LG OLED evo M3 77-inch review

Real-time 4K 120Hz over the air from a Zero Connect Box, which still needs power and a place to live.

The verdict: Seventy seven inches of OLED evo with the a9 AI Processor Gen6 and Brightness Booster Max, and a Zero Connect Box that transmits real-time 4K 120Hz video and audio wirelessly so the only cable at the television is power. Buy it if the television is going somewhere a cable run would be ugly or impossible. The box is the caveat: it needs mains power, a shelf and a reasonable line of sight to the panel, so you have moved the cable problem rather than removed it.

Best Wireless TV

LG 77-Inch Class OLED evo M3 Series 4K Smart TV with Zero Connect Box

~$2,800

A 77-inch OLED evo television with the a9 AI Processor Gen6, Brightness Booster Max, Dolby Vision and wireless 4K 120Hz connectivity.

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Specifications

Spec	Detail
Panel	OLED evo, 77-inch class
Processor	a9 AI Processor Gen6, optimised for LG OLED
Brightness	Brightness Booster Max, adapting images
Wireless	Zero Connect Box transmitting real-time video and audio at up to 4K 120Hz
Platform	webOS 23 with Quick Cards and the Magic Remote
HDR	Dolby Vision, plus Dolby Atmos
Connections	Devices connect to the Zero Connect Box rather than to the panel

Specifications above come from LG's published product information. Treat pricing as approximate, since Amazon pricing moves.

What it does well

The wireless connection is genuinely useful in specific situations: a television over a fireplace, on a wall where a cable chase is impossible, or a room where the media devices belong in a cabinet across the room.
One cable at the panel is a real aesthetic difference, and it is the reason this product exists.
Four K 120Hz wirelessly means it does not compromise on the specification consoles and PCs need, which earlier wireless solutions did.
Seventy seven inches of OLED at this price is competitive on its own before the wireless feature is counted.
OLED evo with Brightness Booster Max addresses the standing OLED criticism, which is peak brightness against a bright room.

Where it falls short

The Zero Connect Box is a box. It needs a mains socket, a shelf and a sensible position relative to the panel, so what you have done is move the cables from behind the television to behind the box.
Wireless transmission at this bandwidth wants a reasonable line of sight. Placing the box inside a closed metal cabinet or behind a wall is where problems appear.
A wireless link is another thing that can fail or need a firmware update, in a chain that a HDMI cable does not have.
OLED image retention from static content remains a characteristic to think about if the television spends its life on one channel or one game HUD.
Seventy seven inches is a lot of television. Measure your wall and your viewing distance, because a panel too large for the room is the most common expensive mistake.

What owners report

Owner reports on LG's wireless OLED models are enthusiastic about the cable-free installation and consistent in noting that the Zero Connect Box needs thought about placement. Nobody reports the picture being compromised by the wireless link, which was the obvious worry when the technology launched.

Our OLED versus mini LED comparison covers the panel decision and our QD-OLED versus WOLED comparison covers the OLED subtypes, which is where LG and Sony's premium panels differ.

Test it on arrival with our TV screen test and read our smart TV testing guide for the checks worth doing while the return window is open. Our viewing distance calculator will tell you whether 77 inches suits your room before it arrives.

Who it suits

Wall mounts where a cable run is impossible or unattractive.
Rooms where the media devices need to live somewhere other than under the television.
Anyone who wants 77 inches of OLED and values the installation being clean.

Who should skip it

Installations where a cable run is easy, since the wireless feature is most of the price premium.
Closed metal cabinets or through-wall placements for the box.
Rooms too small for 77 inches, which is more common than people admit.

Alternatives worth considering

Better Colour Volume

Sony 65 Inch BRAVIA 8 II QD OLED 4K HDR Smart Google TV

~$3,298

A QD-OLED panel at 65 inches with higher colour volume at brightness than white OLED. Smaller and more expensive, with Sony's processing and both AirPlay 2 and Google Cast.

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For Daylight

Sony 65 Inch BRAVIA 9 Mini LED QLED 4K HDR Smart Google TV

~$2,660

Mini LED with X-Anti Reflection and X-Wide Angle for bright rooms. No OLED blacks and no image retention concern at all, which for a television used as a monitor or with static content matters.

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Bigger Than Any TV

Hisense L9Q Ultra Short Throw Triple Laser Projector, 4K UHD, 5,000 Lumens

~$4,998

Up to 200 inches from a cabinet against the wall in a lit room. Far less contrast and sharpness than an OLED, and a picture size no television reaches.

Check price on Amazon

Common questions

How does a wireless TV actually work?

A separate Zero Connect Box takes all your HDMI sources and transmits video and audio wirelessly to the panel at up to 4K 120Hz. The television needs only a power cable. The box needs power, a shelf and a reasonable line of sight to the panel, so cables still exist; they are just somewhere else.

Is there a lag or quality loss over the wireless link?

Owner reports do not describe picture quality being compromised, and it supports 4K at 120Hz, which is what consoles and gaming PCs need. The practical issues people encounter are placement issues: obstructions and enclosed cabinets, rather than the link itself being inadequate.

Is 77 inches too big?

It depends entirely on your seating distance and your wall. It is a large television, and the most common mistake at this size is buying by budget rather than by geometry. Run the viewing distance calculator with the actual position of your sofa before deciding between 65 and 77 inches.

Should I worry about OLED burn-in?

For varied viewing, modern OLED panels with their built-in mitigations are generally fine, and the risk case is thousands of hours of the same static element such as a channel logo or a permanent game HUD. If the set will be a computer monitor or spend its life on one game, a mini LED television removes the question.

What is OLED evo?

LG's designation for their brighter OLED panels, paired here with Brightness Booster Max processing. It addresses the standing criticism of OLED, which is peak brightness in a lit room, without changing the fundamental per-pixel light emission that gives OLED its black levels.

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This review draws on published specifications, manufacturer figures and the consensus of verified owner reviews. We have not tested this product ourselves, and we say so rather than implying otherwise. As an Amazon Associate we earn from qualifying purchases.