in person. Check delivery options, installation and returns before purchase.
Common mistakes to avoid:
Common mistakes to avoid:
- Not measuring the space or viewing distance.
- Assuming all 4K images look the same; upscaling and HDR handling vary widely.
- Ignoring ports and audio connections, leaving you short of HDMI inputs or without ARC for a soundbar.
- Buying solely on price and neglecting the smart platform and update policy.
- If you watch lots of streamed movies choose a set with good HDR handling and higher brightness.
- If you game, prioritize low input lag and ALLM even if the screen is 60Hz.
- Plan for a soundbar to fix weak built-in audio; ensure eARC or ARC compatibility.
- Keep purchases to retailers offering a sensible returns window and either free setup or easy returns for large items.
Final Thoughts
Choose a 43-inch 4K smart TV that matches your room size, viewing habits and budget. Prioritise a good processor and upscaling, check ports and gaming features if needed, and test the smart platform before you buy. If in doubt, compare two models side by side in-store or buy from a retailer with a flexible returns policy so you can be sure the set works in your home.
